Remove wheel tester.

Merge branch 'master' of github.com:jimahlstrom/quisk
Merge mouse wheel logic.
2026-10-27 17:05:25 -04:00 · 2026-10-27 16:58:05 -04:00 · 2026-10-27 16:56:09 -04:00 · 2026-10-27 16:49:51 -04:00 · 2026-10-24 13:45:22 +02:00 · 2026-10-22 16:13:49 -04:00
52 changed files with 2316 additions and 251 deletions
@@ -1,3 +1,27 @@
+Quisk Version 4.2.55  October 2026
+==================================
+Karl Heinz, K5KHK, provided a patche to fix the AC2YD remote control head. He provided another patch
+to fix Hamlib control when using WSJT-X improved. He added a mic jitter buffer to the remote control
+head so it works over WiFi. Thanks Karl!
+
+Quisk Version 4.2.54  August 2026
+=================================
+Quisk can now accept audio samples for Tx from TCI at rates 48000, 24000, 12000 and 8000. Please test.
+
+Quisk now includes program icons in the directory "quisk/icons". The Windows icon is quisk/icons/quisk.ico.
+On Windows, right-click the desktop icon and change the icon to <path-to-quisk>/quisk/icons/quisk.ico.
+The Linux icon is quisk/icons/quisk.svg. On Linux, change the quisk.desktop file to
+Icon=<path-to-quisk>/quisk/icons/quisk.svg.
+
+Quisk Version 4.2.53  June 2026
+===============================
+I added TCI support for Software Defined Connectors CW skimmer. Please test.
+
+This version of Quisk now works on Python 3.14 and higher. I changed to a new build system because
+the old one has been deprecated by Python. They no longer support running setup.py.
+The Linux version has a new makefile. The Windows version is installed by pip as usual.
+Please test.
+
 Quisk Version 4.2.52  May 2026
 ==============================
 This is a fix for various TCI bugs. Please test with WSJT-X and let me know if all problems are solved.
@@ -0,0 +1,12 @@
+# Quisk Software Defined Radio
+
+Quisk is a software defined radio transceiver that runs on a PC or on a single board computer such as a Raspberry Pi.
+It is written in Python and C.
+It works with various kinds of radio hardware such as SoftRock, Hermes Lite 2,
+the SDR-IQ by RfSpace, and with network UDP samples.
+Quisk is easily extensible by writing your own hardware file in Python.
+
+I wrote Quisk back in 2008, and I have been maintaining it ever since.
+For questions and support, please visit the group https://groups.io/g/n2adr-sdr.
+
+For more information see https://james.ahlstrom.name/quisk.
@@ -1,2 +1,2 @@
-#Quisk version 4.2.52
+#Quisk version 4.2.55
 from .quisk import main
@@ -9,6 +9,7 @@
 #include <Python.h>
 #include <complex.h>
 #include <math.h>
+#include <string.h>
 #include <sys/time.h>
 #include <time.h>
 #include <errno.h>
@@ -52,6 +53,41 @@ static int control_head_data_width;					// app.data_width of control head for gr
 static int packets_sent;
 static int packets_recd;

+///// The jitter buffer is thanks to Karl Heinz - K5KHK
+// Jitter buffer for the microphone samples received from the control head.  The network can hold
+// packets for 100 msec or more (Wi-Fi power saving and scanning) and then deliver them in a burst,
+// but the Hermes Tx buffer only has 50 msec of slack.  Without a buffer here, each late burst is an
+// underflow (a gap on the air) followed by an overflow (discarded samples).  So buffer mic_jb_target
+// frames before playing, and then release them at a steady MIC_JB_RATE.
+// The buffer adds its delay to the transmit audio, so it is off unless the configuration item
+// remote_radio_mic_jitter_ms is set.  When it is off, samples are passed on as they arrive.
+#define MIC_JB_RATE		8000	// frames per second sent by the control head
+#define MIC_JB_SIZE		8000	// ring buffer size in stereo frames
+#define MIC_JB_MAX_MS	500		// largest configurable delay; MIC_JB_SIZE must hold this plus MIC_JB_EXTRA
+#define MIC_JB_EXTRA	2000	// trim back to mic_jb_target above mic_jb_target + this (clock drift): 250 msec
+#define MIC_JB_IDLE		0.5		// seconds without packets that end a transmission
+
+static int16_t mic_jb[MIC_JB_SIZE * 2];
+static int mic_jb_target;	// frames to buffer before playing, from remote_radio_mic_jitter_ms; zero for off
+static int mic_jb_read, mic_jb_count, mic_jb_playing, mic_jb_starved;
+static int mic_jb_underruns, mic_jb_overruns;
+static double mic_jb_time, mic_jb_frac, mic_jb_last_packet;
+
+static void mic_jb_reset(void)
+{
+	int msec;
+
+	msec = QuiskGetConfigInt("remote_radio_mic_jitter_ms", 0);
+	if (msec < 0)
+		msec = 0;
+	else if (msec > MIC_JB_MAX_MS)
+		msec = MIC_JB_MAX_MS;
+	mic_jb_target = msec * MIC_JB_RATE / 1000;
+	mic_jb_read = mic_jb_count = mic_jb_playing = mic_jb_starved = 0;
+	mic_jb_underruns = mic_jb_overruns = 0;
+	mic_jb_frac = 0;
+}
+
 // Receive stereo 16-bit pcm radio speaker sound on the control head via UDP
 int read_remote_radio_sound_socket(complex double * cSamples)
 {
@@ -116,9 +152,9 @@ int read_remote_radio_sound_socket(complex double * cSamples)
 // Receive stereo 16-bit pcm microphone samples at the remote radio via UDP
 int read_remote_mic_sound_socket(complex double * cSamples)
 {
-	int i, bytes, nInt16, nSamples;
+	int i, j, bytes, nInt16, nSamples, nFrames;
 	int16_t buf[UDP_SEND_INT16];
-	double samp_r, samp_l;
+	double now, due;
 	struct timeval tm_wait;
 	fd_set fds;
 	static struct quisk_cHB45Filter HalfBand;
@@ -133,8 +169,8 @@ int read_remote_mic_sound_socket(complex double * cSamples)
 		quisk_filt_cInit(&cFiltInterp3, quiskAudio24p3Coefs, sizeof(quiskAudio24p3Coefs)/sizeof(double));
 	}

-	// read all available packets, one per loop
-	nSamples = 0;
+	// read all available packets into the jitter buffer, one per loop
+	now = QuiskTimeSec();
 	while (1) {
 		tm_wait.tv_sec = 0;
 		tm_wait.tv_usec = 0;
@@ -151,15 +187,71 @@ int read_remote_mic_sound_socket(complex double * cSamples)
 			break;
 		}
 		if (bytes > 0) {
+			if (mic_jb_starved) {	// the buffer ran dry; count it unless the transmission had ended
+				mic_jb_starved = 0;
+				if (now - mic_jb_last_packet < MIC_JB_IDLE)
+					mic_jb_underruns++;
+			}
+			mic_jb_last_packet = now;
 			nInt16 = bytes / 2;
-			for (i = 0; i < nInt16; i += 2) {
-				samp_r = buf[i];
-				samp_l = buf[i + 1];
-				cSamples[nSamples++] = (samp_r + I * samp_l) / CLIP16 * CLIP32;
+			for (i = 0; i + 1 < nInt16; i += 2) {
+				if (mic_jb_count >= MIC_JB_SIZE) {	// full: drop the oldest frame
+					mic_jb_read = (mic_jb_read + 1) % MIC_JB_SIZE;
+					mic_jb_count--;
+				}
+				j = (mic_jb_read + mic_jb_count) % MIC_JB_SIZE * 2;
+				mic_jb[j] = buf[i];
+				mic_jb[j + 1] = buf[i + 1];
+				mic_jb_count++;
 			}
 		}
 	} // while(1)

+	// release the frames that are due since the last call
+	nSamples = 0;
+	if (mic_jb_target == 0) {		// the jitter buffer is off: pass on everything received
+		nFrames = mic_jb_count;
+	}
+	else if ( ! mic_jb_playing) {
+		nFrames = 0;
+		if (mic_jb_count >= mic_jb_target) {
+			mic_jb_playing = 1;
+			mic_jb_time = now;
+			mic_jb_frac = 0;
+		}
+	}
+	else {
+		due = (now - mic_jb_time) * MIC_JB_RATE + mic_jb_frac;
+		if (due < 0)			// the clock was set back
+			due = 0;
+		else if (due > MIC_JB_RATE / 2)	// limit to 0.5 sec, well within SAMP_BUFFER_SIZE after interpolation
+			due = MIC_JB_RATE / 2;
+		mic_jb_time = now;
+		nFrames = (int)due;
+		mic_jb_frac = due - nFrames;
+		if (nFrames > mic_jb_count) {	// ran dry: play what is left, then buffer up again
+			nFrames = mic_jb_count;
+			mic_jb_playing = 0;
+			mic_jb_starved = 1;
+		}
+	}
+	for (i = 0; i < nFrames; i++) {
+		j = mic_jb_read * 2;
+		cSamples[nSamples++] = ((double)mic_jb[j] + I * (double)mic_jb[j + 1]) / CLIP16 * CLIP32;
+		mic_jb_read = (mic_jb_read + 1) % MIC_JB_SIZE;
+	}
+	mic_jb_count -= nFrames;
+	if (mic_jb_target && mic_jb_count > mic_jb_target + MIC_JB_EXTRA) {	// the control head's clock is faster than ours
+		i = mic_jb_count - mic_jb_target;
+		mic_jb_read = (mic_jb_read + i) % MIC_JB_SIZE;
+		mic_jb_count -= i;
+		mic_jb_overruns++;
+	}
+	if ((mic_jb_underruns || mic_jb_overruns) && now - mic_jb_last_packet > MIC_JB_IDLE) {
+		QuiskPrintf("Remote mic jitter buffer: %d underruns, %d overruns\n", mic_jb_underruns, mic_jb_overruns);
+		mic_jb_underruns = mic_jb_overruns = 0;
+	}
+
 	nSamples = quisk_cInterpolate(cSamples, nSamples, &cFiltInterp3, 3);
 	nSamples = quisk_cInterp2HB45(cSamples, nSamples, &HalfBand);

@@ -715,6 +807,7 @@ PyObject * quisk_start_remote_radio_remote_sound(PyObject * self, PyObject * arg

 	packets_sent = 0;
 	packets_recd = 0;
+	mic_jb_reset();

 	return Py_None;
 }
@@ -741,6 +834,7 @@ PyObject * quisk_stop_remote_radio_remote_sound(PyObject * self, PyObject * args
 	control_head_graph_socket_started = 0;
 	remote_radio_graph_socket_started = 0;
 	control_head_data_width = 0;
+	mic_jb_reset();

 	QuiskPrintf("total packets sent = %i, recd = %i\n", packets_sent, packets_recd);

@@ -190,10 +190,20 @@ class Remot:	# Remote comtrol base class
      return
    try:	# Read any data from the socket
      text = self.remote_ctl_connection.recv(1024)
-    except:
-      #traceback.print_exc()
+      # Thanks to Karl Heinz - K5KHK
+    except (BlockingIOError, InterruptedError, socket.timeout): # No data available now
+      return
+    except OSError: # For example ConnectionResetError: the Control Head is gone
+      print('Closing Remote Control connection: recv() failed')
+      self.RemoteCtlClose(False)
      return
    else:					# We got some characters
+      if not text: # recv() returns nothing only when the Control Head has closed the connection
+        # Close now rather than waiting for the heartbeat timeout: a Control Head that
+        # crashed or lost its network may have left the transmitter keyed.
+        print('Closing Remote Control connection: closed by Control Head')
+        self.RemoteCtlClose(False)
+        return
      if not isinstance(text, str):
        text = text.decode('utf-8')
      self.received += text
@@ -375,13 +385,22 @@ class Remot:	# Remote comtrol base class
          self.cw_next_keydown = None

  def StopTransmit(self):
-    # TODO:  Add code for modes other than CW
+    # PTT code added thanks to Karl Heinz - K5KHK
+    # Called whenever the remote session ends (RemoteCtlClose).  Release everything the
+    # Control Head may have keyed: the CW key and, for voice and digital modes, PTT.
+    # Without the PTT release, a Control Head that disappears while transmitting (a crash,
+    # a lost network, a dead battery) leaves the transmitter keyed until someone unkeys it
+    # at the radio.
    while len(self.cw_event_queue):
      self.cw_event_queue.popleft()
    self.cw_next_event_ts = None
    self.cw_next_keydown = None
    self.cw_key_down = 0
    QS.set_remote_cwkey(0)
+    ptt = getattr(self.app, 'pttButton', None)
+    if ptt and ptt.GetValue():
+      print('Remote Control connection closed while transmitting: releasing PTT')
+      ptt.SetValue(0, True) # Same as releasing PTT at the radio; runs OnButtonPTT

  def ProcessRadioBtn(self, command, cmd_text):
    # Large and Small format screens send different button events for radio buttons.
@@ -3,6 +3,7 @@
 #ifdef MS_WINDOWS
 #include <Winsock2.h>
 #include <windows.h>
+#include <string.h>
 #else
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -105,7 +106,7 @@ static PyObject * open_rx_udp(const char * ip, int port)
 	wVersionRequested = MAKEWORD(2, 2);
 	if (WSAStartup(wVersionRequested, &wsaData) != 0) {
 		sprintf(buf, "Failed to initialize Winsock (WSAStartup)");
-		return PyString_FromString(buf);
+		return PyUnicode_FromString(buf);
 	}
 #endif
 //	quisk_using_udp = 1;
@@ -127,10 +128,10 @@ static PyObject * open_rx_udp(const char * ip, int port)
 			shutdown(rx_udp_socket, QUISK_SHUT_BOTH);
 			close(rx_udp_socket);
 			rx_udp_socket = INVALID_SOCKET;
-			sprintf(buf, "Failed to connect to UDP %s port %u", ip, port);
+			snprintf(buf, sizeof(buf), "Failed to connect to UDP %s port %u", ip, port);
 		}
 		else {
-			sprintf(buf, "Capture from UDP %s port %u", ip, port);
+			snprintf(buf, sizeof(buf), "Capture from UDP %s port %u", ip, port);
 #if DEBUG_IO
 			if (getsockopt(rx_udp_socket, SOL_SOCKET, SO_RCVBUF, (char *)&intbuf, &bufsize) == 0)
 			{
@@ -145,7 +146,7 @@ static PyObject * open_rx_udp(const char * ip, int port)
 	else {
 		sprintf(buf, "Failed to open socket");
 	}
-	return PyString_FromString(buf);
+	return PyUnicode_FromString(buf);
 }

 static PyObject * close_rx_udp(PyObject * self, PyObject * args)
@@ -343,7 +344,7 @@ static PyObject * open_samples(PyObject * self, PyObject * args)
 	quisk_sample_source(NULL, NULL, &afedri_read_rx_udp);
 //////////////
 	return open_rx_udp(ip, port);		// AFEDRI specific
-//	return PyString_FromString(buf);		// return a string message
+//	return PyUnicode_FromString(buf);		// return a string message
 }

 // Miscellaneous functions needed by the SDR-IQ; called from the GUI thread as
@@ -1,7 +1,24 @@
+MODULE_NAME := afedrinet_io
+OBJDIR := ../build/local

-afedrinet2:
-	python2 setup.py build_ext --force --inplace
+CFLAGS			:= $(shell python3 ../makefil.py --cflags)
+LDFLAGS			:= $(shell python3 ../makefil.py --ldflags)
+EXTENSION_SUFFIX	:= $(shell python3 ../makefil.py --suffix)
+TARGET := $(MODULE_NAME)$(EXTENSION_SUFFIX)

-afedrinet3:
+# Default target: Link the shared library object
+$(TARGET): afedrinet_io.o $(OBJDIR)/import_quisk_api.o $(OBJDIR)/is_key_down.o
+	$(CC) -o $@ afedrinet_io.o $(LDFLAGS) $(OBJDIR)/import_quisk_api.o $(OBJDIR)/is_key_down.o
+
+# Compile the C source files into object files
+afedrinet_io.o: afedrinet_io.c ../quisk.h
+	$(CC) -o $@ -c $< $(CFLAGS) -I..
+
+.PHONY: clean
+clean:
+	-rm -f  *.o 
+	-rm -f  $(MODULE_NAME)*.so
+
+.PHONY: afedrinet-old
+afedrinet-old:
 	python3 setup.py build_ext --force --inplace
-
@@ -727,17 +727,6 @@ class Configuration:
        count -= 1
    return count

-class xxConfigHelp(wx.html.HtmlWindow):	# The "Help with Radios" first-level page
-  """Create the help screen for the configuration tabs."""
-  def __init__(self, parent):
-    wx.html.HtmlWindow.__init__(self, parent, -1, size=(win_width, 100))
-    if "gtk2" in wx.PlatformInfo:
-      self.SetStandardFonts()
-    self.SetFonts("", "", [10, 12, 14, 16, 18, 20, 22])
-    self.SetBackgroundColour(parent.bg_color)
-    # read in text from file help_conf.html in the directory of this module
-    self.LoadFile('help_conf.html')
-
 class QPowerMeterCalibration(wx.Frame):
  """Create a window to enter the power output and corresponding ADC value AIN1/2"""
  def __init__(self, parent, local_names):
@@ -2302,7 +2291,8 @@ class ControlMixin:
        if name in ('hot_key_ptt_toggle', 'hot_key_ptt_if_hidden', 'keyupDelay', 'cwTone', 'pulse_audio_verbose_output',
                    'start_cw_delay', 'start_ssb_delay', 'maximum_tx_secs', 'quisk_serial_cts', 'quisk_serial_dsr',
                    'hot_key_ptt1', 'hot_key_ptt2', 'midi_ptt_toggle', 'TxRxSilenceMsec',
-                    'fixed_tune_offset', 'calibrate_temp_20', 'calibrate_temp_40', 'calibrate_current_0', 'calibrate_current_1'):
+                    'fixed_tune_offset', 'calibrate_temp_20', 'calibrate_temp_40', 'calibrate_current_0', 'calibrate_current_1',
+                    'remote_radio_mic_jitter_ms'):
          setattr(conf, name, x)
          application.ImmediateChange(name)
        elif name[0:4] in ('lin_', 'win_'):
@@ -84,7 +84,7 @@ h3     {font-size:1.6rem;}
 <div class="contents">
 <h1>
 <a id="Welcome"></a>
-Welcome to QUISK (September 2025)
+Welcome to QUISK (June 2026)
 </h1>

 <p>
@@ -197,7 +197,7 @@ Quisk is free open source software written in Python and C. It is hosted on the
 <br>
 <p>
 If you have Python 3 installed on your computer, just continue to use that version.
-<b>On Windows Quisk requires Python 3.8, 3.9, 3.10, 3.11, 3.12 or 3.13.</b>
+On Windows Quisk requires Python 3.8 or higher.
 If you want to install a more recent version of Python, uninstall the old version first.
 Running multiple versions of Python is possible but can be confusing and is not necessary.
 <b>A Quisk installation is needed for each version of Python you have. If you upgrade to a newer Python
@@ -208,8 +208,7 @@ you must re-install Quisk. But your Quisk settings will be preserved.</b>
 <p>
 Windows does not include Python, so you must first install a recent version of 64-bit Python 3.
 If you already have 64-bit Python 3 installed, just keep using it.
-<b>On Windows Quisk requires Python 3.8, 3.9, 3.10, 3.11, 3.12 or 3.13.</b>
-There may be newer versions of Python, but until support is added, use the versions listed above.
+On Windows Quisk requires Python 3.8 or higher.
 Python is available from <a href="http://www.python.org/">http://www.python.org</a>.
 There is an option to <b>Add Python to PATH</b>. You MUST select
 this option so that you can start python by just typing "python" instead of the whole path
@@ -256,6 +255,8 @@ and then name the shortcut, perhaps "Quisk".
 If you check the properties you will see that Windows expanded the location and start directory to the full path.
 If you are curious, Quisk and its Python source files are installed in "<b>your_install_directory</b>\Lib\site-packages\quisk".
 If you change to that directory you can run Quisk with "pythonw quisk.py".
+Quisk has its icon file in quisk\icons. Right-click your desktop shortcut and change the Icon to
+ "<b>your_install_directory</b>\Lib\site-packages\quisk\icons\quisk.ico".
 </p>
 <br>
 <p>
@@ -306,6 +307,7 @@ These are part of your operating system. You only install them once unless it ch
 </p>
 <br>
 <pre>
+sudo apt-get install gcc
 sudo apt-get install libfftw3-dev
 sudo apt-get install libasound2-dev
 sudo apt-get install portaudio19-dev
@@ -383,12 +385,14 @@ You only clone github for the initial installation. To update Quisk, use pull fo
 <pre>
 cd ~/quisk
 git pull
+make clean
 make
 </pre>
 <br>
 <p>
 You run Quisk by running the file quisk.py with python3. For example, "python3 /home/jim/quisk/quisk.py".
 You can create a desktop icon to do that, but the method depends on your version of Linux.
+The quisk icon is the file quisk/icons/quisk.svg.
 <b>Never run Quisk with root privelege by using sudo. Fix the permission problem instead.</b>
 To get started you must tell Quisk what kind of radio hardware you have. Press the Config button and select Radios.
 Add a radio from the list of hardware radios available. Or add the best match.
@@ -1,5 +1,6 @@
 #include <Python.h>
 #include <stdlib.h>
+#include <string.h>
 #include <math.h>
 #include <complex.h>
 #include "quisk.h"
@@ -1,6 +1,7 @@
 #include <Python.h>
 #include <stdlib.h>
 #include <math.h>
+#include <string.h>
 #include <complex.h>	// Use native C99 complex type for fftw3
 #include "quisk.h"
 #include "filter.h"
@@ -414,7 +414,7 @@ double quiskFilt111D4Coefs[196] = { 0.000022860383861326, 0.000070265173417164,
 0.000878636067621920, 0.000694724116305488, 0.000487289901409396, 0.000301317969124407, 0.000160689233204503,
 0.000070265173417164, 0.000022860383861326} ;

