##################################################
# GNU Radio Python Flow Graph
# Title: Stereo FM receiver and RDS Decoder
# Generated: Sat Aug 22 13:10:16 2015
##################################################
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 digital
from gnuradio import digital;import cmath
from gnuradio import eng_notation
from gnuradio import filter
from gnuradio import gr
from gnuradio import uhd
from gnuradio import wxgui
from gnuradio.eng_option import eng_option
from gnuradio.fft import window
from gnuradio.filter import firdes
from gnuradio.wxgui import fftsink2
from gnuradio.wxgui import forms
from gnuradio.wxgui import scopesink2
from gnuradio.wxgui import waterfallsink2
from grc_gnuradio import wxgui as grc_wxgui
from optparse import OptionParser
import math
import rds
import time
import wx
class rds_rx(grc_wxgui.top_block_gui):
def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="Stereo FM receiver and RDS Decoder")
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 1000000
self.bb_decim = bb_decim = 4
self.freq_offset = freq_offset = 250000
self.freq = freq = 97e6
self.baseband_rate = baseband_rate = samp_rate/bb_decim
self.audio_decim = audio_decim = 5
self.xlate_bandwidth = xlate_bandwidth = 100000
self.volume = volume = 0
self.gain = gain = 20
self.freq_tune = freq_tune = freq - freq_offset
self.audio_rate = audio_rate = 48000
self.audio_decim_rate = audio_decim_rate = baseband_rate/audio_decim
##################################################
# Blocks
##################################################
_volume_sizer = wx.BoxSizer(wx.VERTICAL)
self._volume_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_volume_sizer,
value=self.volume,
callback=self.set_volume,
label="Volume",
converter=forms.float_converter(),
proportion=0,
)
self._volume_slider = forms.slider(
parent=self.GetWin(),
sizer=_volume_sizer,
value=self.volume,
callback=self.set_volume,
minimum=-20,
maximum=10,
num_steps=300,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_volume_sizer, 0, 1, 1, 1)
self.nb = self.nb = wx.Notebook(self.GetWin(), style=wx.NB_TOP)
self.nb.AddPage(grc_wxgui.Panel(self.nb), "BB")
self.nb.AddPage(grc_wxgui.Panel(self.nb), "Demod")
self.nb.AddPage(grc_wxgui.Panel(self.nb), "L+R")
self.nb.AddPage(grc_wxgui.Panel(self.nb), "Pilot")
self.nb.AddPage(grc_wxgui.Panel(self.nb), "DSBSC")
self.nb.AddPage(grc_wxgui.Panel(self.nb), "RDS")
self.nb.AddPage(grc_wxgui.Panel(self.nb), "L-R")
self.nb.AddPage(grc_wxgui.Panel(self.nb), "RDS constellation")
self.nb.AddPage(grc_wxgui.Panel(self.nb), "Waterfall")
self.GridAdd(self.nb, 2, 0, 1, 2)
_freq_sizer = wx.BoxSizer(wx.VERTICAL)
self._freq_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_freq_sizer,
value=self.freq,
callback=self.set_freq,
label="Freq",
converter=forms.float_converter(),
proportion=0,
)
self._freq_slider = forms.slider(
parent=self.GetWin(),
sizer=_freq_sizer,
value=self.freq,
callback=self.set_freq,
minimum=88.1e6,
maximum=107.9e6,
num_steps=99,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_freq_sizer, 1, 0, 1, 2)
self.wxgui_waterfallsink2_0 = waterfallsink2.waterfall_sink_f(
self.nb.GetPage(8).GetWin(),
baseband_freq=0,
dynamic_range=100,
ref_level=0,
ref_scale=2.0,
sample_rate=baseband_rate,
fft_size=512,
fft_rate=15,
average=False,
avg_alpha=None,
title="Waterfall Plot",
)
self.nb.GetPage(8).Add(self.wxgui_waterfallsink2_0.win)
self.wxgui_scopesink2_1 = scopesink2.scope_sink_c(
self.nb.GetPage(7).GetWin(),
title="Scope Plot",
sample_rate=2375,
v_scale=0.4,
v_offset=0,
t_scale=0,
ac_couple=False,
xy_mode=True,
num_inputs=1,
trig_mode=wxgui.TRIG_MODE_AUTO,
y_axis_label="Counts",
)
self.nb.GetPage(7).Add(self.wxgui_scopesink2_1.win)
self.wxgui_scopesink2_0 = scopesink2.scope_sink_f(
self.nb.GetPage(3).GetWin(),
title="Pilot",
sample_rate=baseband_rate,
v_scale=0,
v_offset=0,
t_scale=0,
ac_couple=False,
xy_mode=False,
num_inputs=1,
