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ssbreceive.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# SPDX-License-Identifier: GPL-3.0
#
# GNU Radio Python Flow Graph
# Title: ssb receive
# GNU Radio version: 3.8.1.0
from distutils.version import StrictVersion
if __name__ == '__main__':
import ctypes
import sys
if sys.platform.startswith('linux'):
try:
x11 = ctypes.cdll.LoadLibrary('libX11.so')
x11.XInitThreads()
except:
print("Warning: failed to XInitThreads()")
from gnuradio import analog
from gnuradio import audio
from gnuradio import blocks
from gnuradio import filter
from gnuradio.filter import firdes
from gnuradio import gr
import sys
import signal
from PyQt5 import Qt
from argparse import ArgumentParser
from gnuradio.eng_arg import eng_float, intx
from gnuradio import eng_notation
from gnuradio.qtgui import Range, RangeWidget
import osmosdr
import time
from gnuradio import qtgui
class ssbreceive(gr.top_block, Qt.QWidget):
def __init__(self):
gr.top_block.__init__(self, "ssb receive")
Qt.QWidget.__init__(self)
self.setWindowTitle("ssb receive")
qtgui.util.check_set_qss()
try:
self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
except:
pass
self.top_scroll_layout = Qt.QVBoxLayout()
self.setLayout(self.top_scroll_layout)
self.top_scroll = Qt.QScrollArea()
self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
self.top_scroll_layout.addWidget(self.top_scroll)
self.top_scroll.setWidgetResizable(True)
self.top_widget = Qt.QWidget()
self.top_scroll.setWidget(self.top_widget)
self.top_layout = Qt.QVBoxLayout(self.top_widget)
self.top_grid_layout = Qt.QGridLayout()
self.top_layout.addLayout(self.top_grid_layout)
self.settings = Qt.QSettings("GNU Radio", "ssbreceive")
try:
if StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
self.restoreGeometry(self.settings.value("geometry").toByteArray())
else:
self.restoreGeometry(self.settings.value("geometry"))
except:
pass
##################################################
# Variables
##################################################
self.center_freq = center_freq = 144500000
self.tune_range = tune_range = 960000/2
self.samp_rate = samp_rate = 960000
self.fine_tune = fine_tune = 0
self.channel_freq = channel_freq = center_freq
self.audio_rate = audio_rate = 32000
##################################################
# Blocks
##################################################
self._fine_tune_range = Range(-500, 500, 10, 0, 200)
self._fine_tune_win = RangeWidget(self._fine_tune_range, self.set_fine_tune, 'Clarify', "counter_slider", float)
self.top_grid_layout.addWidget(self._fine_tune_win)
self._channel_freq_range = Range(center_freq-tune_range, center_freq+tune_range, 500, center_freq, 200)
self._channel_freq_win = RangeWidget(self._channel_freq_range, self.set_channel_freq, 'Tune', "counter_slider", float)
self.top_grid_layout.addWidget(self._channel_freq_win)
self.rtlsdr_source_0 = osmosdr.source(
args="numchan=" + str(1) + " " + ""
)
self.rtlsdr_source_0.set_sample_rate(samp_rate)
self.rtlsdr_source_0.set_center_freq(center_freq, 0)
self.rtlsdr_source_0.set_freq_corr(10, 0)
self.rtlsdr_source_0.set_gain(0, 0)
self.rtlsdr_source_0.set_if_gain(20, 0)
self.rtlsdr_source_0.set_bb_gain(20, 0)
self.rtlsdr_source_0.set_antenna('', 0)
self.rtlsdr_source_0.set_bandwidth(0, 0)
self.low_pass_filter_0 = filter.fir_filter_ccf(
30,
firdes.low_pass(
5,
samp_rate,
3000,
3000,
firdes.WIN_HAMMING,
6.76))
self.blocks_sub_xx_0 = blocks.sub_ff(1)
self.blocks_null_sink_0 = blocks.null_sink(gr.sizeof_float*1)
self.blocks_multiply_xx_0_0_0 = blocks.multiply_vff(1)
self.blocks_multiply_xx_0_0 = blocks.multiply_vff(1)
self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_ff(10)
self.blocks_divide_xx_0 = blocks.divide_ff(1)
self.blocks_complex_to_magphase_0 = blocks.complex_to_magphase(1)
self.blocks_complex_to_float_0_0 = blocks.complex_to_float(1)
self.blocks_complex_to_float_0 = blocks.complex_to_float(1)
self.blocks_add_const_vxx_0 = blocks.add_const_ff(1)
self.audio_sink_0 = audio.sink(audio_rate, '', True)