-// Sample 53333 Hz, pass 20000, stop 24000, ripple 0.1 dB, atten 100 dB.  For SDR-IQ.  Stop 0.45000.
+// Sample 53333 Hz, pass 20000, stop 24000, ripple 0.1 dB, atten 100 dB.  For SDR-IQ.  Pass 0.375. Stop 0.45000.
 double quiskFilt53D1Coefs[55] = { 0.000318858391362187, 0.001662116369387873, -0.000065237353639775, -0.000854885424783294,
 0.001693126335254083, -0.002034310867663472, 0.001354648789538254, 0.000509693525155950, -0.003079059747940221, 0.005242349925004462,
 -0.005626507739484119, 0.003235398612833476, 0.001883583294529978, -0.008273775245721798, 0.013282431836060808, -0.013924391581141530,
@@ -426,7 +426,7 @@ double quiskFilt53D1Coefs[55] = { 0.000318858391362187, 0.001662116369387873, -0
 -0.003079059747940221, 0.000509693525155950, 0.001354648789538254, -0.002034310867663472, 0.001693126335254083, -0.000854885424783294,
 -0.000065237353639775, 0.001662116369387873, 0.000318858391362187 } ;

-// Sample 53333 Hz, pass 10000, stop 12000, ripple 0.5 dB, atten 100 dB.  For SDR-IQ.  Stop 0.22500.
+// Sample 53333 Hz, pass 10000, stop 12000, ripple 0.5 dB, atten 100 dB.  For SDR-IQ.  Pass 0.1875. Stop 0.22500.
 double quiskFilt53D2Coefs[93] = { 0.000107966318729964, 0.000421475598772498, 0.000731343669484184, 0.000328611865414609,
 -0.001457272471508304, -0.004143803290279123, -0.005736802939367581, -0.004303861070721504, -0.000415676176666607,
 0.002561521351129964, 0.001705074918770091, -0.001794491466202784, -0.003398011312785532, -0.000595401366072839,
@@ -603,7 +603,7 @@ double quiskAudio48p6Coefs[71] = { 0.000324677779792651, 0.001038192405843851, 0
 0.001132278163758895, 0.002811674671240099, 0.002938055116822665, 0.002082337464742640, 0.001038192405843851,
 0.000324677779792651} ;

-// Sample 96 kHz, pass 6, stop 40, ripple 0.1 dB, atten 100 dB.  Stop 0.41667.
+// Sample 96 kHz, pass 6, stop 40, ripple 0.1 dB, atten 100 dB.  Pass 0.0625. Stop 0.41667.
 double quiskAudio96Coefs[11] = { -0.004756607210954994, -0.022893760473075838, -0.023609616122334920,
 0.078161168368381481, 0.277880235815005590, 0.388489826271597950, 0.277880235815005590,
 0.078161168368381481, -0.023609616122334920, -0.022893760473075838, -0.004756607210954994} ;
@@ -663,7 +663,7 @@ double quiskAudioFmHpCoefs[309] = { 0.004847574947800705, -0.001211970386842814,
 -0.000365311474947399, -0.000434052387522716, -0.000504808183463150, -0.000579117971409598, -0.000658731927598885, -0.000745515693376396,
 -0.000841696354699768, -0.000949749961336003, -0.001072277374239886, -0.001211970386842814, 0.004847574947800705} ;

-// Sample 24 kHz, pass 3, stop 4, ripple 0.1 dB, atten 100 dB.  Stop 0.166667.
+// Sample 24 kHz, pass 3, stop 4, ripple 0.1 dB, atten 100 dB.  Pass 0.125. Stop 0.166667.
 double quiskAudio24p3Coefs[100] = { 0.000040101217607380, 0.000144142945632828, 0.000313272623844654, 0.000472482653992188,
 0.000478145332060253, 0.000196098255702949, -0.000370577202968848, -0.000996638165520275, -0.001297816111521122,
 -0.000964536466628102, -0.000042557313824444, 0.000962997869327471, 0.001323534221298773, 0.000594056697947640,
@@ -0,0 +1,221 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="512"
+   height="512"
+   viewBox="0 0 512 512"
+   version="1.1"
+   id="svg5"
+   sodipodi:docname="quisk.svg"
+   inkscape:version="1.2.2 (b0a8486541, 2022-12-01)"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <sodipodi:namedview
+     id="namedview7"
+     pagecolor="#ffffff"
+     bordercolor="#000000"
+     borderopacity="0.25"
+     inkscape:showpageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1"
+     inkscape:document-units="px"
+     showgrid="false"
+     inkscape:zoom="1"
+     inkscape:cx="36.5"
+     inkscape:cy="265"
+     inkscape:window-width="1854"
+     inkscape:window-height="1011"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="layer1" />
+  <defs
+     id="defs2" />
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1">
+    <rect
+       style="fill:#c0c276;fill-opacity:1;stroke:#7180ff;stroke-width:48.671;stroke-dasharray:none;stroke-opacity:1"
+       id="rect556"
+       width="341.84088"
+       height="349.28082"
+       x="62.823105"
+       y="39.435188"
+       ry="63.709782" />
+    <path
+       style="fill:none;stroke:#7180ff;stroke-width:43.2582;stroke-dasharray:none;stroke-opacity:1"
+       id="path3352"
+       d="m 193.20147,396.22476 c 6.34642,4.65885 12.2534,9.94281 18.02477,15.29408 7.66447,7.60025 15.04758,15.4729 22.82647,22.96045 6.77582,6.4671 13.60289,12.87487 20.7907,18.88349 12.48185,9.03783 26.6187,15.49278 41.24908,20.07891 13.25326,2.83808 26.93926,1.98796 40.38664,1.44647 9.20443,-0.51765 18.4186,-0.74315 27.63591,-0.83235 5.72468,-0.0231 11.44941,-0.0285 17.17409,-0.009 6.5518,0.45377 13.10409,0.8185 19.62685,1.59571 0,0 -12.83677,-9.54278 -12.83677,-9.54278 v 0 c -6.57664,-0.66042 -13.17806,-1.05429 -19.77266,-1.4853 -5.6652,0.0193 -11.33079,0.0283 -16.99467,0.16838 -9.18212,0.18217 -18.37151,0.31632 -27.53553,0.96497 -13.36116,0.68668 -27.00081,1.48715 -40.0815,-1.91133 -5.00213,-1.62118 -9.82704,-3.39549 -14.63078,-5.53945 -1.63493,-0.7297 -6.26911,-3.36104 -4.89255,-2.21625 2.66168,2.21356 5.85064,3.70365 8.82036,5.48275 1.18824,0.71182 -2.31609,-1.51997 -3.47415,-2.27995 -7.27169,-6.00427 -14.22221,-12.36521 -21.05126,-18.86768 -7.76318,-7.43952 -15.14957,-15.24359 -22.67391,-22.91764 -5.64713,-5.35952 -11.55857,-10.4455 -17.53983,-15.42662 0,0 -15.05126,-5.84659 -15.05126,-5.84659 z" />
+    <path
+       style="fill:none;fill-opacity:1;stroke:#000000;stroke-width:17.3033;stroke-dasharray:none;stroke-opacity:1"
+       d="m 91.391053,213.41065 14.719477,-17.25897 11.13289,28.30763 12.1198,-17.78253 21.1946,-4.54944 18.44448,16.54887 12.64335,-45.07916 6.78807,-41.91379 11.53004,-41.685155 12.62529,26.532375 11.28934,37.31624 2.38907,28.97559 7.74488,35.33638 30.5342,-4.30873 22.19957,-13.63027 4.61563,-22.8555 13.28124,-96.170083 17.96907,92.980663 3.0811,45.22358 24.94369,-9.63446 10.832,-20.40026 14.95416,42.66002"
+       id="path15623"
+       sodipodi:nodetypes="cccccccccccccccccccccc" />
+    <rect
+       style="fill:#3e4fa1;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="rect16404"
+       width="17.303272"
+       height="117.87855"
+       x="86.571724"
+       y="246.9482"
+       inkscape:tile-cx="107.539"
+       inkscape:tile-cy="302.5"
+       inkscape:tile-w="16"
+       inkscape:tile-h="109"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <rect
+       style="fill:#3e4fa1;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18731"
+       width="17.303272"
+       height="117.87855"
+       x="103.87501"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <rect
+       style="fill:#3e4fa1;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18733"
+       width="17.303272"
+       height="117.87855"
+       x="121.17827"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <rect
+       style="fill:#3e4fa1;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18735"
+       width="17.303272"
+       height="117.87855"
+       x="138.48155"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <rect
+       style="fill:#3e4fa1;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18737"
+       width="17.303272"
+       height="117.87855"
+       x="155.78482"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <rect
+       style="fill:#dc34c6;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18739"
+       width="17.303272"
+       height="117.87855"
+       x="173.08809"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <rect
+       style="fill:#fffa41;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18741"
+       width="17.303272"
+       height="117.87855"
+       x="190.39134"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <rect
+       style="fill:#d20ac7;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18743"
+       width="17.303272"
+       height="117.87855"
+       x="207.69463"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <rect
+       style="fill:#3e4fa1;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18745"
+       width="17.303272"
+       height="117.87855"
+       x="224.99789"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <use
+       x="0"
+       y="0"
+       inkscape:tiled-clone-of="#rect16404"
+       xlink:href="#rect16404"
+       transform="translate(155.72944)"
+       id="use18747"
+       style="fill:#3e4fa1;fill-opacity:1" />
+    <rect
+       style="fill:#3e4fa1;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18749"
+       width="17.303272"
+       height="117.87855"
+       x="259.60446"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <rect
+       style="fill:#b931b2;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18751"
+       width="17.303272"
+       height="117.87855"
+       x="276.90775"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <rect
+       style="fill:#e7ec2e;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18753"
+       width="17.303272"
+       height="117.87855"
+       x="294.21097"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <rect
+       style="fill:#a735a6;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18755"
+       width="17.303272"
+       height="117.87855"
+       x="311.51425"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <rect
+       style="fill:#3e4fa1;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18757"
+       width="17.303272"
+       height="117.87855"
+       x="328.81754"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <rect
+       style="fill:#3e4fa1;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18759"
+       width="17.303272"
+       height="117.87855"
+       x="346.12079"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <rect
+       style="fill:#3e4fa1;fill-opacity:1;stroke:none;stroke-width:34.8847;stroke-dasharray:none;stroke-opacity:1"
+       id="use18761"
+       width="17.303272"
+       height="117.87855"
+       x="363.42407"
+       y="246.9482"
+       inkscape:tile-x0="99.539001"
+       inkscape:tile-y0="248" />
+    <path
+       id="path12957"
+       style="fill:none;fill-opacity:1;stroke:#7180ff;stroke-width:48.671;stroke-dasharray:none;stroke-opacity:1"
+       d="m 404.54932,300.57496 v 23.76192 c 0,35.29519 -28.4146,63.70978 -63.70977,63.70978 H 126.41823 c -35.295185,0 -63.709785,-28.41459 -63.709785,-63.70978 v -23.19942" />
+  </g>
+</svg>
@@ -32,6 +32,8 @@ with this:
 */

 #include <Python.h>
+#include <string.h>
+#include <stdio.h>

 void ** Quisk_API;		// array of pointers to functions and variables from module _quisk
 struct sound_conf * pt_quisk_sound_state;		// pointer to quisk_sound_state
@@ -1,5 +1,6 @@
 #include <Python.h>	// used by quisk.h
 #include <complex.h>	// Used by quisk.h
+#include <string.h>
 #include "quisk.h"

 // This module provides methods to access the state of the key.
@@ -0,0 +1,70 @@
+# This provides helper functions for our makefile.
+
+# Changes for MacOS support thanks to Mario, DL3LSM.
+# Changes for building from macports provided by Eric, KM4DSJ
+# Updated code for a Mac build contributed by Christoph, DL1YCF, December 2020.
+# Converted from setup.py to makefile by Jim Ahlstrom, June 2026
+
+import sys, os, subprocess, sysconfig
+
+if len(sys.argv) < 2:
+  sys.exit(2)
+
+job = sys.argv[1]
+
+def flags ():
+  # Fetch compiler flags and link flags from Python
+  result = subprocess.run(["python3-config", "--cflags"], capture_output=True, text=True, check=True)
+  cflags = result.stdout.strip()
+  cflags += " -fPIC"
+  result = subprocess.run(["python3-config", "--ldflags"], capture_output=True, text=True, check=True)
+  ldflags = result.stdout.strip()
+  ldflags += " -shared -lm -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-z,relro -g -fwrapv -O2 -lfftw3"
+  if sys.platform == "darwin":	# Build for Macintosh
+    cflags += " -DQUISK_HAVE_PORTAUDIO "
+    ldflags += " -lportaudio "
+    if os.path.isdir('/opt/local/include'):	# MacPorts
+      base_dir = '/opt/local'
+    elif os.path.isdir('/usr/local/include'):	# HomeBrew on macOS Intel 
+      base_dir = '/usr/local'
+    elif os.path.isdir('/opt/homebrew/include'): # HomeBrew on Apple Silicon
+      base_dir = '/opt/homebrew'
+    else:						# Regular build?
+      base_dir = '/usr'
+    if os.path.isfile(base_dir + "/include/pulse/pulseaudio.h"):
+      cflags += " -DQUISK_HAVE_PULSEAUDIO "
+      ldflags += " -lpulse "
+    cflags += " -I. -I%s/include " % base_dir
+    ldflags += " -L. -L%s/lib " % base_dir
+  elif "freebsd" in sys.platform:	#Build for FreeBSD
+    cflags += " -DQUISK_HAVE_PULSEAUDIO -I. -I/usr/local/include"
+    ldflags += " -lpulse -L. -L/usr/local/lib"
+  else:		# Linux
+    cflags += " -DQUISK_HAVE_ALSA -DQUISK_HAVE_PULSEAUDIO"
+    ldflags += " -lasound -lpulse"
+    if os.path.isfile("/usr/include/portaudio.h"):
+      cflags += " -DQUISK_HAVE_PORTAUDIO"
+      ldflags += " -lportaudio"
+  return cflags, ldflags
+
+if job == "--soapy":
+  # See if soapy is available
+  if os.path.isdir("/usr/include/SoapySDR") or os.path.isdir("/usr/local/include/SoapySDR"):
+    print('1')
+  else:
+    print('0')
+
+elif job == "--suffix":
+  # Determine the platform-specific extension suffix (e.g., .cpython-311-x86_64-linux-gnu.so)
+  print(sysconfig.get_config_var('EXT_SUFFIX'))
+
+elif job == "--cflags":
+  cc, ld = flags()
+  print(cc)
+
+elif job == "--ldflags":
+  cc, ld = flags()
+  print(ld)
+
+else:
+  sys.exit(1)
@@ -1,18 +1,93 @@
-.PHONY: quisk
+# This makefile replaces the old Python "setup.py build_ext" which has been deprecated.
+# See "quisk-old" below to make Quisk using the old setup.py.

-quisk:
+MODULE_NAME := _quisk
+OBJDIR := build/local
+SUBDIRS := afedrinet
+
+ifeq ($(shell python3 makefil.py --soapy), 1)
+SUBDIRS := $(SUBDIRS) soapypkg
+endif
+
+SRCS := \
+base64.c \
+extdemod.c \
+filter.c \
+freedv.c \
+handshake.c \
+is_key_down.c \
+microphone.c \
+quisk.c \
+quisk_wdsp.c \
+sha1.c \
+sound.c\
+sound_alsa.c \
+sound_directx.c \
+sound_portaudio.c \
+sound_pulseaudio.c \
+sound_wasapi.c \
+tci.c \
+utf8.c \
+utility.c \
+ws.c
+
+CFLAGS			:= $(shell python3 makefil.py --cflags)
+LDFLAGS			:= $(shell python3 makefil.py --ldflags)
+EXTENSION_SUFFIX	:= $(shell python3 makefil.py --suffix)
+TARGET := $(MODULE_NAME)$(EXTENSION_SUFFIX)
+
+#$(info Info CFLAGS $(CFLAGS))
+#$(info Info LDFLAGS $(LDFLAGS))
+#$(info Info TARGET $(TARGET))
+#$(info Info SUBDIRS $(SUBDIRS))
+
+OBJS := $(patsubst %.c, $(OBJDIR)/%.o, $(SRCS))
+
+.PHONY: all clean test
+.PHONY: $(SUBDIRS)
+
+# Default target
+all: $(OBJDIR) $(OBJDIR)/import_quisk_api.o ac2yd/remote.o $(TARGET) $(SUBDIRS)
+
+$(SUBDIRS):
+	$(MAKE) -C $@
+
+$(OBJDIR):
+	@mkdir -p $(OBJDIR)
+
+# Link the shared library object
+$(TARGET): $(OBJS) ac2yd/remote.o
+	$(CC) -o $@ $(OBJS) ac2yd/remote.o $(LDFLAGS)
+
+# Define the location for dependency files
+DEPS = $(patsubst %.o,$(OBJDIR)/%.d,$(notdir $(OBJS)))
+DEPFLAGS = -MMD -MP -MF $(OBJDIR)/$(notdir $*).d
+-include $(DEPS)
+
+# Compile the C source files into object files
+ac2yd/remote.o:	ac2yd/remote.c quisk.h filter.h
+	$(CC) -o $@ -c $< $(CFLAGS) $(DEPFLAGS)
+
+$(OBJDIR)/import_quisk_api.o: import_quisk_api.c
+	$(CC) -o $@ -c $< $(CFLAGS) $(DEPFLAGS)
+
+$(OBJDIR)/%.o: %.c | $(OBJDIR)
+	$(CC) -o $@ -c $< $(CFLAGS) $(DEPFLAGS)
+
+clean:
+	-rm -f  $(OBJDIR)/*.o $(OBJDIR)/*.d
+	-rm -f	ac2yd/*.o
+	-rm -f	$(MODULE_NAME)*.so
+	for dir in $(SUBDIRS); do \
+		$(MAKE) -C $$dir clean; \
+	done
+
+# Run a test script to verify that the module can be imported
+test: $(TARGET)
+	@python3 -c "import $(MODULE_NAME); print('Successfully imported:', $(MODULE_NAME).__file__)"
+
+
+
+.PHONY: quisk-old
+quisk-old:
 	python3 setup.py build_ext --force --inplace
-	@echo
-
-quisk3:
-	python3 setup.py build_ext --force --inplace
-	@echo
-
-soapy3:
-	(cd soapypkg; make soapy3)
-
-afedrinet3:
-	(cd afedrinet; make afedrinet3)
-
-perseus3:
-	(cd perseuspkg; make perseus3)
@@ -3,6 +3,7 @@
 #include <math.h>
 #include <sys/time.h>
 #include <complex.h>
+#include <string.h>
 #include <fftw3.h>
 #include "quisk.h"
 #include <sys/types.h>
@@ -1,7 +1,25 @@
+MODULE_NAME := perseus
+OBJDIR := ../build/local

-perseus2:
-	python2 setup.py build_ext --force --inplace
+CFLAGS			:= $(shell python3 ../makefil.py --cflags)
+LDFLAGS			:= $(shell python3 ../makefil.py --ldflags)
+EXTENSION_SUFFIX	:= $(shell python3 ../makefil.py --suffix)
+TARGET := $(MODULE_NAME)$(EXTENSION_SUFFIX)

-perseus3:
+# Default target: Link the shared library object
+$(TARGET): perseus.o $(OBJDIR)/import_quisk_api.o
+	$(CC) -o $@ perseus.o $(LDFLAGS) $(OBJDIR)/import_quisk_api.o
+
+# Compile the C source files into object files
+perseus.o: perseus.c ../quisk.h ../filter.h
+	$(CC) -o $@ -c $< $(CFLAGS) -I..
+
+.PHONY: clean
+clean:
+	-rm -f  *.o 
+	-rm -f  $(TARGET)
+
+.PHONY: perseus-old
+perseus-old:
 	python3 setup.py build_ext --force --inplace

@@ -297,11 +297,11 @@ static PyObject * open_device(PyObject * self, PyObject * args)


 	main_cleanup:
-	return PyString_FromString("ERROR");
+	return PyUnicode_FromString("ERROR");

 	exit_success:
 	
-	return PyString_FromString(buf128);
+	return PyUnicode_FromString(buf128);
 	
 	
 }
@@ -0,0 +1,47 @@
+[build-system]
+requires = ["setuptools>=61.0.0"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "quisk"
+version = "4.2.55"
+requires-python = ">=3.13"
+description = 'QUISK is a Software Defined Radio (SDR) transceiver that can control various radio hardware.'
+license = "GPL-2.0-or-later"
+license-files = ["license.txt"]
+authors = [
+  {name = "James C. Ahlstrom", email="jahlstr@gmail.com"}
+]
+keywords = ['quisk', 'sdr', 'software defined radio']
+classifiers = [
+	'Development Status :: 6 - Mature',
+	'Environment :: X11 Applications',
+	'Environment :: Win32 (MS Windows)',
+	'Intended Audience :: End Users/Desktop',
+	'Natural Language :: English',
+	'Operating System :: POSIX :: Linux',
+	'Operating System :: Microsoft :: Windows',
+	'Programming Language :: Python :: 3',
+	'Programming Language :: C',
+	'Topic :: Communications :: Ham Radio',
+]
+dynamic = ["readme"]
+
+[project.gui-scripts]
+quisk = "quisk.quisk:main"
+
+[project.urls]
+Homepage = "https://james.ahlstrom.name/quisk/index.html"
+Documentation = "https://james.ahlstrom.name/quisk/docs.html"
+Repository = "https://github.com/jimahlstrom/quisk"
+Changelog = "https://james.ahlstrom.name/quisk/CHANGELOG.txt"
+
+[tool.setuptools.package-data]
+"quisk.icons" = ["*"]
+
+[tool.setuptools]
+package-dir = {"quisk" = "."}
+packages = ["quisk", "quisk.n2adr", "quisk.softrock", "quisk.freedvpkg",
+		"quisk.hermes", "quisk.hiqsdr", "quisk.afedrinet", "quisk.soapypkg",
+		"quisk.sdrmicronpkg", "quisk.perseuspkg", "quisk.ac2yd", "quisk.multuspkg"]
+
@@ -3,6 +3,7 @@
 #include <stdlib.h>
 #include <math.h>
 #include <complex.h>	// Use native C99 complex type for fftw3
+#include <string.h>
 #include <fftw3.h>
 #include <sys/types.h>
 #include <stdbool.h>
@@ -4027,7 +4028,7 @@ static PyObject * open_rx_udp(PyObject * self, PyObject * args)
 	wVersionRequested = MAKEWORD(2, 2);
 	if (WSAStartup(wVersionRequested, &wsaData) != 0) {
 		sprintf(buf, "Failed to initialize Winsock (WSAStartup)");
-		return PyString_FromString(buf);
+		return PyUnicode_FromString(buf);
 	}
 	else {
 		cleanupWSA = 1;
@@ -4076,7 +4077,7 @@ static PyObject * open_rx_udp(PyObject * self, PyObject * args)
 	else {
 		sprintf(buf, "Failed to open socket");
 	}
-	return PyString_FromString(buf);
+	return PyUnicode_FromString(buf);
 }

 static PyObject * open_sound(PyObject * self, PyObject * args)
@@ -4290,7 +4291,7 @@ static PyObject * mixer_set(PyObject * self, PyObject * args)
 		return NULL;

 	quisk_alsa_mixer_set(card_name, numid, value, err_msg, QUISK_SC_SIZE);
-	return PyString_FromString(err_msg);
+	return PyUnicode_FromString(err_msg);
 }

 static PyObject * pc_to_hermes(PyObject * self, PyObject * args)
@@ -4493,12 +4494,12 @@ static PyObject * ip_interfaces(PyObject * self, PyObject * args)
 				baddr |= ~netmask;
 			tup = PyTuple_New(4);
 			if (name == NULL)
-				PyTuple_SetItem(tup, 0, PyString_FromString("unnamed"));
+				PyTuple_SetItem(tup, 0, PyUnicode_FromString("unnamed"));
 			else
-				PyTuple_SetItem(tup, 0, PyString_FromString(name));
-			PyTuple_SetItem(tup, 1, PyString_FromString(Win_NtoA(ipAddr)));
-			PyTuple_SetItem(tup, 2, PyString_FromString(Win_NtoA(netmask)));
-			PyTuple_SetItem(tup, 3, PyString_FromString(Win_NtoA(baddr)));
+				PyTuple_SetItem(tup, 0, PyUnicode_FromString(name));
+			PyTuple_SetItem(tup, 1, PyUnicode_FromString(Win_NtoA(ipAddr)));
+			PyTuple_SetItem(tup, 2, PyUnicode_FromString(Win_NtoA(netmask)));
+			PyTuple_SetItem(tup, 3, PyUnicode_FromString(Win_NtoA(baddr)));
 			PyList_Append(pylist, tup);
 			Py_DECREF(tup);
 		}
@@ -4517,10 +4518,10 @@ static PyObject * ip_interfaces(PyObject * self, PyObject * args)
 		while(p) {
 			if ((p->ifa_addr) && p->ifa_addr->sa_family == AF_INET) {
 				tup = PyTuple_New(4);
-				PyTuple_SetItem(tup, 0, PyString_FromString(p->ifa_name));
-				PyTuple_SetItem(tup, 1, PyString_FromString(Lin_NtoA(p->ifa_addr)));
-				PyTuple_SetItem(tup, 2, PyString_FromString(Lin_NtoA(p->ifa_netmask)));
-				PyTuple_SetItem(tup, 3, PyString_FromString(Lin_NtoA(p->ifa_broadaddr)));
+				PyTuple_SetItem(tup, 0, PyUnicode_FromString(p->ifa_name));
+				PyTuple_SetItem(tup, 1, PyUnicode_FromString(Lin_NtoA(p->ifa_addr)));
+				PyTuple_SetItem(tup, 2, PyUnicode_FromString(Lin_NtoA(p->ifa_netmask)));
+				PyTuple_SetItem(tup, 3, PyUnicode_FromString(Lin_NtoA(p->ifa_broadaddr)));
 				PyList_Append(pylist, tup);
 				Py_DECREF(tup);
 			}
@@ -4829,7 +4830,7 @@ static PyObject * set_multirx_mode(PyObject * self, PyObject * args)

 	if (!PyArg_ParseTuple (args, "ii", &index, &mode))
 		return NULL;
-	if (index < QUISK_MAX_SUB_RECEIVERS)
+	if (index >= 0 && index < QUISK_MAX_SUB_RECEIVERS)
 		multirx_mode[index] = mode;
 	Py_INCREF (Py_None);
 	return Py_None;
@@ -4841,7 +4842,7 @@ static PyObject * set_multirx_freq(PyObject * self, PyObject * args)

 	if (!PyArg_ParseTuple (args, "ii", &index, &freq))
 		return NULL;
-	if (index < QUISK_MAX_SUB_RECEIVERS)
+	if (index >= 0 && index < QUISK_MAX_SUB_RECEIVERS)
 		multirx_freq[index] = freq;
 	Py_INCREF (Py_None);
 	return Py_None;
@@ -4859,7 +4860,7 @@ static PyObject * set_multirx_play_channel(PyObject * self, PyObject * args)
 {
 	if (!PyArg_ParseTuple (args, "i", &multirx_play_channel))
 		return NULL;
-	if (multirx_play_channel >= QUISK_MAX_SUB_RECEIVERS)
+	if (multirx_play_channel < 0 || multirx_play_channel >= QUISK_MAX_SUB_RECEIVERS)
 		multirx_play_channel = -1;
 	Py_INCREF (Py_None);
 	return Py_None;
@@ -5637,6 +5638,10 @@ static void measure_freq(complex double * cSamples, int nSamples, int srate)
 			ipeak = i;
 		}
 	}
+	if (ipeak < 1)
+		ipeak = 1;
+	else if (ipeak > fft_size - 2)
+		ipeak = fft_size - 2;
 	c3 = 1.36 * (fft_average[ipeak+1] - fft_average[ipeak - 1]) / (fft_average[ipeak-1] + fft_average[ipeak] + fft_average[ipeak+1]);
 	freq = srate * (2 * (ipeak + c3) - fft_size) / 2 / fft_size;
 	freq += rx_tune_freq;
@@ -5660,7 +5665,7 @@ static PyObject * Xdft(PyObject * pyseq, int inverse, int window)
 	static fftw_complex * samples;		// complex data for fft
 	static fftw_plan planF, planB;		// fft plan for fftW
 	static double * fft_window;			// window function
-	Py_complex pycx;					// Python C complex value
+	complex double pycx;

 	if (PySequence_Check(pyseq) != 1) {
 		PyErr_SetString (QuiskError, "DFT input data is not a sequence");
@@ -5695,22 +5700,20 @@ static PyObject * Xdft(PyObject * pyseq, int inverse, int window)
 	for (i = 0; i < size; i++) {
 		obj = PySequence_GetItem(pyseq, j);
 		if (PyComplex_Check(obj)) {
-			pycx = PyComplex_AsCComplex(obj);
+			pycx = PyComplex_RealAsDouble(obj) + I * PyComplex_ImagAsDouble(obj);
 		}
 		else if (PyFloat_Check(obj)) {
-			pycx.real = PyFloat_AsDouble(obj);
-			pycx.imag = 0;
+			pycx = PyFloat_AsDouble(obj);
 		}
 		else if (PyInt_Check(obj)) {
-			pycx.real = PyInt_AsLong(obj);
-			pycx.imag = 0;
+			pycx = PyInt_AsLong(obj);
 		}
 		else {
 			Py_XDECREF(obj);
 			PyErr_SetString (QuiskError, "DFT input data is not a complex/float/int number");
 			return NULL;
 		}
-		samples[i] = pycx.real + I * pycx.imag;
+		samples[i] = pycx;
 		if (++j >= size)
 			j = 0;
 		Py_XDECREF(obj);
@@ -5736,9 +5739,7 @@ static PyObject * Xdft(PyObject * pyseq, int inverse, int window)
 	pyseq = PyList_New(fft_size);
 	j = (size - 1) / 2;		// zero frequency in input
 	for (i = 0; i < fft_size; i++) {
-		pycx.real = creal(samples[i]);
-		pycx.imag = cimag(samples[i]);
-		PyList_SetItem(pyseq, j, PyComplex_FromCComplex(pycx));
+		PyList_SetItem(pyseq, j, PyComplex_FromDoubles(creal(samples[i]), cimag(samples[i])));
 		if (++j >= size)
 			j = 0;
 	}
@@ -6009,6 +6010,8 @@ static PyObject * record_app(PyObject * self, PyObject * args)
 	}
 	// Initialize plan for multirx FFT
 	multirx_fft_width = multirx_data_width * MULTIRX_FFT_MULT;		// Use larger FFT than graph size
+	if (multirx_fft_next_samples)
+		free(multirx_fft_next_samples);
 	multirx_fft_next_samples = (fftw_complex *)malloc(multirx_fft_width * sizeof(fftw_complex));
 	multirx_fft_next_plan = quisk_create_or_cache_fftw_plan_dft_1d(multirx_fft_width, multirx_fft_next_samples, multirx_fft_next_samples, FFTW_FORWARD, FFTW_MEASURE);
 	if (current_graph)
@@ -29,6 +29,8 @@

 #define QUISK_CWKEY_DOWN	(quisk_hardware_cwkey || quisk_serial_key_down || quisk_midi_cwkey || quisk_remote_cwkey)

+#include <stdio.h>
+#include <stdlib.h>
 #ifdef MS_WINDOWS
 #define QUISK_SHUT_RD	SD_RECEIVE
 #define QUISK_SHUT_BOTH	SD_BOTH
@@ -264,6 +266,7 @@ extern void send_graph_data(double * fft_avg, int fft_size, double zoom, double
 PyObject * quisk_tci_set_params(PyObject * self, PyObject * args, PyObject * keywds);
 PyObject * quisk_tci_get_params(PyObject * self, PyObject * args);
 void tci_send_audio(complex double * cSamples, int nSamples);
+void tci_send_iq(complex double * cSamples, int nSamples);
 int tci_get_mic(complex double * cSamples, int mic_count);
 extern uint64_t tci_tx_audio_client;	// This is ws_cli_conn_t defined in ws.h.

@@ -39,6 +39,7 @@ from filters import Filters
 import dxcluster
 import configure
 import quisk_conf_defaults as conf
+import quisk_utils
 import quisk_wdsp

 for name in configure.name2format:      # Add defaults. These may be overwritten by a user config file.
@@ -742,6 +743,7 @@ class HamlibHandlerRig2:	# Test with telnet localhost 4532
    self.vfo = "Main"
    self.split_mode = 0
    self.split_vfo = 'VFO'
+    self.lock_mode = 0
    h = self.Handlers = {}
    h[''] = self.ErrProtocol
    h['dump_state']	= self.DumpState
@@ -765,6 +767,8 @@ class HamlibHandlerRig2:	# Test with telnet localhost 4532
    h['set_split_freq']	= self.SetSplitFreq
    h['get_split_vfo']	= self.GetSplitVfo
    h['set_split_vfo']	= self.SetSplitVfo
+    h['get_lock_mode']	= self.GetLockMode
+    h['set_lock_mode']	= self.SetLockMode
    self.MakeDumpState()
  def MakeDumpState(self):
    dump_state = []
@@ -1009,7 +1013,8 @@ class HamlibHandlerRig2:	# Test with telnet localhost 4532
      self.ErrParam()
    else:
      freq = int(freq + 0.5)
-      self.app.ChangeRxTxFrequency(freq, None)
+      # Like a real radio, keep the mode. Hamlib caches the mode, so the client would not notice a mode change.
+      self.app.ChangeRxTxFrequency(freq, None, keep_mode=True)
  def GetSplitFreq(self):	# The Tx Frequency
    self.Reply('TX Frequency', self.app.txFreq + self.app.VFO, 0)
  def SetSplitFreq(self):	# The Tx Frequency
@@ -1022,7 +1027,7 @@ class HamlibHandlerRig2:	# Test with telnet localhost 4532
    else:
      freq = int(freq + 0.5)
      # This always controls the Tx frequency
-      self.app.ChangeRxTxFrequency(None, freq)
+      self.app.ChangeRxTxFrequency(None, freq, keep_mode=True)
  def GetSplitVfo(self):
    self.Reply('Split', self.split_mode, 'TX VFO', self.split_vfo, 0)
  def SetSplitVfo(self):
@@ -1107,6 +1112,22 @@ class HamlibHandlerRig2:	# Test with telnet localhost 4532
        Lab = label
        diff = df
    self.app.filterButns.SetLabel(Lab, True)
+  # The code for the lock_mode and keep_mode was supplied by Karl Heinz - K5KHK. Thanks Karl!
+  def GetLockMode(self):
+    # Hamlib netrigctl always reads two lines, so an error reply "RPRT -4" makes it wait for its 10 second timeout.
+    # Reply like rigctld with the lock value and then "RPRT 0".
+    if self.extended:
+      self.Reply('Locked', self.lock_mode, 0)
+    else:
+      self.Send("%d\nRPRT 0\n" % self.lock_mode)
+  def SetLockMode(self):
+    lock = self.GetParamNumber()
+    try:
+      self.lock_mode = int(lock)
+    except:
+      self.ErrParam()
+    else:
+      self.Reply(0)
  def GetVfo(self):
    self.Reply('VFO', self.vfo, 0)
  def SetVfo(self):
@@ -2564,7 +2585,7 @@ class GraphScreen(wx.Window):
    else:
      self.mouse_is_rx = False
    if self.mouse_is_rx:
-      freq = application.rxFreq + self.VFO + wm * event.GetWheelRotation() // event.GetWheelDelta()
+      freq = application.rxFreq + self.VFO + quisk_utils.wheel_step(event.GetWheelRotation(), event.GetWheelDelta(), wm)
      if conf.freq_spacing:
        freq = self.FreqRound(freq, 0)
      elif freq >= 0:
@@ -2574,7 +2595,7 @@ class GraphScreen(wx.Window):
      tune = freq - self.VFO
      self.ChangeHwFrequency(self.txFreq, self.VFO, 'MouseWheel', event=event, rx_freq=tune)
    else:
-      freq = self.txFreq + self.VFO + wm * event.GetWheelRotation() // event.GetWheelDelta()
+      freq = self.txFreq + self.VFO + quisk_utils.wheel_step(event.GetWheelRotation(), event.GetWheelDelta(), wm)
      if conf.freq_spacing:
        freq = self.FreqRound(freq, 0)
      elif freq >= 0:
@@ -3642,8 +3663,8 @@ class HelpScreen(wx.html.HtmlWindow):
    if "gtk2" in wx.PlatformInfo:
      self.SetStandardFonts()
    self.SetFonts("", "", [10, 12, 14, 16, 18, 20, 22])
-    # read in text from file help.html in the directory of this module
-    self.LoadFile('help.html')
+    if not self.LoadFile('help.html'):
+      self.LoadFile('/usr/share/doc/quisk/help.html')
  def OnGraphData(self, data):
    pass
  def ChangeYscale(self, y_scale):
@@ -4030,7 +4051,9 @@ class App(wx.App):
    self.file_name_play_cq = ''
    self.midiControls = {}		# Control object and associated function for Midi control name
    self.tci_vfo = 0
-    self.tci_started = False
+    self.tci_dds = 0
+    self.tci_modulation = ''
+    self.tci_split_enable = 0
    # get the screen size - thanks to Lucian Langa
    x, y, self.screen_width, self.screen_height = wx.Display().GetGeometry()	# Using display index 0
    self.Bind(wx.EVT_IDLE, self.OnIdle)
@@ -4361,12 +4384,12 @@ class App(wx.App):
      value = getattr(conf, "pulse_audio_verbose_output")
      QS.tci_set_params(verbose=value)
      QS.tci_set_params(start=1);
-      self.tci_started = True
-      QS.tci_set_params(tci_dds=self.VFO)
-      QS.tci_set_params(tci_if=self.txFreq)
-      self.tci_vfo = self.txFreq + self.VFO
+      self.tci_dds = self.VFO
+      QS.tci_set_params(tci_dds=self.tci_dds)
+      self.tci_vfo = self.rxFreq + self.VFO
      QS.tci_set_params(tci_vfo=self.tci_vfo)
-      QS.tci_set_params(tci_modulation=self.mode)
+      self.tci_modulation = self.mode
+      QS.tci_set_params(tci_modulation=self.tci_modulation)
      QS.tci_set_params(tci_trx=0)
      QS.tci_set_params(tci_split_enable=0)
    return True
@@ -4693,6 +4716,8 @@ class App(wx.App):
    if msg:
      print(msg, end='')
    QS.close_key()
+    if QS.tci_get_params("tci_clients_count") > 0:
+      QS.tci_set_params(close=1)
    QS.set_file_name(record_button=0)	# Turn off file recording
    time.sleep(0.1)
    if self.sound_thread:
@@ -5782,7 +5807,6 @@ class App(wx.App):
      QS.set_sidetone(self.sidetone_volume, self.sidetone_0to1, self.ritFreq, conf.keyupDelay)
  def OnBtnSplit(self, event):	# Called when the Split check button is pressed
    self.split_rxtx = self.splitButton.GetValue()
-    QS.tci_set_params(tci_split_enable=self.split_rxtx)
    if self.split_rxtx:
      if self.split_offset == 0:
        if self.mode in ("CWL", "CWU"):
@@ -5796,7 +5820,7 @@ class App(wx.App):
      QS.set_split_rxtx(0)
      self.split_offset = self.txFreq - self.rxFreq
      self.txFreq = self.rxFreq
-      self.ChangeHwFrequency(self.txFreq, self.VFO, 'OnSplit', event=event)
+      self.ChangeHwFrequency(self.txFreq, self.VFO, 'OnSplit', event=event, rx_freq=self.rxFreq)
    self.screen.SetTxFreq(self.txFreq, self.rxFreq)
  def OnMenuSplitPlay1(self, event):
    self.split_rxtx_play = 1
@@ -6133,7 +6157,7 @@ class App(wx.App):
      self.freqDisplay.Display(self.txFreq + self.VFO)
      self.fldigi_new_freq = self.txFreq + self.VFO
    return change
-  def ChangeRxTxFrequency(self, rx_freq=None, tx_freq=None):
+  def ChangeRxTxFrequency(self, rx_freq=None, tx_freq=None, keep_mode=False):
    if not self.split_rxtx and not tx_freq:
      tx_freq = rx_freq
    if tx_freq:
@@ -6144,7 +6168,7 @@ class App(wx.App):
      else:					# Change the VFO
        vfo = (tx_freq // 5000) * 5000 - 5000
        tune = tx_freq - vfo
-        self.BandFromFreq(tx_freq)
+        self.BandFromFreq(tx_freq, keep_mode)
      self.ChangeHwFrequency(tune, vfo, 'FreqEntry')
    if rx_freq and self.split_rxtx:		# Frequency must be on-screen
      tune = rx_freq - self.VFO
@@ -6168,7 +6192,6 @@ class App(wx.App):
      self.ChangeRxTxFrequency(self.rxFreq + delta + self.VFO, self.txFreq + delta + self.VFO)
    Hardware.ChangeMode(mode)
    self.mode = mode
-    QS.tci_set_params(tci_modulation=mode)
    self.MakeFilterButtons(self.Mode2Filters(mode))
    QS.set_rx_mode(Mode2Index.get(mode, 3))
    if mode == 'CWL':
@@ -6335,7 +6358,8 @@ class App(wx.App):
      self.pttButton.Enable(False)
    else:
      self.pttButton.Enable(True)
-  def BandFromFreq(self, frequency):	# Change to a new band based on the frequency
+  def BandFromFreq(self, frequency, keep_mode=False):	# Change to a new band based on the frequency
+    # If keep_mode is True, do not change to the mode saved for the new band.
    if self.screen == self.bandscope_screen:
      return
    try:
@@ -6357,7 +6381,8 @@ class App(wx.App):
          vfo, tune, mode = self.bandState[band]
        except KeyError:
          vfo, tune, mode = (0, 0, 'LSB')
-        self.modeButns.SetLabel(mode, True)
+        if not keep_mode:
+          self.modeButns.SetLabel(mode, True)
        self.ChangeBand(band)
        break
  def ChangeBand(self, band):
@@ -6829,22 +6854,56 @@ class App(wx.App):
      if self.timer - self.clip_time0 > 1.0:
        self.clip_time0 = 0
        self.freqDisplay.Clip(0)
+    if QS.tci_get_params("tci_clients_count") > 0:
+      # These are change requests from TCI clients. All must be echoed with the new value from Quisk.
+      # modulation
+      mode = QS.tci_get_params("tci_modulation")
+      if mode is not None:	# TCI set new modulation
+        self.modeButns.SetLabel(mode, True)
+        self.tci_modulation = self.mode
+        QS.tci_set_params(tci_modulation=self.tci_modulation)
+      # split
+      split = QS.tci_get_params("tci_split_enable")
+      if split is not None:	# TCI set split_enable
+        self.splitButton.SetValue(split, True)
+        self.tci_split_enable = self.split_rxtx
+        QS.tci_set_params(tci_split_enable=self.tci_split_enable)
+      # tci dds == self.VFO
+      tci_dds = QS.tci_get_params("tci_dds")
+      if tci_dds is not None:
+        self.ChangeHwFrequency(0, tci_dds, 'TCIrequest')
+        self.tci_dds = self.VFO
+        QS.tci_set_params(tci_dds=self.tci_dds)
+      # tci_vfo == self.VFO + self.rxFreq
+      tci_vfo = QS.tci_get_params("tci_vfo")
+      if tci_vfo is not None:
+        self.ChangeRxTxFrequency(tci_vfo, None)
+        self.tci_vfo = self.VFO + self.rxFreq
+        QS.tci_set_params(tci_vfo=self.tci_vfo)
+      # tci_trx handled elsewhere
    if self.timer - self.heart_time0 > 0.10:	# call hardware to perform background tasks:
      self.heart_time0 = self.timer
      Hardware.HeartBeat()
-      if self.tci_started:
-        if self.tci_vfo != self.txFreq + self.VFO:	# limit the speed of frequency updates
-          self.tci_vfo = self.txFreq + self.VFO
+      if QS.tci_get_params("tci_clients_count") > 0:	# limit the speed of frequency updates
+        # these are changes made in Quisk that must be broadcast to all clients.
+        # modulation
+        if self.tci_modulation != self.mode:
+          self.tci_modulation = self.mode
+          QS.tci_set_params(tci_modulation=self.tci_modulation)
+        # split
+        if self.tci_split_enable != self.split_rxtx:
+          self.tci_split_enable = self.split_rxtx
+          QS.tci_set_params(tci_split_enable=self.tci_split_enable)
+        # tci dds == self.VFO
+        if self.tci_dds != self.VFO:
+          self.tci_dds = self.VFO
+          QS.tci_set_params(tci_dds=self.tci_dds)
+        # tci_vfo == self.VFO + self.rxFreq
+        tci_vfo = self.VFO + self.rxFreq
+        if self.tci_vfo != tci_vfo:
+          self.tci_vfo = tci_vfo
          QS.tci_set_params(tci_vfo=self.tci_vfo)
-        freq = QS.tci_get_params("tci_vfo")
-        if freq is not None:	# TCI frequency
-          self.ChangeRxTxFrequency(freq, None)
-        mode = QS.tci_get_params("tci_modulation")
-        if mode is not None:	# TCI mode
-          self.modeButns.SetLabel(mode, True)
-        split = QS.tci_get_params("tci_split_enable")
-        if split is not None:	# TCI split_enable
-          self.splitButton.SetValue(split, True)
+        # tci_trx handled elsewhere
      if self.is_HermesLite2:
        self.tx_inhibit = QS.get_params('quisk_tx_inhibit')
      else:
@@ -172,6 +172,22 @@ tx_level = {}
 # This is the maximum value of the slider.
 digital_tx_level = 100