self.analog_sig_source_x_1 = analog.sig_source_c(audio_rate, analog.GR_SIN_WAVE, 1500, .5, 0, 0)
self.analog_sig_source_x_0 = analog.sig_source_c(samp_rate, analog.GR_SIN_WAVE, center_freq - channel_freq - fine_tune, 1, 0, 0)
self.analog_agc2_xx_0 = analog.agc2_cc(.00005, .00005, .3, 1.0)
self.analog_agc2_xx_0.set_max_gain(1)
##################################################
# Connections
##################################################
self.connect((self.analog_agc2_xx_0, 0), (self.low_pass_filter_0, 0))
self.connect((self.analog_sig_source_x_0, 0), (self.blocks_multiply_xx_0, 1))
self.connect((self.analog_sig_source_x_1, 0), (self.blocks_complex_to_float_0_0, 0))
self.connect((self.blocks_add_const_vxx_0, 0), (self.blocks_divide_xx_0, 1))
self.connect((self.blocks_complex_to_float_0, 1), (self.blocks_multiply_xx_0_0, 0))
self.connect((self.blocks_complex_to_float_0, 0), (self.blocks_multiply_xx_0_0_0, 0))
self.connect((self.blocks_complex_to_float_0_0, 1), (self.blocks_multiply_xx_0_0, 1))
self.connect((self.blocks_complex_to_float_0_0, 0), (self.blocks_multiply_xx_0_0_0, 1))
self.connect((self.blocks_complex_to_magphase_0, 0), (self.blocks_multiply_const_vxx_0, 0))
self.connect((self.blocks_complex_to_magphase_0, 1), (self.blocks_null_sink_0, 0))
self.connect((self.blocks_divide_xx_0, 0), (self.audio_sink_0, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0), (self.blocks_add_const_vxx_0, 0))
self.connect((self.blocks_multiply_xx_0, 0), (self.analog_agc2_xx_0, 0))
self.connect((self.blocks_multiply_xx_0_0, 0), (self.blocks_sub_xx_0, 1))
self.connect((self.blocks_multiply_xx_0_0_0, 0), (self.blocks_sub_xx_0, 0))
self.connect((self.blocks_sub_xx_0, 0), (self.blocks_divide_xx_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.blocks_complex_to_float_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.blocks_complex_to_magphase_0, 0))
self.connect((self.rtlsdr_source_0, 0), (self.blocks_multiply_xx_0, 0))
def closeEvent(self, event):
self.settings = Qt.QSettings("GNU Radio", "ssbreceive")
self.settings.setValue("geometry", self.saveGeometry())
event.accept()
def get_center_freq(self):
return self.center_freq
def set_center_freq(self, center_freq):
self.center_freq = center_freq
self.set_channel_freq(self.center_freq)
self.analog_sig_source_x_0.set_frequency(self.center_freq - self.channel_freq - self.fine_tune)
self.rtlsdr_source_0.set_center_freq(self.center_freq, 0)
def get_tune_range(self):
return self.tune_range
def set_tune_range(self, tune_range):
self.tune_range = tune_range
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.analog_sig_source_x_0.set_sampling_freq(self.samp_rate)
self.low_pass_filter_0.set_taps(firdes.low_pass(5, self.samp_rate, 3000, 3000, firdes.WIN_HAMMING, 6.76))
self.rtlsdr_source_0.set_sample_rate(self.samp_rate)
def get_fine_tune(self):
return self.fine_tune
def set_fine_tune(self, fine_tune):
self.fine_tune = fine_tune
self.analog_sig_source_x_0.set_frequency(self.center_freq - self.channel_freq - self.fine_tune)
def get_channel_freq(self):
return self.channel_freq
def set_channel_freq(self, channel_freq):
self.channel_freq = channel_freq
self.analog_sig_source_x_0.set_frequency(self.center_freq - self.channel_freq - self.fine_tune)
def get_audio_rate(self):
return self.audio_rate
def set_audio_rate(self, audio_rate):
self.audio_rate = audio_rate
self.analog_sig_source_x_1.set_sampling_freq(self.audio_rate)
def main(top_block_cls=ssbreceive, options=None):
if StrictVersion("4.5.0") <= StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
style = gr.prefs().get_string('qtgui', 'style', 'raster')
Qt.QApplication.setGraphicsSystem(style)
qapp = Qt.QApplication(sys.argv)
tb = top_block_cls()
tb.start()
tb.show()
def sig_handler(sig=None, frame=None):
Qt.QApplication.quit()
signal.signal(signal.SIGINT, sig_handler)
signal.signal(signal.SIGTERM, sig_handler)
timer = Qt.QTimer()
timer.start(500)
timer.timeout.connect(lambda: None)
def quitting():
tb.stop()
tb.wait()
qapp.aboutToQuit.connect(quitting)
qapp.exec_()
if __name__ == '__main__':
main()