+################ Receivers SuperPuper SDR, by UT3MK and US5NCJ 
+## hardware_file_name		Hardware file path, rfile
+# This is the file that contains the control logic for each radio.
+#hardware_file_name = 'ut3mkpkg/quisk_hardware.py'
+
+## widgets_file_name			Widget file path, rfile
+# This optional file adds additional controls for the radio.
+#widgets_file_name = ''
+
+## sdr1000_serial_port			Serial port, text
+# This is serial Port for the synthesizer, usually /dev/ttyUSBn on Linux or COMn on Win
+sdr1000_serial_port = "/dev/ttyUSB0"
+
+## sdr1000_serial_rate			Serial baud rate, integer
+# This is baud rate for the synthesizer.
+sdr1000_serial_rate = 57600


 ################ Receivers HiQSDR, The original N2ADR and HiQSDR radios.
@@ -425,7 +441,7 @@ hermes_PTT_hang_time = 4
 # This option only applies to the Hermes Lite 2. Set this to None if you don't have a tuner.
 # Set this to "Tune" to control the Icom AH-4 compatible ATU attached to the Hermes Lite 2 end plate.
 # Note that this option only applies to the HL2 end plate, not the IO board.
-# A tuner attached to the IO board is controlled from a button on the last line of the screen.
+# A tuner attached to the IO board is controlled from a button on the last line of the screen.
 # Then when the Spot button is pressed with a positive power, a tune request is sent to the ATU.
 # If the Spot button is pressed with a zero power level, the tuner is set to bypass mode.
 # Changes are immediate (no need to restart).
@@ -1508,6 +1524,19 @@ remote_radio_ip = ""
 # It is only necessary to enter it once on each computer.
 remote_radio_password = ""

+## remote_radio_mic_jitter_ms         Mic buffer msec for remote radio, integer
+# This is set on the remote radio, not the control head.  The network can hold the control
+# head's microphone packets for 100 msec or more and then deliver them in a burst, which is
+# common over Wi-Fi.  The transmit audio then has gaps.  This buffers the microphone audio
+# for the given time before transmitting it, so the bursts are smoothed out, at the cost
+# of that much more transmit delay.  Zero turns the buffer off, which is best on a wired
+# network.  If needed, try 150 msec.  The maximum is 500.  A change takes effect when the
+# next control head connects.
+remote_radio_mic_jitter_ms = 0
+#remote_radio_mic_jitter_ms = 100
+#remote_radio_mic_jitter_ms = 150
+#remote_radio_mic_jitter_ms = 250
+
 ## k4_tcp_ip			IP address for K4 TCP, text
 # This is the Quisk IP address for the TCP server implementing K4 commands.
 k4_tcp_ip = ""
@@ -1,6 +1,29 @@
 from __future__ import print_function
 from __future__ import division

+
+def wheel_step(rotation, delta, step):
+  """Convert signed wheel rotation into configured frequency steps.
+
+  A measured downward event reported rotation=-180 with delta=120. Scaling
+  that by a 50 Hz step gives -75 Hz; flooring the resulting absolute frequency
+  made downward tuning jump -100 Hz while upward tuning moved only +50 Hz.
+  Round the wheel units symmetrically first: +/-180 now gives +/-50 Hz, while
+  +/-240 still gives +/-100 Hz rather than being collapsed to one step.
+  """
+  if delta == 0:
+    return 0
+  rotation = int(rotation)
+  delta = int(delta)
+  step = int(step)
+  direction = -1 if rotation * delta < 0 else 1
+  whole_steps, remainder = divmod(abs(rotation), abs(delta))
+  if remainder * 2 > abs(delta):
+    whole_steps += 1
+
+  return direction * whole_steps * step
+
+
 class SplineInterpolator:	# From Numerical Recipes in C
  """Interpolate a table of [x, y] values."""
  def __init__(self, table, Xmin=None, Xmax=None):
@@ -26,6 +26,7 @@ import threading, webbrowser
 import _quisk as QS
 from quisk_widgets import *
 import configure
+import quisk_utils

 DEBUG = 0

@@ -630,7 +631,7 @@ class GraphScreen(wx.Window):
      mouse_x, mouse_y = self.GetMousePosition(event)
      self.SetTxFreq(index=mouse_x - self.originX)
  def OnWheel(self, event):
-    tune = self.display.tune_tx + event.GetWheelRotation() // event.GetWheelDelta()
+    tune = self.display.tune_tx + quisk_utils.wheel_step(event.GetWheelRotation(), event.GetWheelDelta(), 1)
    self.SetTxFreq(index=tune)

 class HelpScreen(wx.html.HtmlWindow):
@@ -640,8 +641,8 @@ class HelpScreen(wx.html.HtmlWindow):
    if "gtk2" in wx.PlatformInfo:
      self.SetStandardFonts()
    self.SetFonts("", "", [10, 12, 14, 16, 18, 20, 22])
-    # read in text from file help.html in the directory of this module
-    self.LoadFile('help_vna.html')
+    if not self.LoadFile('help_vna.html'):
+      self.LoadFile('/usr/share/doc/quisk/help_vna.html')
  def OnLinkClicked(self, link):
    webbrowser.open(link.GetHref(), new=2)

@@ -1,7 +1,9 @@
 // This module provides C access to the WDSP SDR library.

 #include <Python.h>
+#include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <complex.h>

 #define CLIP32			2147483647
@@ -0,0 +1 @@
+#
@@ -0,0 +1,569 @@
+# SDR-TRX Quisk Configuration File
+# This file is to integrate the function of control of the SDR-TRX wint Quisk and with WSJT-X.
+# This is for control of the SDR-TRX with using the UDP port port 12346.  WSJT-X interfaces with this
+# locally using UDP on port 2237.  Capital letters begin commands to the SDR-TRX from Quisk, 
+# and lowercase letters are for commands coming from WSJT-X (through this Quisk interface).
+# This is for usinng the SDR-TRX without a 3.5 mm audio card to the soundcard of the computer,
+# and the WSJT-X software using UDP, and the data coming over UDP part 12345 too.
+# It requires the libldl/ directory from weakmon to be in the directory you run this from.
+# It also requires the WSJTXClass.py file from wsjtx_transceiver_interface to be in the lib directory
+# and the version of that class. I have supplied a pruned down versions of ft8.py and ft4.45, because we don't need much
+# other than FT8Send and FT4Send from those files.  You need to edit transceiver_config.yml to have your callsign and grid, etc.
+
+import socket
+import time
+import yaml
+import struct
+import datetime
+import sys
+import os
+from ft8 import FT8Send
+from ft4 import FT4Send
+from quisk_hardware_model import Hardware as BaseHardware
+import struct
+import collections
+import lib.WSJTXClass as WSJTXClass  # To use encoders
+
+sys.path.append(os.path.expandvars('$WEAKMON'))
+
+DEBUG_ON = True
+
+#
+# Define the name of the hardware and the items on the hardware screen (see quisk_conf_defaults.py):
+#
+
+################ Receivers SdrTrx, The SdrTrx radio by Rob Frohne, KL7NA
+## hardware_file_name		Hardware file path, rfile
+# This is the file that contains the control logic for each radio.
+#hardware_file_name = 'sdrtrxpkg/quisk_hardware.py'
+
+## widgets_file_name			Widget file path, rfile
+# This optional file adds additional controls for the radio.
+#widgets_file_name = ''
+
+## si570_xtal_freq			Si570 crystal frequency, integer
+# This is the Si570 startup frequency in Hz.  114.285MHz is the typical
+# value from the data sheet; you can use 'usbsoftrock calibrate' to find
+# the value for your device.
+si570_xtal_freq = 114285000
+
+## rx_max_amplitude_correct		Max ampl correct, number
+# If you get your I/Q samples from a sound card, you will need to correct the
+# amplitude and phase for inaccuracies in the analog hardware.  The correction is
+# entered using the controls from the "Rx Phase" button on the config screen.
+# You must enter a positive number.  This controls the range of the control.
+rx_max_amplitude_correct = 0.2
+
+## rx_max_phase_correct			Max phase correct, number
+# If you get your I/Q samples from a sound card, you will need to correct the
+# amplitude and phase for inaccuracies in the analog hardware.  The correction is
+# entered using the controls from the "Rx Phase" button on the config screen.
+# You must enter a positive number.  This controls the range of the control in degrees.
+rx_max_phase_correct = 10.0
+
+
+# SDR-TRX Hardware Control Class
+#
+
+class Hardware(BaseHardware):
+    # These are "static variable substitutes" since python doesn't have them.
+    # They are shared by all instances of the class and don't get redefinede each time a method is called.
+    # Move these into the Hardware class.
+    # Uncomment these lines if you wish to use Pulseaudio
+    name_of_sound_play = "pulse"
+
+    # Radio's Frequency limits.
+    radio_lower = 3500000
+    radio_upper = 30000000
+    PACKET_SIZE = 1444  # 4 bytes for packet number + 360 * 4 bytes for int32_t pairs
+    # Using 16 bit samples, so 2 bytes per sample.
+
+    # Set the number of Hz the signal is tuned to above the center frequency to avoid 1/f noise.
+    vfo_Center_Offset = 10000
+
+    tx_ready_wsjtx = False
+    tx_ready_wsjtx_sent = False
+    tx_now = False
+
+    # This is the open code for the WSJT server.
+    ft8_encoder = FT8Send()
+    ft4_encoder = FT4Send()
+
+    class Packet:
+        def __init__(self, data):
+            self.number = struct.unpack('<I', data[:4])[0]
+            self.pairs = [struct.unpack('<hh', data[i:i+4]) for i in range(4, len(data), 4)]
+    
+    class PacketQueue:  
+        def __init__(self):
+            self.queue = collections.deque()
+
+        def add_packet(self, packet):
+            self.queue.append(packet)
+            self.queue = collections.deque(sorted(self.queue, key=lambda p: p.number))
+
+        def check_missing_packets(self):
+            for i in range(1, len(self.queue)):
+                if self.queue[i].number != self.queue[i-1].number + 1:
+                    avg_pairs = [((self.queue[i-1].pairs[j][0] + self.queue[i].pairs[j][0]) // 2,
+                                (self.queue[i-1].pairs[j][1] + self.queue[i].pairs[j][1]) // 2)
+                                for j in range(len(self.queue[i-1].pairs))]
+                    self.queue.insert(i, Packet(struct.pack('<I', self.queue[i-1].number + 1) +
+                                                b''.join(struct.pack('<ii', pair[0], pair[1]) for pair in avg_pairs)))
+
+        def get_packets(self):
+            packets = list(self.queue)
+            self.queue.clear()
+            return packets
+
+    def open(self):
+        # Connection for WSJT-X and data
+        self.PICO_UDP_IP = None  # Will be set to the IP of the machine sending data
+        self.COMMAND_UDP_PORT = 12346  # This is the port the Pico listens on for UDP commands coming from quisk.
+        self.DATA_UDP_PORT = 12345  # This is the port the quisk listens on for UDP IQ data coming from the Pico W.
+        self.BROADCAST_PORT = 12347  # This is the port the Pico gets our IP address from.-
+        self.broadcast_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        self.broadcast_sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
+        self.broadcast_message = "Quisk"
+        self.broadcast_sock.setblocking(False)
+        self.isConnected = False
+        self.command_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        self.command_sock.setblocking(False)
+        self.data_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        self.data_sock.bind(('', self.DATA_UDP_PORT))
+        print("Data socket bound to IP:", self.data_sock.getsockname()[0])
+        self.data_sock.setblocking(False)
+        self.establish_connection()
+            
+        self.InitSamples(2, 0)  # Two bytes per sample, little endian.
+        self.queue = self.PacketQueue()
+        time.sleep(2)
+        # Poll for version. Should probably confirm the response on this.
+        version = str(self.get_parameter("VER"))  # The way the firmware is now, this sets it up to use the UART or UDP.
+        # UART is used if get_parameter uses the UART, and UDP is used if it uses the UDP.
+        print(version)
+        # Return an informative message for the config screen
+        t = str(version) + ". Capture from sound card %s." % self.conf.name_of_sound_capt
+        configs_file = open('transceiver_config.yml', 'r')
+        configs = yaml.load(configs_file, Loader=yaml.BaseLoader)
+
+        # Global variables
+        self.callsign = configs['callsign']
+        self.grid = configs['grid']
+        self.current_msg = ''
+        self.rx_callsign = ''
+        self.mode = 'FT8'
+        self.tx_freq = 1200
+
+        # Connection for WSJT-X
+        WSJTX_UDP_IP = "127.0.0.1"  # Assuming you are running WSJT-X on the same computer as Quisk...
+        WSJTX_UDP_PORT = 2237
+        self.wsjtx_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        self.wsjtx_sock.bind((WSJTX_UDP_IP, WSJTX_UDP_PORT))
+        self.wsjtx_sock.setblocking(False)
+
+        self.StartSamples()
+        return t
+
+    def close(self):
+        # Called once to close the Hardware
+        self.get_parameter("RX") # Make sure we are in RX mode.
+        time.sleep(1)  # Wait for RX to be set.
+        self.StopSamples()
+        self.command_sock.close()
+        self.wsjtx_sock.close()
+        self.broadcast_sock.close()
+
+    def ChangeFrequency(self, tune, vfo, source='', band='', event=None):
+        # Called whenever quisk requests a frequency change.
+        # This sends the FREQ command  dto set the centre frequency of the radio,
+        # and will also move the 'tune' frequency (the section within the RX passband
+        # which is to be demodulated) if it falls outside the passband (+/- sample_rate/2).
+        print("Setting VFO to %d, with tune to %d." % (vfo, tune))
+        print("Setting VFO to %d." % vfo)
+        if vfo < self.radio_lower:
+            vfo = self.radio_lower
+            print("Outside range! Setting to %d" % self.radio_lower)
+
+        if vfo > self.radio_upper:
+            vfo = self.radio_upper
+            print("Outside range! Setting to %d" % self.radio_upper)
+
+        # print("sample_rate =", sample_rate)  # I believe sample_rate comes from quisk.
+        # If the tune frequency is outside the RX bandwidth, set it to somewhere within that bandwidth.
+        if tune > (vfo + sample_rate / 2) or tune < (vfo - sample_rate / 2):
+            tune = vfo + self.vfo_Center_Offset
+            print("Bringing tune frequency back into the RX bandwidth.")
+
+        # success = self.set_parameter("FREQ",str(vfo))
+        self.set_parameter("FREQ", str(vfo))
+        self.set_parameter("TX_FREQ", str(tune))
+
+        return tune, vfo
+
+    def OnButtonPTT(self, event):
+        btn = event.GetEventObject()
+        if btn.GetValue():
+            self.get_parameter("TX")
+            print("TX")
+        else:
+            self.get_parameter("RX")
+            print("RX")
+        return BaseHardware.OnButtonPTT(self, event)
+
+
+
+    def establish_connection(self):
+        while not self.isConnected:
+            print("isConnected is: ", self.isConnected)
+            # Check if a connection is established
+            # Wait for data to arrive and set PICO_UDP_IP to the sender's IP
+            while self.PICO_UDP_IP is None:  #  This needs to be fixed.  It continues to send broadcast packets.
+                try:
+                    print("Sending broadcast message...")
+                    self.broadcast_sock.sendto(self.broadcast_message.encode(), ('<broadcast>', self.BROADCAST_PORT))
+                    time.sleep(1)  # Wait for 1 second before sending the next broadcast message
+                except Exception as e:
+                    print("Broadcast message did not work: {0}".format(e))
+                    break
+                try:
+                    data, addr = self.data_sock.recvfrom(self.PACKET_SIZE)  # Adjust the buffer size as needed
+                    self.PICO_UDP_IP = addr[0]
+                    print("PICO_UDP_IP set to:", self.PICO_UDP_IP)
+                    # if data == self.broadcast_message:
+                    self.isConnected = True
+                except socket.error:
+                    if self.PICO_UDP_IP is not None:
+                        print("Connection established with Pico W at IP:", self.PICO_UDP_IP, "but exception occurred.")
+                        break  # Exit the loop if self.PICO_UDP_IP is not None
+                    pass  # No data available yet
+
+    def GetRxSamples(self):
+        # Initialize packet counter and time marker
+        # This routine is made for FT8 and FT4, where we need to send a packet every 15 seconds.
+        # The Pico W sending the data has a sample rate of 48046 samples per second > 48 ks/s.
+        # We made the packets so they carry 180 samples per packet.  That gives 4000 packets 
+        # per 15 seconds.  We discard any packets after that four times a minute at 59, 14, 29, 
+        # and 44 seconds.  This should make four ticks per minute, and we should be able to ignore
+        # # them if we are doing FT8 or FT4.  Something else might be more optimum for other modes.
+
+        packet_counter = 0
+        next_time_marker = 0
+        send_packets = False
+
+        while True:
+            # Check if we've reached the next time marker
+            current_time = time.time()
+            current_seconds = current_time % 60
+
+            # Define the time markers
+            if 59 <= current_seconds < 60:
+                next_time_marker = current_time + 1 - current_seconds
+                send_packets = True
+            elif 14 <= current_seconds < 15:
+                next_time_marker = current_time + 1 - (current_seconds - 14)
+                send_packets = True
+            elif 29 <= current_seconds < 30:
+                next_time_marker = current_time + 1 - (current_seconds - 29)
+                send_packets = True
+            elif 44 <= current_seconds < 45:
+                next_time_marker = current_time + 1 - (current_seconds - 44)
+                send_packets = True
+
+            # If we've reached the next time marker, reset the packet counter
+            if current_time >= next_time_marker and send_packets:
+                packet_counter = 0
+                send_packets = False
+
+            try:
+                data, addr = self.data_sock.recvfrom(self.PACKET_SIZE)
+                self.no_data_repeat = 0
+            except socket.error:
+                # Send a broadcast message to the Pico W to get the IP address in case it has reset.
+                self.broadcast_sock.sendto(self.broadcast_message.encode(), ('<broadcast>', self.BROADCAST_PORT))
+                break  # No more packets available
+
+            packet = self.Packet(data)
+            self.queue.add_packet(packet)
+
+            # Check for missing packets and fill them in
+            self.queue.check_missing_packets()
+
+            # Get the packets and pass them to the processing thread
+            packets = self.queue.get_packets()
+
+            for packet in packets:
+                data = b''.join(struct.pack('<hh', pair[0], pair[1]) for pair in packet.pairs)
+                # if len(data) % 4 != 0:  # Each I/Q pair is now 4 bytes (2 * 2 bytes)
+                #     self.GotReadError(self, DEBUG_ON, "Error: Mismatched number of I and Q samples")
+                #     continue
+                            # If we've already sent 4000 packets since the last time marker, discard the rest
+                if packet_counter >= 4000:
+                    continue
+
+                self.AddRxSamples(data)
+                packet_counter += 1
+
+    #
+    # UDP comms functions, to communicate with the Raspberry Pi Pico W board used in the SDR-TRX.
+    #
+
+    def get_parameter(self, string):
+        string = string + "\n"
+        self.command_sock.sendto(string.encode(), (self.PICO_UDP_IP, self.COMMAND_UDP_PORT))
+        return self.get_argument()
+
+    def set_parameter(self, string, arg):
+        string = string + "," + arg + "\r" + "\n"
+        self.command_sock.sendto(string.encode(), (self.PICO_UDP_IP, self.COMMAND_UDP_PORT))
+        print('arg is: ', arg)
+        temp_arg = self.get_argument()
+        print('temp_arg is: ', temp_arg)
+        return True
+
+    def get_argument(self):
+        self.command_sock.setblocking(True)
+        try:
+            data1 = self.command_sock.recv(1024)
+            print('Received on line 178: ', data1)
+        except Exception as e:
+            print("Exception occurred: {0}".format(e))
+            return -1
+        self.command_sock.setblocking(False)
+        if not data1.startswith(b'OK'):
+            print('Received on line 185: ', data1)
+        # Maybe we didn't catch an OK line?
+        else:
+            while True:
+                try:
+                    data1 = self.command_sock.recv(1024)
+                    print('Received on line 190: ', data1)
+                    break
+                except BlockingIOError:
+                    pass
+        # Check to see if we have a comma in the string. If not, there is no argument.
+        if data1.find(b',') == -1:
+            return -1
+
+        data1 = data1.split(b',')[1].rstrip(b'\r\n')
+        print("data1 =")
+        print(data1)
+
+        # Check for the OK string.  Should we wait for the OK string?
+        try:
+            data2 = self.command_sock.recv(1024)
+            if data2.startswith(b'OK'):  
+                return data2
+        except BlockingIOError:
+            return -1
+
+    # We might want to integrate the UDP reads below into the stuff above.
+
+    #  The code below is to interface WSJT-X with SDR-TRX.
+
+    def encode_ft8(self, msg):
+        try:
+            a77 = self.ft8_encoder.pack(msg, 1)
+            symbols = self.ft8_encoder.make_symbols(a77)
+        except Exception as e:
+            print("FT8 encoder error, check message!")
+            print(f"Exception type: {type(e).__name__}")
+            print(f"Exception message: {str(e)}")
+            symbols = None
+            time.sleep(3)
+        return symbols
+
+    def encode_ft4(self, msg):
+        try:
+            a77 = self.ft4_encoder.pack(msg, 1)
+            symbols = self.ft4_encoder.make_symbols(a77)
+        except:
+            print("FT4 encoder error, check message!")
+            symbols = None
+            time.sleep(3)
+        return symbols
+
+    def load_symbols(self, symbols):
+        print("Load symbols into transmitter..")
+        self.command_sock.sendto(b'm', (self.PICO_UDP_IP, self.COMMAND_UDP_PORT))
+        count = 0
+        for symbol in symbols:
+            self.command_sock.sendto(struct.pack('>B', symbol), (self.PICO_UDP_IP, self.COMMAND_UDP_PORT))
+            count += 1
+            # Wait to avoid Arduino serial buffer overflow.  This may not be needed with the Pico.
+            if count % 50 == 0:
+                time.sleep(0.05)
+        self.command_sock.sendto(b'\0', (self.PICO_UDP_IP, self.COMMAND_UDP_PORT))
+        resp = self.command_sock.recv(1)
+        if resp == b'm':
+            print("Load OK")
+        else:
+            print(resp)
+
+    def change_freq(self, new_freq):
+        #global self.tx_freq
+        self.command_sock.setblocking(True)
+        print("Change TX frequency to:", new_freq)
+        self.command_sock.sendto(b'o', (self.PICO_UDP_IP, self.COMMAND_UDP_PORT))
+        self.command_sock.sendto(struct.pack('<H', new_freq), (self.PICO_UDP_IP, self.COMMAND_UDP_PORT))
+        time.sleep(0.05)    
+        resp = self.command_sock.recv(1)
+        print("resp after changing offset is: ", resp)
+        self.command_sock.setblocking(False)
+        if resp == b'o':
+            print("New freq OK")
+            self.tx_freq = new_freq
+
+    def set_mode(self, new_mode):  # New more robust protocol.
+        #global mode
+        if new_mode == 'FT8':
+            self.command_sock.sendto(b'e', (self.PICO_UDP_IP, self.COMMAND_UDP_PORT))
+            time.sleep(.05)
+            resp = self.command_sock.read(1) 
+            print("resp = ", resp)       
+            if resp == b'e':
+                self.mode = new_mode
+                print("Switched to: {0}".format(new_mode)) 
+                self.current_msg = '' 
+                return True
+        elif new_mode == 'FT4':
+            self.command_sock.sendto(b'f', (self.PICO_UDP_IP, self.COMMAND_UDP_PORT))
+            time.sleep(0.05)
+            resp = self.command_sock.recv(1)
+            print("resp = ", resp)       
+            if resp == b'f':
+                self.mode = new_mode
+                self.current_msg = ''
+                print("Switched to: {0}".format(new_mode))
+                return True
+        else:
+            return False
+
+
+    def new_msg(self, msg):
+        #global self.current_msg
+        #global self.mode
+        if msg != self.current_msg:
+            print("Message: {0}".format(msg))
+            if 'FT8' in self.mode:
+                symbols = self.encode_ft8(msg)
+            else:
+                symbols = self.encode_ft4(msg)
+            if symbols.any():
+                # symbols = [kk for kk in range(79)]
+                self.load_symbols(symbols)
+                self.current_msg = msg
+            else:
+                return
+        else:
+            time.sleep(0.005)  #  Do we need this?
+
+    def transmit(self):
+        if False:  # not current_msg:
+            print("No previous message!")
+            time.sleep(1)
+        else:
+            print("TX!")
+            self.command_sock.sendto(b't', (self.PICO_UDP_IP, self.COMMAND_UDP_PORT))
+            # self.tx_now = False
+
+    def check_time_window(self, utc_time):
+        time_window = 15 if 'FT8' in self.mode else 7
+        print("Time window: ", time_window)  # Is correct for FT8 and FT4.
+        rm = utc_time.second % time_window
+        if rm > 1 and rm < time_window - 1:  # Within one second of exact time for FT8.
+            return False
+        else:
+            return True
+
+    # See if HeartBeat will work for this:
+    def HeartBeat(self):  # Should be called at 10 Hz from the main.
+        # Check transmitter is initialized
+        #raise Exception("In HeartBeat")
+    
+        # print("\n\nWait for transmitter ready...")
+        if self.tx_ready_wsjtx == False:
+            if self.tx_ready_wsjtx_sent == False:
+                self.command_sock.sendto(b'r', (self.PICO_UDP_IP, self.COMMAND_UDP_PORT))
+                time.sleep(0.05)
+                self.tx_ready_wsjtx_sent = True
+            while True:
+                try:
+                    x = self.command_sock.recv(1)
+                    if x == b'r':
+                        print("Transmitter ready!")
+                        self.tx_ready_wsjtx = True
+                    break
+                except BlockingIOError:
+                    pass          
+        if self.tx_ready_wsjtx == True:
+            try:
+                fileContent = self.wsjtx_sock.recv(1024)
+            except Exception as e:
+                if e == BlockingIOError:  # This is our way of pollig the socket.
+                    # Maybe use select to stop the errors printing after we quit.
+                    return BaseHardware.HeartBeat(self)
+                else:
+                    # print("Error in HeartBeat")
+                    # print(f"Exception type: {type(e).__name__}")
+                    # print(f"Exception message: {str(e)}")
+                    pass
+            try:
+                NewPacket = WSJTXClass.WSJTX_Packet(fileContent, 0)
+                NewPacket.Decode()
+
+                if NewPacket.PacketType == 1:
+                    # print('New Packet is type 1')
+                    StatusPacket = WSJTXClass.WSJTX_Status(fileContent, NewPacket.index)
+                    StatusPacket.Decode()
+    
+                    # Check TX frequency and update transceiver
+                    new_freq = StatusPacket.TxDF
+                    new_mode = StatusPacket.TxMode.strip()
+                    
+
+                    if new_freq != self.tx_freq:
+                        # time.sleep(0.03)
+                        print('Changing frequency from {0} to {1}'.format(self.tx_freq, new_freq))
+                        try:
+                            self.change_freq(new_freq)
+                        except Exception as e:
+                            print(f"Exception occurred: {e}")
+                        print ('It is now ', self.tx_freq)
+
+                    # print('new_mode', new_mode, ' self.mode is: ', self.mode)
+                    if new_mode != self.mode:  
+                        print("Mode before: {0}".format(self.mode))
+                        self.set_mode(new_mode)
+                        print("New mode after: {0}".format(self.mode))
+
+                    # Check if TX is enabled
+                    if StatusPacket.Transmitting == 1:
+                        # Check time, avoid transmitting out of the time slot
+                        current_time = datetime.datetime.now()
+                        utc_time = current_time.astimezone(datetime.timezone.utc)
+                        self.tx_now = self.check_time_window(utc_time)
+                        if self.tx_now:
+                            self.command_sock.sendto(b'p', (self.PICO_UDP_IP, self.COMMAND_UDP_PORT))
+                        message = StatusPacket.TxMessage
+                        message = message.replace('<', '')
+                        message = message.replace('>', '')
+                        print('Message is: ', message)
+                        self.new_msg(message.strip())
+                        print("Encoded message is: ", self.current_msg)
+                        # print("tx_now is: ", self.tx_now)
+                        if self.tx_now:
+                            print('Transmitting')
+                            self.transmit()
+                        print("Time: {0}:{1}:{2}".format(utc_time.hour, utc_time.minute, utc_time.second))
+                    else:
+                        pass
+                        #  print('Not Transmitting')
+                    return BaseHardware.HeartBeat(self)
+        
+            except Exception as e:
+                # print("Error in HeartBeat")
+                # print(f"Exception type: {type(e).__name__}")
+                # print(f"Exception message: {str(e)}")
+                # traceback.print_exc()
+                return BaseHardware.HeartBeat(self)
@@ -4,14 +4,8 @@ import os

 # This file is used to build the Linux and Mac versions of Quisk. Windows builds are not included.

-# You must define the version here.  A title string including
-# the version will be written to __init__.py and read by quisk.py.
-
-Version = '4.2.52'
-
-fp = open("__init__.py", "w")	# write title string
-fp.write("#Quisk version %s\n" % Version)
-fp.write("from .quisk import main\n")
+fp = open('__init__.py')		# Read in the version
+Version = fp.readline().strip()[15:]
 fp.close()

 sources = ['quisk.c', 'sound.c', 'is_key_down.c', 'microphone.c', 'utility.c',
@@ -88,7 +82,7 @@ N1MM+ and software that uses Hamlib.
 		'quisk.hermes', 'quisk.hiqsdr', 'quisk.afedrinet', 'quisk.soapypkg',
 		'quisk.sdrmicronpkg', 'quisk.perseuspkg', 'quisk.ac2yd', 'quisk.multuspkg'],
 	package_dir =  {'quisk' : '.'},
-	package_data = {'' : ['*.txt', '*.html', '*.so', '*.dll']},
+	package_data = {'' : ['*.txt', '*.html', '*.so', '*.dll'], 'quisk' : ['icons/*']},
 	entry_points = {'gui_scripts' : ['quisk = quisk.quisk:main', 'quisk_vna = quisk.quisk_vna:main']},
 	ext_modules = Modules,
 	provides = ['quisk'],
@@ -1,7 +1,24 @@
+MODULE_NAME := soapy
+OBJDIR := ../build/local

-soapy2:
-	python2 setup.py build_ext --force --inplace
+CFLAGS			:= $(shell python3 ../makefil.py --cflags)
+LDFLAGS			:= $(shell python3 ../makefil.py --ldflags)
+EXTENSION_SUFFIX	:= $(shell python3 ../makefil.py --suffix)
+TARGET := $(MODULE_NAME)$(EXTENSION_SUFFIX)

-soapy3:
+# Default target: Link the shared library object
+$(TARGET): soapy.o $(OBJDIR)/import_quisk_api.o
+	$(CC) -o $@ soapy.o $(LDFLAGS) -lSoapySDR $(OBJDIR)/import_quisk_api.o
+
+# Compile the C source files into object files
+soapy.o: soapy.c ../quisk.h ../filter.h
+	$(CC) -o $@ -c $< $(CFLAGS) -I..
+
+.PHONY: clean
+clean:
+	-rm -f  *.o 
+	-rm -f  $(MODULE_NAME)*.so
+
+.PHONY: soapy-old
+soapy-old:
 	python3 setup.py build_ext --force --inplace
-
@@ -1,5 +1,6 @@
 #include <Python.h>
 #include <complex.h>
+#include <string.h>
 #include <SoapySDR/Device.h>
 #include <SoapySDR/Formats.h>
 #include <SoapySDR/Version.h>
@@ -223,7 +224,7 @@ static PyObject * open_device(PyObject * self, PyObject * args)
 	else {
 		snprintf(buf128, 128, "SoapySDRDevice_make fail: %s", SoapySDRDevice_lastError());
 	}
-	return PyString_FromString(buf128);
+	return PyUnicode_FromString(buf128);
 }

 static void get_direc_len(const char * name, int * direction, int * length)
@@ -254,7 +255,7 @@ static PyObject * get_device_list(PyObject * self, PyObject * args)	// Called fr
 	for (i = 0; i < length; i++) {
 		dict = PyDict_New();
 		for (j = 0; j < results[i].size; j++)
-			PyDict_SetItemString(dict, results[i].keys[j], PyString_FromString(results[i].vals[j]));
+			PyDict_SetItemString(dict, results[i].keys[j], PyUnicode_FromString(results[i].vals[j]));
 		PyList_Append(devices, dict);
 		Py_DECREF(dict);
 	}
@@ -329,7 +330,7 @@ static PyObject * set_parameter(PyObject * self, PyObject * args)	// Called from
 		}
 	}
 	if (msg200[0])
-		return PyString_FromString(msg200);
+		return PyUnicode_FromString(msg200);
 	Py_INCREF (Py_None);
 	return Py_None;
 }
@@ -377,7 +378,7 @@ static PyObject * get_parameter(PyObject * self, PyObject * args)	// Called from
 		pylist = PyList_New(0);
 		names = SoapySDRDevice_listAntennas(sdev, direction, 0, &len_list);
 		for (i = 0; i < len_list; i++) {
-			pyobj = PyString_FromString(names[i]);
+			pyobj = PyUnicode_FromString(names[i]);
 			PyList_Append(pylist, pyobj);
 			Py_DECREF(pyobj);
 		}
@@ -440,7 +441,7 @@ static PyObject * get_parameter(PyObject * self, PyObject * args)	// Called from
 		pylist = PyList_New(0);
 		names = SoapySDRDevice_listGains(sdev, direction, 0, &len_list);
 		for (i = 0; i < len_list; i++) {
-			pyobj = PyString_FromString(names[i]);
+			pyobj = PyUnicode_FromString(names[i]);
 			PyList_Append(pylist, pyobj);
 			Py_DECREF(pyobj);
 		}
@@ -450,7 +451,7 @@ static PyObject * get_parameter(PyObject * self, PyObject * args)	// Called from
 	else if ( ! strncmp(name, "soapy_listGainsValues", length)) {
 		pylist = PyList_New(0);
 		pylst2 = PyList_New(0);		// First element is the total gain
-		pyobj = PyString_FromString("total");
+		pyobj = PyUnicode_FromString("total");
 		PyList_Append(pylst2, pyobj);
 		Py_DECREF(pyobj);
 		range = SoapySDRDevice_getGainRange(sdev, direction, 0);
@@ -460,7 +461,7 @@ static PyObject * get_parameter(PyObject * self, PyObject * args)	// Called from
 		names = SoapySDRDevice_listGains(sdev, direction, 0, &len_list);
 		for (i = 0; i < len_list; i++) {
 			pylst2 = PyList_New(0);
-			pyobj = PyString_FromString(names[i]);
+			pyobj = PyUnicode_FromString(names[i]);
 			PyList_Append(pylst2, pyobj);
 			Py_DECREF(pyobj);
 			range = SoapySDRDevice_getGainElementRange(sdev, direction, 0, names[i]);
@@ -4,6 +4,7 @@
 #define PY_SSIZE_T_CLEAN
 #include <Python.h>
 #include <complex.h>
+#include <string.h>
 #include <math.h>
 #include <sys/time.h>
 #include <time.h>
@@ -986,6 +987,8 @@ int quisk_read_sound(void)	// Called from sound thread
 	// Perhaps replace the samples with samples from a file
 	if (quisk_record_state == FILE_PLAY_SAMPLES)
 		quisk_play_samples(cSamples, nSamples);
+	// Send radio IQ samples to TCI
+	tci_send_iq(cSamples, nSamples);
 #if ! DEBUG_MIC
 	nSamples = quisk_process_samples(cSamples, nSamples);
 #endif
@@ -2,6 +2,7 @@
 * This modue provides sound access for QUISK using the ALSA
 * library for Linux.
 */
+#include <string.h>
 #ifdef QUISK_HAVE_ALSA
 #include <Python.h>
 #include <complex.h>
@@ -454,7 +455,7 @@ static int device_list(PyObject * py, snd_pcm_stream_t stream, char * name)
 			}
 			snprintf(buf100, 100, "%s %s (hw:%d,%d)", card_text, pcm_text, card, dev);
 			if (py) {		// add to list of devices
-				PyList_Append(py, PyString_FromString(buf100));
+				PyList_Append(py, PyUnicode_FromString(buf100));
 			}
 			if (name) {		// return the "hw:" name
 				if (strstr(buf100, name)) {
@@ -1129,10 +1130,10 @@ static void midi_in_devices(PyObject * pylist, int just_names)
 					}
 					else {
 						pytup = PyTuple_New(2);
-						PyList_Append(pylist, pytup);
-						PyTuple_SET_ITEM(pytup, 0, PyUnicode_DecodeUTF8(friendly_name, strlen(friendly_name), "replace"));
+						PyTuple_SetItem(pytup, 0, PyUnicode_DecodeUTF8(friendly_name, strlen(friendly_name), "replace"));
 						snprintf(card_name, 32, "hw:%d,%d,%d", card, device, sub);
-						PyTuple_SET_ITEM(pytup, 1, PyUnicode_DecodeUTF8(card_name, strlen(card_name), "replace"));
+						PyTuple_SetItem(pytup, 1, PyUnicode_DecodeUTF8(card_name, strlen(card_name), "replace"));
+						PyList_Append(pylist, pytup);
 					}
 				}
 			}
@@ -1,3 +1,5 @@
+#include <string.h>
+
 #ifdef QUISK_HAVE_DIRECTX

 #include <Python.h>
@@ -55,14 +57,7 @@ static int match_name(LPCTSTR lpszDesc, const char * name)
 		Py_DECREF(py_unicode);
 		return 0;
 	}
-#if PY_MAJOR_VERSION >= 3
-	if (PyUnicode_READY(py_unicode) == 0)
-		length = PyUnicode_GET_LENGTH(py_unicode);
-	else
-		length = 0;
-#else
-	length = PyUnicode_GET_SIZE(py_unicode);
-#endif
+	length = PyUnicode_GetLength(py_unicode);
 	if (length <= 0) {
 		Py_DECREF(py_unicode);
 		Py_DECREF(py_substring);
@@ -1,6 +1,8 @@
 /*
 * This module provides sound access for QUISK using the portaudio library.
 */
+#include <string.h>
+
 #ifdef QUISK_HAVE_PORTAUDIO

 #include <Python.h>
@@ -475,7 +477,7 @@ static int device_list(PyObject * py, int input)
                // found one
                if (py) {
                    snprintf(buf100, 100, "%s", info->name);
-					PyList_Append(py, PyString_FromString(buf100));
+					PyList_Append(py, PyUnicode_FromString(buf100));
                } 
            }
        }
@@ -34,6 +34,8 @@
 * 2020 Apr by N2ADR Changes in printf's
 */

+#include <string.h>
+
 #ifdef QUISK_HAVE_PULSEAUDIO

 #include <Python.h>
@@ -1030,20 +1032,20 @@ static void source_sink(const char * name, const char * descr, pa_proplist * pro
 	PyObject * pytup;

 	pytup = PyTuple_New(3);
-	PyList_Append(pylist, pytup);
-	PyTuple_SET_ITEM(pytup, 0, PyString_FromString(name));
-	PyTuple_SET_ITEM(pytup, 1, PyString_FromString(descr));
+	PyTuple_SetItem(pytup, 0, PyUnicode_FromString(name));
+	PyTuple_SetItem(pytup, 1, PyUnicode_FromString(descr));
 	value = pa_proplist_gets(props, "device.api");
    
 	if (value && ! strcmp(value, "alsa")) {
 		snprintf(buf300, 300, "%s %s (hw:%s,%s)", pa_proplist_gets(props, "alsa.card_name"), pa_proplist_gets(props, "alsa.name"),
 			 pa_proplist_gets(props, "alsa.card"), pa_proplist_gets(props, "alsa.device"));

-		PyTuple_SET_ITEM(pytup, 2, PyString_FromString(buf300));
+		PyTuple_SetItem(pytup, 2, PyUnicode_FromString(buf300));
 	}
 	else {
-		PyTuple_SET_ITEM(pytup, 2, PyString_FromString(""));
+		PyTuple_SetItem(pytup, 2, PyUnicode_FromString(""));
 	}
+	PyList_Append(pylist, pytup);
 }


@@ -1074,7 +1076,7 @@ static void index_callback(pa_context *c, uint32_t idx, void *userdata) {
    //printf("%u\n", idx);
 }

-PyObject * quisk_pulseaudio_sound_devices(PyObject * self, PyObject * args)
+PyObject * quisk_pulseaudio_sound_devices(PyObject * self, PyObject * args)	// Called from the GUI thread
 {	// Return a list of PulseAudio device names [pycapt, pyplay]
 	PyObject * pylist, * pycapt, * pyplay;
 	pa_mainloop *pa_names_ml;
@@ -7,6 +7,9 @@
 * Note that there is NO WARRANTY AT ALL.  USE AT YOUR OWN RISK!!

 */
+
+#include <string.h>
+
 #ifdef QUISK_HAVE_WASAPI

 #define UNICODE
@@ -1125,10 +1128,10 @@ PyObject * quisk_wasapi_sound_devices(PyObject * self, PyObject * args)		// Call
 		EXIT_ON_ERROR(hr)
 		// data items are (name, id, is_raw)
 		pytup = PyTuple_New(3);
+		PyTuple_SetItem(pytup, 0, PyUnicode_FromWideChar(varName.pwszVal, -1));
+		PyTuple_SetItem(pytup, 1, PyUnicode_FromWideChar(pwszID, -1));
+		PyTuple_SetItem(pytup, 2, PyInt_FromLong(1));
 		PyList_Append(pyplay, pytup);
-		PyTuple_SET_ITEM(pytup, 0, PyUnicode_FromWideChar(varName.pwszVal, -1));
-		PyTuple_SET_ITEM(pytup, 1, PyUnicode_FromWideChar(pwszID, -1));
-		PyTuple_SET_ITEM(pytup, 2, PyInt_FromLong(1));
 		CoTaskMemFree(pwszID);
 		pwszID = NULL;
 		PropVariantClear(&varName);
@@ -1155,10 +1158,10 @@ PyObject * quisk_wasapi_sound_devices(PyObject * self, PyObject * args)		// Call
 		EXIT_ON_ERROR(hr)
 		// data items are (name, id, is_raw)
 		pytup = PyTuple_New(3);
+		PyTuple_SetItem(pytup, 0, PyUnicode_FromWideChar(varName.pwszVal, -1));
+		PyTuple_SetItem(pytup, 1, PyUnicode_FromWideChar(pwszID, -1));
+		PyTuple_SetItem(pytup, 2, PyInt_FromLong(1));
 		PyList_Append(pycapt, pytup);
-		PyTuple_SET_ITEM(pytup, 0, PyUnicode_FromWideChar(varName.pwszVal, -1));
-		PyTuple_SET_ITEM(pytup, 1, PyUnicode_FromWideChar(pwszID, -1));
-		PyTuple_SET_ITEM(pytup, 2, PyInt_FromLong(1));
 		CoTaskMemFree(pwszID);
 		pwszID = NULL;
 		PropVariantClear(&varName);
@@ -2,36 +2,37 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <string.h>
 #include "ws.h"
 #include <pthread.h>
 #include <complex.h>
 #include <time.h>
 #include "quisk.h"
+#include "filter.h"

 #define TCI_STREAM_DATA_BYTES	16384
 #define TCI_RX_BUF_SIZE		1024
-#define TCI_COMMAND_SIZE	32
+#define TCI_COMMAND_SIZE	64
+#define BAD_TCI_IF		999999999

 static int verbose;	// non-zero for verbose log messages
 static int tci_port;

 // Implement the ExpertSDR2 Version 1.4 protocol:
-// The only sample rate is 48000. The Tx audio parameters are copied from the Rx audio stream.
+// The Tx audio parameters are copied from the Rx audio stream.
 // The only sample type is FLOAT32 type 3.
-// WSJT-X RX_AUDIO_STREAM must be two channels and Stream.length is the number of floats (not samples).
-// WSJT-X TX_AUDIO_STREAM always returns two channels and Stream.length is the number of floats (not samples).
-// WSJT-X TX_AUDIO_STREAM is twice as long, but the data is in the first half and garbage is in the second half.
-// WSJT-X TX_CHRONO Stream.length is the number of floats, and the returned TX_AUDIO_STREAM length is equal to it.
 // It is unclear whether Stream.length is the number of floats, or half that for two channels. And version 1.4 lacks Stream.channels.
 // The protocol name for TCI version 1.4 is "protocol:ESDR,1.4;" and the port is 40001.
 // The protocol name for TCI version 2.0 is "protocol:ExpertSDR3,2.0;" and the port is 50001.
 // The TCI modulations are: am, sam, dsb, lsb, usb, cw, nfm, wfm, spec, digl, digu, drm.

 // These are TCI parameters:
-//static int64_t quisk_dds;
-//static int quisk_if;
+static long long quisk_dds;
+static long long client_dds=-1;
 static long long quisk_vfo;
 static long long client_vfo=-1;
+static int quisk_if;
+static int client_if=BAD_TCI_IF;
 static int quisk_trx;
 static int client_trx=-1;
 static int quisk_split_enable;
@@ -79,6 +80,16 @@ struct ClientData {	// data for each client
 	int audio_stream_channels;
 	int audio_stream_samples;
 	int audio_stream_bytes_per_sample;
+	// Rx stream decimation filters
+	struct quisk_cHB45Filter HalfBand1;
+	struct quisk_cFilter filtDecim3;
+	struct quisk_cFilter filtDecim48to24;
+	// Tx stream interpolation filters
+	struct quisk_cHB45Filter HalfBandTx1;
+	struct quisk_cHB45Filter HalfBandTx2;
+	struct quisk_cFilter filtTxInterp3;
+	int send_IQ_stream;
+	int IQ_stream_samplerate;
 } ;

 struct _Stream {
@@ -132,11 +143,14 @@ struct _StreamTypes StreamTypes[NUM_STREAM_TYPES] = {
 	{"lineout  ", 0}
 } ;

-static void PrintStream(const char * msg, size_t size)
+static int interpolate_tx_audio_stream(complex double * cSamples, int nSamples, struct ClientData * ctx);
+static int decimate_audio_stream(complex double * cSamples, int nSamples, struct ClientData * ctx);
+
+static void PrintStream(const char * msg, size_t size, int always)
 {
 	struct _Stream * pt = (struct _Stream *)msg;

-	if (time(NULL) - StreamTypes[pt->type].when > 5) {
+	if (always || time(NULL) - StreamTypes[pt->type].when > 5) {
 		StreamTypes[pt->type].when = time(NULL);
 		if (pt->type == TX_AUDIO_STREAM)
 			QuiskPrintf("TCI     Receiving %slength %5d:", StreamTypes[pt->type].name, (int)size);
@@ -164,7 +178,7 @@ static int sendframe_txt_bcast(uint16_t port, const char * msg)
 static size_t sendframe_bin(ws_cli_conn_t client, const char * msg, size_t size)
 {
 	if (verbose)
-		PrintStream(msg, size);
+		PrintStream(msg, size, 0);
 	return ws_sendframe_bin(client, msg, size);
 }

@@ -177,8 +191,12 @@ static int text_message(ws_cli_conn_t client, struct ClientData * ctx)

 	if (verbose)
 		QuiskPrintf("TCI     Received text      %s\n", ctx->msg_buf);
-	for (i = 0; ctx->msg_buf[i]; i++)
+		//QuiskPrintf("TCI     Received text      %s %20.6lf\n", ctx->msg_buf, QuiskTimeSec());
+	for (i = 0; ctx->msg_buf[i]; i++) {
+		char_buf[i] = ctx->msg_buf[i];		// make a copy of the command
 		ctx->msg_buf[i] = tolower(ctx->msg_buf[i]);
+	}
+	char_buf[i] = 0;
 	command = strtok_r(ctx->msg_buf, ":", &saveptr);
 	if (command == NULL)
 		return 0;
@@ -193,10 +211,20 @@ static int text_message(ws_cli_conn_t client, struct ClientData * ctx)
 			for (i = 0; i < tci_clients_count; i++) {
 				if (tci_clients_list[i] == client) {
 					ctx->send_Rx_audio_stream = 1;
+					// Rx stream filters
+					memset(&ctx->HalfBand1,
+						0, sizeof(struct quisk_cHB45Filter));
+					quisk_filt_cInit(&ctx->filtDecim3,
+						quiskFilt144D3Coefs, sizeof(quiskFilt144D3Coefs)/sizeof(double));
+					quisk_filt_cInit(&ctx->filtDecim48to24,
+						quiskFilt48dec24Coefs, sizeof(quiskFilt48dec24Coefs)/sizeof(double));
+
 					break;
 				}
 			}
 			pthread_mutex_unlock(&clients_list_mutex);
+			sendframe_txt(client, char_buf);
+			return 0;
 		}
 		else if (strcmp(command, "audio_stop") == 0) {
 			pthread_mutex_lock(&clients_list_mutex);
@@ -207,19 +235,24 @@ static int text_message(ws_cli_conn_t client, struct ClientData * ctx)
 				}
 			}
 			pthread_mutex_unlock(&clients_list_mutex);
+			sendframe_txt(client, char_buf);
+			return 0;
 		}
 		else if (strcmp(command, "audio_stream_sample_type") == 0) {
 			if (strcmp(arg1, "float32") == 0) {
 				ctx->audio_stream_sample_type = TCI_FLOAT32;
 				ctx->audio_stream_bytes_per_sample = 4;
+				sendframe_txt(client, char_buf);
 			}
-			else {
-				return 0;
-			}
+			return 0;
 		}
 		else if (strcmp(command, "audio_samplerate") == 0) {
-			if (atoi(arg1) != 48000)
+			i = atoi(arg1);
+			if (i != 48000 && i != 24000 && i != 12000 && i != 8000)
 				return 0;
+			ctx->audio_stream_samplerate = i;
+			sendframe_txt(client, char_buf);
+			return 0;
 		}
 		else if (strcmp(command, "audio_stream_channels") == 0) {
 			if (strcmp(arg1, "1") == 0)
@@ -228,23 +261,74 @@ static int text_message(ws_cli_conn_t client, struct ClientData * ctx)
 				ctx->audio_stream_channels = 2;
 			else
 				return 0;
+			sendframe_txt(client, char_buf);
+			return 0;
 		}
 		else if (strcmp(command, "audio_stream_samples") == 0) {
 			return 0;	// do not send
 		}
 		break;
+	case 'd':
+		if (strcmp(command, "dds") == 0) {
+			if (arg2) {
+				client_dds = atoll(arg2);
+				// Echo comes from quisk_tci_set_params()
+			}
+			else {
+				snprintf(char_buf, TCI_COMMAND_SIZE, "dds:0,%lld;", quisk_dds);
+				sendframe_txt(client, char_buf);
+			}
+			return 0;
+		}
+		break;
 	case 'i':
-		if (strcmp(command, "iq_start") == 0)
-			return 0;	// do not send
-		else if (strcmp(command, "iq_stop") == 0)
-			return 0;	// do not send
-		else if (strcmp(command, "iq_samplerate") == 0)
-			return 0;	// do not send
+		if (strcmp(command, "iq_start") == 0) {
+			pthread_mutex_lock(&clients_list_mutex);
+			for (i = 0; i < tci_clients_count; i++) {
+				if (tci_clients_list[i] == client) {
+					ctx->send_IQ_stream = 1;
+					break;
+				}
+			}
+			pthread_mutex_unlock(&clients_list_mutex);
+			sendframe_txt(client, char_buf);
+			return 0;
+		}
+		else if (strcmp(command, "iq_stop") == 0) {
+			pthread_mutex_lock(&clients_list_mutex);
+			for (i = 0; i < tci_clients_count; i++) {
+				if (tci_clients_list[i] == client) {
+					ctx->send_IQ_stream = 0;
+					break;
+				}
+			}
+			pthread_mutex_unlock(&clients_list_mutex);
+			sendframe_txt(client, char_buf);
+			return 0;
+		}
+		else if (strcmp(command, "iq_samplerate") == 0) {
+			ctx->IQ_stream_samplerate = quisk_sound_state.sample_rate;
+			snprintf(char_buf, TCI_COMMAND_SIZE, "iq_samplerate:%d;", quisk_sound_state.sample_rate);
+			sendframe_txt(client, char_buf);
+			return 0;
+		}
+		else if (strcmp(command, "if") == 0) {
+			if (arg3) {
+				client_if = atoi(arg3);
+				// Echo comes from quisk_tci_set_params()	UNIMPLEMENTED
+			}
+			else {
+				snprintf(char_buf, TCI_COMMAND_SIZE, "if:0,0,%d;", quisk_if);
+				sendframe_txt(client, char_buf);
+			}
+			return 0;
+		}
 		break;
 	case 'm':
 		if (strcmp(command, "modulation") == 0) {
 			if (arg2) {
 				strncpy(client_modulation, arg2, TCI_COMMAND_SIZE - 1);
+				// Echo comes from quisk_tci_set_params()
 			}
 			else {
 				snprintf(char_buf, TCI_COMMAND_SIZE, "modulation:0,%.9s;", quisk_modulation);
@@ -260,6 +344,7 @@ static int text_message(ws_cli_conn_t client, struct ClientData * ctx)
 					client_split_enable = 1;
 				else
 					client_split_enable = 0;
+				// Echo comes from quisk_tci_set_params()
 			}
 			else {
 				if (quisk_split_enable)
@@ -285,12 +370,20 @@ static int text_message(ws_cli_conn_t client, struct ClientData * ctx)
 						tci_tx_audio_samples = 0;
 						tci_tx_audio_rate = ctx->audio_stream_samplerate;
 						pthread_mutex_unlock(&tx_buffer_mutex);
+						// Tx stream filters
+						memset(&ctx->HalfBandTx1,
+							0, sizeof(struct quisk_cHB45Filter));
+						memset(&ctx->HalfBandTx2,
+							0, sizeof(struct quisk_cHB45Filter));
+						quisk_filt_cInit(&ctx->filtTxInterp3,
+							quiskAudio24p3Coefs, sizeof(quiskAudio24p3Coefs)/sizeof(double));
 					}
 				}
 				else if (client == tci_tx_audio_client) {
 					client_trx = 0;
 					tci_tx_audio_client = 0;
 				}
+				// Echo comes from quisk_tci_set_params()
 			}
 			else {
 				if (quisk_trx)
@@ -308,6 +401,7 @@ static int text_message(ws_cli_conn_t client, struct ClientData * ctx)
 		if (strcmp(command, "vfo") == 0) {
 			if (arg3) {
 				client_vfo = atoll(arg3);
+				// Echo comes from quisk_tci_set_params()
 			}
 			else {
 				snprintf(char_buf, TCI_COMMAND_SIZE, "vfo:0,0,%lld;", quisk_vfo);
@@ -330,7 +424,9 @@ static void onopen(ws_cli_conn_t client)
 	ctx = malloc(sizeof(struct ClientData));
 	ctx->msg_length = 0;
 	ctx->send_Rx_audio_stream = 0;
+	ctx->send_IQ_stream = 0;
 	ctx->audio_stream_samplerate = 48000;
+	ctx->IQ_stream_samplerate = quisk_sound_state.sample_rate;
 	ctx->audio_stream_sample_type = TCI_FLOAT32;
 	ctx->audio_stream_channels = 2;
 	ctx->audio_stream_samples = 0;
@@ -346,9 +442,11 @@ static void onopen(ws_cli_conn_t client)
 		QuiskPrintf("TCI *Connection opened, addr: %s\n", cli);
 	}

-	sendframe_txt(client, "protocol:ESDR,1.4;");
+	sendframe_txt(client, "protocol:ExpertSDR3,2.0;");
 	//sendframe_txt(client, "vfo_limits:30000,30000000;");  Not known due to transverters
-	//sendframe_txt(client, "if_limits:-48000,48000;");
+	int if_limit = quisk_sound_state.sample_rate / 2;
+	snprintf(command, TCI_COMMAND_SIZE, "if_limits:%d,%d;", - if_limit, if_limit);
+	sendframe_txt(client, command);
 	sendframe_txt(client, "trx_count:1;");
 	sendframe_txt(client, "channel_count:1;");
 	sendframe_txt(client, "device:QuiskSDR;");
@@ -358,10 +456,10 @@ static void onopen(ws_cli_conn_t client)

 	sendframe_txt(client, "start;");
 	sendframe_txt(client, "tx_enable:0,true;");
-	//snprintf(command, TCI_COMMAND_SIZE, "dds:0,%d;", quisk_dds);
-	//sendframe_txt(client, command);
-	//snprintf(command, TCI_COMMAND_SIZE, "if:0,0,%d;", quisk_if);
-	//sendframe_txt(client, command);
+	snprintf(command, TCI_COMMAND_SIZE, "dds:0,%lld;", quisk_dds);
+	sendframe_txt(client, command);
+	snprintf(command, TCI_COMMAND_SIZE, "if:0,0,%d;", quisk_if);
+	sendframe_txt(client, command);
 	snprintf(command, TCI_COMMAND_SIZE, "modulation:0,%.9s;", quisk_modulation);
 	sendframe_txt(client, command);
 	snprintf(command, TCI_COMMAND_SIZE, "vfo:0,0,%lld;", quisk_vfo);
@@ -398,12 +496,14 @@ static void onclose(ws_cli_conn_t client)
 static void onmessage(ws_cli_conn_t client, const unsigned char *msg, uint64_t size, int type)
 {
 	char echo_copy[TCI_RX_BUF_SIZE];
-	complex double sample;
+	int n;
+	static complex double * cCopy = NULL;
+	static int cCopy_size = 0;
+	struct ClientData * ctx = ws_get_connection_context(client);

 	if (type == WS_FR_OP_TXT) {
 		if (size > TCI_RX_BUF_SIZE / 2)
 			return;		// prevent overflow
-		struct ClientData * ctx = ws_get_connection_context(client);
 		if (ctx->msg_length + size >= TCI_RX_BUF_SIZE - 2)
 			ctx->msg_length = 0;	// prevent overflow
 		memcpy(ctx->msg_buf + ctx->msg_length, msg, size);	// append msg to buffer
@@ -437,7 +537,6 @@ static void onmessage(ws_cli_conn_t client, const unsigned char *msg, uint64_t s
 		const unsigned char * vpt2;
 		const unsigned char * vpt2_end;
 		int count2;
-		int buf_start=0, buf_end;

 		if (verbose >= 3) {
 			QuiskPrintf("\n\nMSG size %ld length %d\n   0 ", size, pt->length);
@@ -462,16 +561,20 @@ static void onmessage(ws_cli_conn_t client, const unsigned char *msg, uint64_t s
 		}

 		if (pt->type == TX_AUDIO_STREAM) {
+			n = pt->length * 7 + 100;	// Make room for 6X interpolation
+			if (cCopy_size < n) {
+				if (cCopy)
+					free(cCopy);
+				cCopy_size = n;
+				cCopy = (complex double *)malloc(cCopy_size * sizeof(complex double));
+			}
 			if (pt->length > 0 && client == tci_tx_audio_client) {
-				pthread_mutex_lock(&tx_buffer_mutex);
-				if (verbose >= 2)
-					buf_start = CircularBuffer(0, &sample, 0, 0);
+				n = 0;
 				switch (TxChrono.format) {
 				case TCI_INT16:
 					break;
 				case TCI_FLOAT32:
-					// Version 1.4 does not return the number of channels. We assume two channels.
-					// pt->length is the number of floats in WSJT-X.
+					// pt->length is the number of floats
 					while (vpt < vpt_end && count < pt->length) {
 						re = *(float *)vpt;
 						vpt += sizeof(float);
@@ -484,22 +587,20 @@ static void onmessage(ws_cli_conn_t client, const unsigned char *msg, uint64_t s
 						else {
 							im = re;
 						}
-						sample = (re + I * im) * (CLIP32 / 2);
-						CircularBuffer(0, &sample, 0, 1);
+						cCopy[n++] = (re + I * im) * (CLIP32 / 2);
 					}
 					if (verbose && count != pt->length)
 						QuiskPrintf("TCI *TX count %ld %d %d\n", size, count, pt->length);
+					n = interpolate_tx_audio_stream(cCopy, n, ctx);
+					pthread_mutex_lock(&tx_buffer_mutex);
+					CircularBuffer(0, cCopy, 0, n);
+					pthread_mutex_unlock(&tx_buffer_mutex);
 					break;
 				}
-				if (verbose >= 2) {
-					buf_end = CircularBuffer(0, &sample, 0, 0);
-					QuiskPrintf("TCI Tx buffer add %4d start %5d end %5d\n", count, buf_start, buf_end);
-				}
-				pthread_mutex_unlock(&tx_buffer_mutex);
 			}
 		}
 		if (verbose)
-			PrintStream((const char *)msg, size);
+			PrintStream((const char *)msg, size, 0);

 	}

@@ -529,11 +630,60 @@ static void tci_startup(void)
 	return;
 }

+static int decimate_audio_stream(complex double * cSamples, int nSamples, struct ClientData * ctx)
+{
+	switch(ctx->audio_stream_samplerate) {		// Starting audio rate is 48000
+		case 48000:
+			break;
+		case 24000:
+			nSamples = quisk_cDecimate(cSamples, nSamples, &ctx->filtDecim48to24, 2);
+			break;
+		case 12000:
+			nSamples = quisk_cDecim2HB45(cSamples, nSamples, &ctx->HalfBand1);
+			nSamples = quisk_cDecimate(cSamples, nSamples, &ctx->filtDecim48to24, 2);
+			break;
+		case 8000:
+			nSamples = quisk_cDecim2HB45(cSamples, nSamples, &ctx->HalfBand1);
+			nSamples = quisk_cDecimate(cSamples, nSamples, &ctx->filtDecim3, 3);
+			break;
+		default:
+			nSamples = 0;
+			break;
+	}
+	return nSamples;
+}
+
+static int interpolate_tx_audio_stream(complex double * cSamples, int nSamples, struct ClientData * ctx)
+{
+	switch(tci_tx_audio_rate) {		// Ending audio rate is 48000
+		case 48000:
+			break;
+		case 24000:
+			nSamples = quisk_cInterp2HB45(cSamples, nSamples, &ctx->HalfBandTx1);
+			break;
+		case 12000:
+			nSamples = quisk_cInterp2HB45(cSamples, nSamples, &ctx->HalfBandTx1);
+			nSamples = quisk_cInterp2HB45(cSamples, nSamples, &ctx->HalfBandTx2);
+			break;
+		case 8000:
+			nSamples = quisk_cInterpolate(cSamples, nSamples, &ctx->filtTxInterp3, 3);
+			nSamples = quisk_cInterp2HB45(cSamples, nSamples, &ctx->HalfBandTx1);
+			break;
+		default:
+			nSamples = 0;
+			break;
+	}
+	return nSamples;
+}
+
 void tci_send_audio(complex double * cSamples, int nSamples)	// called from the sound thread
 {
 	int i, n;
 	struct _Stream stream;
 	struct ClientData * ctx;
+	static complex double * cCopy = NULL;
+	static int cCopy_size = 0;
+	complex double * cAudio;

 	if (tci_clients_count <= 0)
 		return;
@@ -555,15 +705,29 @@ void tci_send_audio(complex double * cSamples, int nSamples)	// called from the
 		int bytes_per_sample = ctx->audio_stream_bytes_per_sample;
 		void * vpt = &stream.data;
 		void * vpt_end = vpt + TCI_STREAM_DATA_BYTES;
+		if (ctx->audio_stream_samplerate != 48000) {	// decimation must not change cSamples
+			if (cCopy_size < nSamples) {
+				if (cCopy)
+					free(cCopy);
+				cCopy_size = nSamples * 2;
+				cCopy = (complex double *)malloc(cCopy_size * sizeof(complex double));
+			}
+			memcpy(cCopy, cSamples, nSamples * sizeof(complex double));
+			nSamples = decimate_audio_stream(cCopy, nSamples, ctx);
+			cAudio = cCopy;
+		}
+		else {
+			cAudio = cSamples;
+		}
 		switch (ctx->audio_stream_sample_type) {
 		case TCI_FLOAT32:
 			stream.length = 0;	// make a frame
 			for (i = 0; i < nSamples; i++) {
-				*(float *)vpt = (float)(creal(cSamples[i]) * (1.0 / 2147483648.0 / 2));
+				*(float *)vpt = (float)(creal(cAudio[i]) * (1.0 / 2147483648.0 / 2));
 				vpt += bytes_per_sample;
 				stream.length++;
 				if (two_channels) {
-					*(float *)vpt = (float)(cimag(cSamples[i]) * (1.0 / 2147483648.0 / 2));
+					*(float *)vpt = (float)(cimag(cAudio[i]) * (1.0 / 2147483648.0 / 2));
 					vpt += bytes_per_sample;
 					stream.length++;
 				}
@@ -571,6 +735,7 @@ void tci_send_audio(complex double * cSamples, int nSamples)	// called from the
 					sendframe_bin(tci_clients_list[n], (const char *)&stream,
 						(16 * sizeof(uint32_t) + stream.length * bytes_per_sample));
 					stream.length = 0;
+					vpt = &stream.data;
 				}
 			}
 			break;
@@ -579,6 +744,58 @@ void tci_send_audio(complex double * cSamples, int nSamples)	// called from the
 	pthread_mutex_unlock(&clients_list_mutex);
 }

+void tci_send_iq(complex double * cSamples, int nSamples)	// called from the sound thread
+{
+	int i, n;
+	struct _Stream stream;
+	struct ClientData * ctx;
+
+	if (tci_clients_count <= 0)
+		return;
+
+	if (nSamples <= 0)
+		return;
+
+	pthread_mutex_lock(&clients_list_mutex);
+	for (n = 0; n < tci_clients_count; n++) {
+		ctx = ws_get_connection_context(tci_clients_list[n]);
+		if (ctx->send_IQ_stream == 0)
+			continue;
+		memset(&stream, 0, 16 * sizeof(uint32_t));
+		stream.sample_rate = ctx->IQ_stream_samplerate;
+		stream.format = ctx->audio_stream_sample_type;
+		stream.type = IQ_STREAM;
+		stream.channels = 2;
+		int bytes_per_sample = ctx->audio_stream_bytes_per_sample;
+		void * vpt = &stream.data;
+		void * vpt_end = vpt + TCI_STREAM_DATA_BYTES;
+		int original_length = nSamples;
+		switch (ctx->audio_stream_sample_type) {
+		case TCI_FLOAT32:
+			stream.length = 0;	// make a frame
+			for (i = 0; i < nSamples; i++) {
+				*(float *)vpt = (float)(creal(cSamples[i]) * (1.0 / 2147483648.0 / 2));
+				vpt += bytes_per_sample;
+				stream.length++;
+				*(float *)vpt = (float)(cimag(cSamples[i]) * (1.0 / 2147483648.0 / 2));
+				vpt += bytes_per_sample;
+				stream.length++;
+				if (vpt >= vpt_end || i == nSamples - 1) {
+					sendframe_bin(tci_clients_list[n], (const char *)&stream,
+						(16 * sizeof(uint32_t) + stream.length * bytes_per_sample));
+					original_length -= stream.length / 2;
+					stream.length = 0;
+					vpt = &stream.data;
+				}
+			}
+			break;
+		}
+		if (verbose && original_length != 0)
+			QuiskPrintf("Error in tci_send_iq: Samples remain %d\n", original_length);
+	}
+	pthread_mutex_unlock(&clients_list_mutex);
+}
+
 int tci_get_mic(complex double * cSamples, int mic_count)	// called from the sound thread
 {
 	if (tci_tx_audio_client) {
@@ -608,16 +825,17 @@ int tci_get_mic(complex double * cSamples, int mic_count)	// called from the sou
 PyObject * quisk_tci_set_params(PyObject * self, PyObject * args, PyObject * keywds)	// called from the GUI thread
 {  /* Call with keyword arguments ONLY.
      Sent from Quisk when parameters change. Broadcast the change to clients.*/
-	static char * kwlist[] = {"start", "verbose", "tci_dds", "tci_if", "tci_vfo", "tci_trx", "tci_split_enable",
+	static char * kwlist[] = {"start", "close", "verbose", "tci_dds", "tci_if", "tci_vfo", "tci_trx", "tci_split_enable",
 		"tci_modulation", NULL} ;
 	long long new_vfo=-1;
 	long long new_dds=-1;
-	int start=-1, new_if=-1, new_trx=-1, new_split_enable=-1;
+	int start=-1, close=-1, new_trx=-1, new_split_enable=-1;
+	int new_if = BAD_TCI_IF;
 	char * mode=NULL;
 	char char_buf[TCI_COMMAND_SIZE];

-	if (!PyArg_ParseTupleAndKeywords (args, keywds, "|iiLiLiis", kwlist,
-			&start, &verbose, &new_dds, &new_if, &new_vfo, &new_trx, &new_split_enable,
+	if (!PyArg_ParseTupleAndKeywords (args, keywds, "|iiiLiLiis", kwlist,
+			&start, &close, &verbose, &new_dds, &new_if, &new_vfo, &new_trx, &new_split_enable,
 			&mode))
 		return NULL;
 	if (start == 1) {
@@ -628,6 +846,19 @@ PyObject * quisk_tci_set_params(PyObject * self, PyObject * args, PyObject * key
 		Py_INCREF (Py_None);
 		return Py_None;
 	}
+	if (close != -1) {
+		sendframe_txt_bcast(tci_port, "stop;");
+	}
+	if (new_dds != -1) {
+		quisk_dds = new_dds;
+		snprintf(char_buf, TCI_COMMAND_SIZE, "dds:0,%lld;", quisk_dds);
+		sendframe_txt_bcast(tci_port, char_buf);
+	}
+	if (new_if != BAD_TCI_IF) {
+		quisk_if = new_if;
+		snprintf(char_buf, TCI_COMMAND_SIZE, "if:0,0,%d;", quisk_if);
+		sendframe_txt_bcast(tci_port, char_buf);
+	}
 	if (new_vfo != -1) {
 		quisk_vfo = new_vfo;
 		snprintf(char_buf, TCI_COMMAND_SIZE, "vfo:0,0,%lld;", quisk_vfo);
@@ -683,6 +914,10 @@ PyObject * quisk_tci_get_params(PyObject * self, PyObject * args)	// called from

 	if (!PyArg_ParseTuple (args, "s", &name))
 		return NULL;
+
+	if (strcmp(name, "tci_clients_count") == 0)
+		return PyLong_FromLong(tci_clients_count);
+
 	if (tci_started == 0) {
 	}
 	else if (strcmp(name, "tci_vfo") == 0 && client_vfo >= 0) {
@@ -690,6 +925,16 @@ PyObject * quisk_tci_get_params(PyObject * self, PyObject * args)	// called from
 		client_vfo = -1;
 		return PyLong_FromLongLong(ll);
 	}
+	else if (strcmp(name, "tci_dds") == 0 && client_dds >= 0) {
+		ll = client_dds;
+		client_dds = -1;
+		return PyLong_FromLongLong(ll);
+	}
+	else if (strcmp(name, "tci_if") == 0 && client_if != BAD_TCI_IF) {
+		ii = client_if;
+		client_if = BAD_TCI_IF;
+		return PyLong_FromLong(ii);
+	}
 	else if (strcmp(name, "tci_split_enable") == 0 && client_split_enable >= 0) {
 		ii = client_split_enable;
 		client_split_enable = -1;
@@ -718,7 +963,7 @@ PyObject * quisk_tci_get_params(PyObject * self, PyObject * args)	// called from
 			strcpy(char_buf, "FM");
 		client_modulation[0] = 0;
 		if (char_buf[0])
-			return PyString_FromString(char_buf);
+			return PyUnicode_FromString(char_buf);
 	}
 	Py_INCREF (Py_None);
 	return Py_None;
@@ -0,0 +1,2 @@
+This directory has files for the SDR-1000 clone synthesizer by
+UT3MK and US5NCJ
@@ -0,0 +1 @@
+#
@@ -0,0 +1,523 @@
+# -*- coding: utf-8 -*-
+
+
+from __future__ import print_function
+import serial, time, logging
+import re
+import _quisk as QS
+import quisk_conf_defaults as conf
+import sys, wx, traceback
+
+
+# ── ПОСЛЕДОВАТЕЛЬНЫЙ ПОРТ ДЛЯ CAT ───────────────────────────────────
+sdr1000_serial_port = "/dev/ttyUSB0"  # Windows: "COM3"  /  Linux: "/dev/ttyUSB0"
+sdr1000_serial_rate = 57600          # PowerSDR CAT: до 115200
+
+# ── ЛОГ ────────────────────────────────────────────────────────────
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s  %(levelname)-5s  %(message)s",
+    datefmt="%H:%M:%S",
+)
+log = logging.getLogger("SDR1000")
+
+Mode2Index = {'CWL':0, 'CWU':1, 'LSB':2, 'USB':3, 'AM':4,
+      'FM':5, 'EXT':6, 'DGT-U':7, 'DGT-L':8, 'DGT-IQ':9,
+      'IMD':10, 'FDV-U':11, 'FDV-L':12, 'DGT-FM':13}
+
+# ── КЛАСС УПРАВЛЕНИЯ ЖЕЛЕЗОМ ────────────────────────────────────────
+from quisk_hardware_model import Hardware as BaseHardware
+
+class Hardware(BaseHardware):
+    """
+    Quisk Hardware-класс для FlexRadio SDR-1000.
+    Использует CAT-команды протокола PowerSDR (ZZ + Kenwood).
+    """
+    # Буфер для приема данных с com-порта
+    serialbuf = '';
+
+    # Буфер для отправки команд на com-порт
+    cmdbuf = '';
+
+    # Буфер отправки IF
+    statusbuf ='';
+    statussending = False;
+
+    # Сопоставление размера шагов
+    STEP_MAP =  {
+        '1':   '0000', '10':  '0001', '50':  '1000', '100':  '0010',
+        '250': '1001', '500': '1010', '1k':  '0011', '5k':   '1011',
+        '9k':  '1100', '10k': '0100', '100k':'0101', '1M':   '0110',
+        '10M': '0111',
+    }
+
+    STEP_VAL = {
+        '1':    1,
+        '10':   10,
+        '50':   50,
+        '100':  100,
+        '250':  250,
+        '500':  500,
+        '1k':   1000,
+        '5k':   5000,
+        '9k':   9000,
+        '10k':  10000,
+        '100k': 100000,
+        '1M':   1000000,
+        '10M':  10000000,
+    }
+
+    # STEP_ENA = ['1', '10', '50', '100', '250', '500', '1k', '5k', '10k', '100k' ]
+    STEP_ENA = [ '10', '50', '100', '250', '500', '1k', '5k', '10k', '100k' ]
+
+    BAND_ENA = ['80', '40', '30', '20', '17', '15', '12', '10']
+
+    watchdog = 0
+    watchdog_limit = 100
+
+    # Сопоставление режимов Quisk → код MD (PowerSDR/Kenwood)
+    # TODO
+    
+    MODE_MAP = {
+        'LSB':  '1',  'USB':  '2',  'CWU':   '3',  'FM':  '4',
+        'AM':   '5',  'DGT-L':  '6',  'CWL':  '7',  
+        # Quisk-специфичные → стандартные
+        'DGT-U':'2', 'FMN':  '4',  'AMN': '5',
+        'DGT-FM':  '4',  'FDV-U':'2',  'FDV-L':'1',
+        'FSK' : '9', 'FSKR' : '2', 
+    }
+
+    def __init__(self, app, conf):
+        BaseHardware.__init__(self, app, conf)
+        self.ser = None
+        self.current_freq = 0
+        self.current_vfo = 0
+        self.current_mode = 'USB'
+        self.current_band = '80'
+        self.current_step = '50'
+        self.rf_gain_labels = ('RF -20', 'RF -10', 'RF 0', 'RF +10' )
+        self.current_pre = 0
+        self.current_ritfreq = 0
+        self.rit_active = False
+        self.ptt_active = False
+
+    # ── Открытие/закрытие ────────────────────────────────────────────
+
+    def open(self):
+        """Вызывается один раз при старте Quisk."""
+
+        try:
+            self.ser = serial.Serial(
+                sdr1000_serial_port,
+                sdr1000_serial_rate,
+                timeout=0, xonxoff=True,
+            )
+            log.debug("SDR-1000: COM-порт открыт %s @ %d",
+                     sdr1000_serial_port, sdr1000_serial_rate)
+        except serial.SerialException as e:
+            log.error("SDR-1000: не удалось открыть порт: %s", e)
+            self.ser = None
+            return "SDR-1000: ошибка порта %s" % sdr1000_serial_port
+
+        msg = "SDR-1000 подключен (%s, %s)" % (
+            sdr1000_serial_port, "PowerSDR")
+        return msg
+
+    def close(self):
+        """Вызывается один раз при завершении Quisk."""
+        if self.ptt_active:
+            self.ser.cmdbuf += 'RX;'     # снять передачу
+
+        if self.ser and self.ser.is_open:
+            self.cmdbuf = ''
+            self.ser.flush
+            self.ser.close()
+            log.debug("SDR-1000: порт закрыт")
+
+    # ── Низкоуровневый CAT-обмен ────────────────────────────────────
+
+    def _cat(self):
+        """
+        Вызываться будет периодически для чтения порта
+        """
+        if not self.ser or not self.ser.is_open:
+            return ""
+
+        try:
+            #self.ser.write(frame)
+            if self.ser.in_waiting > 0:
+                sdata = self.ser.read(size=self.ser.in_waiting)
+                self.serialbuf += sdata.decode('ascii')
+            else:
+                self.watchdog += 1
+            if self.watchdog > self.watchdog_limit:
+                log.debug("Watchdog! Resetting arduino")
+                self.ser.dtr = 0
+                time.sleep(0.1)
+                self.ser.dtr = 1
+                self.ser.flush
+                self.ser.close()
+                time.sleep(0.1)
+                try:
+                    self.ser = serial.Serial(
+                    sdr1000_serial_port,
+                    sdr1000_serial_rate,
+                    timeout=0, xonxoff=True,
+                    )
+                    log.debug("SDR-1000: COM-порт открыт %s @ %d",
+                    sdr1000_serial_port, sdr1000_serial_rate)
+                except serial.SerialException as e:
+                    log.error("SDR-1000: не удалось открыть порт: %s", e)
+                    self.ser = None
+                    return "SDR-1000: ошибка порта %s" % sdr1000_serial_port
+                self.ser.flushInput()
+                self.ser.flushOutput()
+                self.watchdog = 0
+
+
+            ans = ''
+            while ';' in self.serialbuf:
+                cmds = self.serialbuf.partition(';')
+
+                cmd = cmds[0]
+                self.serialbuf = cmds[-1]
+                # log.info("Splitted to %s and %s", cmd, self.serialbuf)
+                if len(cmd) > 0:
+                    answer = ''
+                    cmddone = 0
+                    match cmd:
+                        case 'IF':
+                            # Запрос полного статуса
+                            # Возврат в statusbuf
+                            self.statusbuf = self.ReturnInfo()
+                            log.debug("Status refresh, buf: %s", self.serialbuf)
+                            cmddone = 1
+                        case 'ZZSM0':
+                            # Запрос показаний S-метра
+                            ans = self.ReturnSmeterA()
+                            log.debug("S-meter refresh, buf: %s", ans)
+                            cmddone = 1
+                        case 'PS1':
+                            # Включение
+                            ans = 'PS1;'
+                            log.debug("PowerON, buf: %s", ans)
+                            cmddone = 1
+                        case 'ZZPA':
+                            # Запрос показаний PRE ! TODO смена режима
+                            ans = self.ReturnPre()
+                            log.debug("PRE answer, buf: %s", ans)
+                            cmddone = 1
+                        case 'UP':
+                            # Запрос на увеличение частоты
+                            self.application.ChangeHwFrequency(9000,
+                                self.current_vfo+self.STEP_VAL[self.current_step])
+                            cmddone = 1
+                        case 'DN':
+                            # Запрос на уменьшение частоты
+                            self.application.ChangeHwFrequency(9000,
+                                self.current_vfo-self.STEP_VAL[self.current_step])
+                            cmddone = 1
+                        case 'ZZSU':
+                            # Запрос на увеличение шага
+                            self.StepInc()
+                            cmddone = 1
+                        case 'ZZSD':
+                            # Запрос на уменьшение шага
+                            self.StepDec()
+                            cmddone = 1
+                        case 'BU':
+                            # Запрос смены диапазона
+                            self.BandUp()
+                            cmddone = 1
+                        case 'BD':
+                            # Запрос смены диапазона
+                            self.BandDn()
+                            cmddone = 1
+                        case 'TX':
+                            # Transmit
+                            QS.set_PTT(1)
+                            self.ptt_active = True
+                            log.info("PTT ON")
+                            cmddone = 1
+                        case 'RX':
+                            # Recieve
+                            QS.set_PTT(0)
+                            self.ptt_active = False
+                            log.info("PTT OFF")
+                            cmddone = 1
+                            
+                        case 'ZZQR':
+                            # Запрос восстановление QuickSave
+                            cmddone = 1
+
+                    if len(cmd) > 4 and not cmddone:
+                        log.debug("Try to match cmd: %s, buf: %s", cmd[0:4], self.serialbuf)
+                        match cmd[0:4]:
+                            case 'ZZPA':
+                                # Запрос изменения PRE
+                                self.SetPre(cmd)
+                                ans = self.ReturnPre()
+                                log.debug("PRE set, buf: %s", ans)
+                                cmddone = 1
+                            case 'ZZMD':
+                                # Запрос изменения режима
+                                self.SetMode(cmd)
+                                log.debug("Mode set, buf: %s", cmd)
+                                cmddone = 1
+                            case 'FA00':
+                                # Запрос изменения частоты
+                                self.SetFreq(cmd)
+                                log.debug("Freq set, buf: %s", cmd)
+                                cmddone = 1
+                    if not cmddone:
+                        log.info("unknown cmd: %s, buf: %s", cmd, self.serialbuf)
+                        ans = '?;'
+                    if len(ans) > 0:
+                        log.debug("Sending answer, buf: %s", ans)
+                        self.ser.write(ans.encode('ascii'))
+
+            if len(self.serialbuf) == 0:
+                if len(self.cmdbuf) > 0:
+                    cmds = self.cmdbuf.partition(';')
+                    cmd = cmds[0]
+                    self.cmdbuf = cmds[-1]
+                    log.debug("Sending cmd %s, buf: %s", cmd, self.cmdbuf)
+                    self.ser.write(cmd.encode('ascii'))
+            if (len(self.statusbuf) > 0) and not self.statussending:
+                self.statussending = True
+                log.debug("Sending status, buf: %s", self.statusbuf)
+                self.ser.write(self.statusbuf.encode('ascii'))
+                self.statusbuf = ''
+                self.statussending = False
+
+        # End of CAT
+        except Exception as e:
+            log.error("SDR-1000 CAT error: %s", e)
+            return ""
+
+    @staticmethod
+    def _fmt_freq(hz):
+        """Частота → 11 цифр: 14200000 → '00014200000'."""
+        return "%011d" % int(hz)
+
+    # ── Quisk API: частота ──────────────────────────────────────────
+
+    def ChangeFrequency(self, tune, vfo, source='', band='', event=None):
+        """Quisk вызывает при смене частоты. Возвращает (tune, vfo)."""
+        if tune and tune != self.current_freq:
+            self.current_freq = tune
+            self.current_vfo = tune-9000
+            if re.search('FA\\d{11};', self.cmdbuf,0):
+                log.debug("--> RE MATCH")
+                re.sub('FA\\d{11};', "FA" + self._fmt_freq(tune)+";", self.cmdbuf, 1)
+            # self.cmdbuf += ("FA" + self._fmt_freq(tune)+";")
+            else:
+                self.cmdbuf += ("FA" + self._fmt_freq(tune)+";")
+            log.debug("VFO A → %d Hz (%.6f MHz)", self.current_vfo, self.current_freq / 1e6)
+        return self.current_freq, self.current_vfo
+
+    def ReturnInfo(self):
+        ritstr = self.application.ritFreq
+        if ritstr >= 0:
+            ritsign = "+"
+        else:
+            ritsign = ""
+        answer = "IF%011d%4s%s%05d%01d0000%01d%1s0000000;" % (
+            self.current_freq, self.STEP_MAP[self.current_step],
+            ritsign,ritstr,self.application.ritButton.GetValue(),
+            self.ptt_active,self.MODE_MAP[self.current_mode])
+        # log.info(answer)
+        return answer
+
+    def ReturnSmeterA(self):
+        i = round((self.application.smeter_db + 67) * 2)
+        if i < 0:
+            i = 0
+        elif i > 260:
+            i = 260
+        answer = "ZZSM0%03d;" % ( i )
+        # log.info(answer)
+        return answer
+
+    def ReturnPre(self):
+        answer = "ZZPA%01d;" % ( self.current_pre )
+        return answer
+
+    def SetPre(self, precmd):
+        if len(precmd) == 5:
+            match precmd:
+                case 'ZZPA0': i = 0
+                case 'ZZPA1': i = 1
+                case 'ZZPA2': i = 2
+                case 'ZZPA3': i = 3
+                case _: i = 0
+            self.current_pre = i
+
+    def SetFreq(self, freqcmd):
+        if len(freqcmd) == 13:
+            newfreq = int(freqcmd[2:])
+            log.info("Request to change freq: %d", newfreq)
+            self.current_vfo=newfreq-9000
+            self.application.ChangeHwFrequency(9000, self.current_vfo)
+    
+    def OnButtonRfGain(self, event):
+        btn = event.GetEventObject()
+        n = btn.index
+        self.current_pre = n
+        self.cmdbuf += ("ZZPA%1d;" % self.current_pre)
+        
+    def SetMode(self, modecmd):
+        if len(modecmd) == 6:
+            log.info("Request to change mode: %s", modecmd[4:])
+            match modecmd[4:]:
+                
+                # 00 = LSB  =>  LSB
+                # 01 = USB  =>  USB
+                # 02 = DSB  =>  USB
+                # 03 = CWL  =>  CW
+                # 04 = CWU  =>  CW
+                # 05 = FMN  =>  FMN
+                # 06 = AM   =>  AM
+                # 07 = DIGU =>  FSKR
+                # 08 = SPEC =>  AMN
+                # 09 = DIGL =>  FSK
+                # 10 = SAM  =>  USB
+                # 11 = DRM  =>  USB
+                
+                case '00': newmode = 'LSB'
+                case '01': newmode = 'USB'
+                case '02': newmode = 'USB'
+                case '03': newmode = 'CWL'
+                case '04': newmode = 'CWU'
+                case '05': newmode = 'FM'
+                case '06': newmode = 'AM'
+                case '07': newmode = 'DGT-U'
+                case '08': newmode = 'AM'
+                case '09': newmode = 'DGT-L'
+                case '10': newmode = 'USB'
+                case '11': newmode = 'USB'
+                case _: newmode = 'USB'
+            self.current_mode = newmode
+            self.application.mode = self.current_mode
+            self.application.MakeFilterButtons(self.application.Mode2Filters(self.current_mode))
+            QS.set_rx_mode(Mode2Index.get(self.current_mode, 3))
+            if self.current_mode == 'CWL':
+                self.application.SetRit(conf.cwTone)
+            elif self.current_mode == 'CWU':
+                self.application.SetRit(-conf.cwTone)
+            else:
+                self.application.SetRit(0)
+            if self.current_mode in ('CWL', 'CWU'):
+                self.application.SetFilterByMode('CW')
+            elif self.current_mode in ('LSB', 'USB'):
+                self.application.SetFilterByMode('SSB')
+            elif self.current_mode == 'AM':
+                self.application.SetFilterByMode('AM')
+            elif self.current_mode[0:2] == 'FM':
+                self.application.SetFilterByMode('FM')
+            elif self.current_mode[0:4] == 'DGT-':
+                self.application.SetFilterByMode('DGT')
+            self.application.sliderSquelch.DeleteSliderWindow()
+            
+            if self.current_mode == 'FM':
+                self.application.sliderSquelch.SetSlider(self.application.levelSquelch)
+            else:
+                self.application.sliderSquelch.SetSlider(self.application.levelSquelchSSB)
+            self.application.OnBtnSquelch()
+            if self.current_mode not in ('FDV-L', 'FDV-U'):
+                self.application.graph.SetDisplayMsg()
+                self.application.waterfall.SetDisplayMsg()
+            self.application.SetTxAudio()
+            
+    def StepInc(self):
+        i = self.STEP_ENA.index(self.current_step)
+        log.debug("Found index of %s, idx: %d", self.current_step, i)
+        if i < (len(self.STEP_ENA)-1):
+            self.current_step = self.STEP_ENA[i + 1]
+            log.debug("Step changed to %s, idx: %d", self.current_step, i+1)
+        else: 
+            log.debug("Step not changed, remain %s", self.current_step)
+
+
+    def StepDec(self):
+        i = self.STEP_ENA.index(self.current_step)
+        log.info("Found index of %s, idx: %d", self.current_step, i)
+        if i > 0:
+            self.current_step = self.STEP_ENA[i - 1]
+            log.debug("Step changed to %s, idx: %d", self.current_step, i-1)
+        else: 
+            log.debug("Step not changed, remain %s", self.current_step)
+
+    def BandUp(self):
+        i = self.BAND_ENA.index(self.current_band)
+        log.debug("Found index of %s, idx: %d", self.current_band, i)
+        if i < (len(self.BAND_ENA)-1):
+            self.current_band = self.BAND_ENA[i + 1]
+        else:
+            self.current_band = self.BAND_ENA[0]
+        log.info("Band changed to %s, idx: %d", self.current_band, i)
+        vfo, tune, mode = self.application.bandState[self.current_band]
+        self.application.ChangeHwFrequency(9000, vfo+tune)
+
+    def BandDn(self):
+        i = self.BAND_ENA.index(self.current_band)
+        log.debug("Found index of %s, idx: %d", self.current_band, i)
+        if i > 0:
+            self.current_band = self.BAND_ENA[i - 1]
+        else:
+            self.current_band = self.BAND_ENA[len(self.BAND_ENA)-1]
+        log.info("Band changed to %s, idx: %d", self.current_band, i)
+        vfo, tune, mode = self.application.bandState[self.current_band]
+        self.application.ChangeHwFrequency(9000, vfo+tune)
+
+    def ReturnFrequency(self):
+        """Опрос ~10 Гц. Возвращает (tune, vfo) или (None, None)."""
+        # SDR-1000 не сообщает частоту сам, поэтому возвращаем None
+        return None, None
+
+    # ── Quisk API: режим ─────────────────────────────────────────────
+
+    def ChangeMode(self, mode):
+        """Quisk вызывает при смене режима. mode: 'USB', 'CW', и т.д."""
+        # Нормализуем DGT-* → USB
+        # if mode.startswith('DGT'):
+        #     mode = 'USB'
+        code = self.MODE_MAP.get(mode)
+        if not code:
+            log.warning("Неизвестный режим Quisk: %s → по умолчанию USB", mode)
+            code = '2'
+        self.cmdbuf += ("MD" + code+';')
+        self.current_mode = mode
+        log.debug("Режим → %s (MD%s)", mode, code)
+
+    # ── Quisk API: диапазон ─────────────────────────────────────────
+
+    def ChangeBand(self, band):
+        """Quisk вызывает при смене диапазона. band: '160', '80', …"""
+        BaseHardware.ChangeBand(self, band)
+        log.info("Диапазон → %s м", band)
+
+    # ── Quisk API: PTT ──────────────────────────────────────────────
+
+    def OnButtonPTT(self, event=None):
+        """Quisk вызывает при нажатии/отпускании PTT."""
+        if event:
+            self.ptt_active = bool(event.GetEventObject().GetValue())
+        #self._cat("ZZTX%d" % (1 if self.ptt_active else 0))
+        log.debug("PTT %s", "ON" if self.ptt_active else "OFF")
+
+    # ── Quisk API: HeartBeat (~10 Гц) ───────────────────────────────
+
+    def HeartBeat(self):
+        """Периодический опрос — можно использовать для синхронизации."""
+        self._cat()
+
+    def FastHeartBeat(self):    # Called frequently by the GUI thread
+        pass
+
+    # ── Quisk API: TUNE ─────────────────────────────────────────────
+
+    def OnBtnFDX(self, is_fdx):
+        """Кнопка FDX (полный дуплекс)."""
+        log.debug("FDX → %s", is_fdx)
+        
@@ -6,6 +6,7 @@
 #include <sys/time.h>
 #endif
 #include <complex.h>
+#include <string.h>
 #include "quisk.h"

 // Access to config file attributes.
@@ -71,40 +72,27 @@ double QuiskGetConfigDouble(const char * name, double deflt)

 char * QuiskGetConfigString(const char * name, char * deflt)
 {  // Return the UTF-8 configuration string. Return deflt for failure.
-  char * res;
-  PyObject * attr;
-#if PY_MAJOR_VERSION < 3
-  static char retbuf[QUISK_SC_SIZE];
-#endif
+	Py_ssize_t size;

-  if (!quisk_pyConfig || PyErr_Occurred())
-    return deflt;
-  attr = PyObject_GetAttrString(quisk_pyConfig, name);
-  if (attr) {
-#if PY_MAJOR_VERSION >= 3
-    res = (char *)PyUnicode_AsUTF8(attr);
-#else
-    if (PyUnicode_Check(attr)) {
-      PyObject * pystr = PyUnicode_AsUTF8String(attr);
-      strMcpy(retbuf, PyString_AsString(pystr), QUISK_SC_SIZE);
-      retbuf[QUISK_SC_SIZE - 1] = 0;
-      res = retbuf;
-      Py_DECREF(pystr);
-    }
-    else {
-      res = PyString_AsString(attr);
-    }
-#endif
-    Py_DECREF(attr);
-    if (res)
-      return res;		// success
-    else
-      PyErr_Clear();
-  }
-  else {
-    PyErr_Clear();
-  }
-  return deflt;		// failure
+	if (!quisk_pyConfig || PyErr_Occurred())
+		return deflt;		// failure
+	PyObject * attr = PyObject_GetAttrString(quisk_pyConfig, name);
+	if ( ! attr) {
+		PyErr_Clear();
+		return deflt;		// failure
+	}
+	if ( ! PyUnicode_Check(attr)) {
+		Py_DECREF(attr);
+		return deflt;		// failure
+	}
+	const char * utf8_str = PyUnicode_AsUTF8AndSize(attr, &size);
+	if ( ! utf8_str) {
+		Py_DECREF(attr);
+		PyErr_Clear();
+		return deflt;		// failure
+	}
+	Py_DECREF(attr);
+	return (char *)utf8_str;
 }

 double QuiskTimeSec(void)
Author	SHA1	Message	Date
James C. Ahlstrom	c2085a8160	Remove wheel tester.	2026-10-27 17:05:25 -04:00
James C. Ahlstrom	2b6b6fa9ea	Merge branch 'master' of github.com:jimahlstrom/quisk Merge mouse wheel logic.	2026-10-27 16:58:05 -04:00
James C. Ahlstrom	36210d4e4c	Request by Jaroslav, OK2JRQ: alternate docs directory.	2026-10-27 16:56:09 -04:00
jimahlstrom	eb9434c52a	Merge pull request #4 from prof7bit/fix-wheel-steps Fix symmetric mouse wheel tuning steps. Thanks to Bernd, DD4UG.	2026-10-27 16:49:51 -04:00
Bernd	db928b6fcb	Fix symmetric mouse wheel tuning steps	2026-10-24 13:45:22 +02:00
jimahlstrom	a90f8b80bd	Merge pull request #3 from argusSecurityBot/fix-bounds-checks-and-leak Fix out-of-bounds accesses and a leak in quisk.c and afedrinet_io.c	2026-10-22 16:13:49 -04:00
argusSecurityBot	faaeda54e5	Fix out-of-bounds accesses and a leak in quisk.c and afedrinet_io.c - afedrinet_io.c open_rx_udp: use snprintf so a long ip string cannot overflow the 128-byte stack buffer. - quisk.c set_multirx_mode, set_multirx_freq: reject a negative index. - quisk.c set_multirx_play_channel: treat a negative channel like an out-of-range one. - quisk.c measure_freq: keep ipeak inside [1, fft_size - 2] so that fft_average[ipeak - 1] and fft_average[ipeak + 1] stay in bounds when no peak is found. - quisk.c record_app: free the previous multirx_fft_next_samples buffer before allocating a new one, like fft_window and current_graph.	2026-10-20 16:46:24 +00:00
James C. Ahlstrom	c2304b23ee	Minor correction to UT3MK radio	2026-10-19 13:43:22 -04:00
jimahlstrom	09154658ae	Merge pull request #2 from zxalexis/master Added UT3MK SDR radios	2026-10-19 13:22:35 -04:00
James C. Ahlstrom	20bd313041	Correction to makefile	2026-10-19 13:00:09 -04:00
zx	d39722b170	Added UT3MK SDR radios	2026-10-18 22:02:37 +03:00
James C. Ahlstrom	c97ffa155e	Quisk version 4.2.55	2026-10-12 13:37:47 -04:00
jimahlstrom	745882a506	Add README for Quisk Software Defined Radio Added introductory information about Quisk software defined radio, including its features and support links.	2026-09-27 16:19:11 -04:00
James C. Ahlstrom	674bbad1ab	fix non-ascii char in setup.py	2026-08-20 14:08:21 -04:00
James C. Ahlstrom	67c6fbcad9	Quisk version 4.2.54	2026-08-04 12:01:45 -04:00
James C. Ahlstrom	84e194c644	Quisk version 4.2.53	2026-06-30 17:06:52 -04:00