trig_mode=wxgui.TRIG_MODE_AUTO,
y_axis_label="Counts",
)
self.nb.GetPage(3).Add(self.wxgui_scopesink2_0.win)
self.wxgui_fftsink2_0_0_0_1_0_1 = fftsink2.fft_sink_c(
self.nb.GetPage(5).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=audio_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="RDS",
peak_hold=False,
)
self.nb.GetPage(5).Add(self.wxgui_fftsink2_0_0_0_1_0_1.win)
self.wxgui_fftsink2_0_0_0_1_0_0 = fftsink2.fft_sink_f(
self.nb.GetPage(6).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=-50,
ref_scale=2.0,
sample_rate=baseband_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="L-R",
peak_hold=False,
)
self.nb.GetPage(6).Add(self.wxgui_fftsink2_0_0_0_1_0_0.win)
self.wxgui_fftsink2_0_0_0_1 = fftsink2.fft_sink_f(
self.nb.GetPage(4).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=baseband_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="DSBSC Sub-carrier",
peak_hold=False,
)
self.nb.GetPage(4).Add(self.wxgui_fftsink2_0_0_0_1.win)
self.wxgui_fftsink2_0_0_0 = fftsink2.fft_sink_f(
self.nb.GetPage(2).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=audio_decim_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="L+R",
peak_hold=False,
)
self.nb.GetPage(2).Add(self.wxgui_fftsink2_0_0_0.win)
self.wxgui_fftsink2_0_0 = fftsink2.fft_sink_f(
self.nb.GetPage(1).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=baseband_rate,
fft_size=1024,
fft_rate=15,
average=True,
avg_alpha=0.8,
title="FM Demod",
peak_hold=False,
)
self.nb.GetPage(1).Add(self.wxgui_fftsink2_0_0.win)
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.nb.GetPage(0).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=-30,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=True,
avg_alpha=0.8,
title="Baseband",
peak_hold=False,
)
self.nb.GetPage(0).Add(self.wxgui_fftsink2_0.win)
self.uhd_usrp_source_0 = uhd.usrp_source(
",".join(("", "")),
uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.uhd_usrp_source_0.set_samp_rate(samp_rate)
self.uhd_usrp_source_0.set_center_freq(freq_tune, 0)
self.uhd_usrp_source_0.set_gain(0, 0)
self.uhd_usrp_source_0.set_antenna("TX/RX", 0)
self.root_raised_cosine_filter_0 = filter.fir_filter_ccf(1, firdes.root_raised_cosine(
1, samp_rate/bb_decim/audio_decim, 2375, 1, 100))
self.rational_resampler_xxx_0_0 = filter.rational_resampler_fff(
interpolation=audio_rate,
decimation=audio_decim_rate,
taps=None,
fractional_bw=None,
)
self.rational_resampler_xxx_0 = filter.rational_resampler_fff(
interpolation=audio_rate,
decimation=audio_decim_rate,
taps=None,
fractional_bw=None,
)
self.gr_rds_parser_0 = rds.parser(True, False)
self.gr_rds_panel_0 = rds.rdsPanel(freq, self.GetWin())
self.Add(self.gr_rds_panel_0.panel)
self.gr_rds_decoder_0 = rds.decoder(False, False)
_gain_sizer = wx.BoxSizer(wx.VERTICAL)
self._gain_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_gain_sizer,
value=self.gain,
callback=self.set_gain,
label="RF Gain",
converter=forms.float_converter(),
proportion=0,
)
self._gain_slider = forms.slider(
parent=self.GetWin(),
sizer=_gain_sizer,
value=self.gain,
callback=self.set_gain,
minimum=0,
maximum=49.6,
num_steps=124,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_gain_sizer, 0, 0, 1, 1)
self.freq_xlating_fir_filter_xxx_1 = filter.freq_xlating_fir_filter_fcc(audio_decim, (firdes.low_pass(2500.0,baseband_rate,2.4e3,2e3,firdes.WIN_HAMMING)), 57e3, baseband_rate)
self.freq_xlating_fir_filter_xxx_0 = filter.freq_xlating_fir_filter_ccc(1, (firdes.low_pass(1, samp_rate, xlate_bandwidth, 100000)), freq_offset, samp_rate)
self.fir_filter_xxx_5 = filter.fir_filter_fff(audio_decim, (firdes.low_pass(1.0,baseband_rate,20e3,40e3,firdes.WIN_HAMMING)))
self.fir_filter_xxx_5.declare_sample_delay(0)
self.fir_filter_xxx_3 = filter.fir_filter_fff(1, (firdes.band_pass(1.0,baseband_rate,38e3-13e3,38e3+13e3,3e3,firdes.WIN_HAMMING)))
self.fir_filter_xxx_3.declare_sample_delay(0)
self.fir_filter_xxx_2 = filter.fir_filter_fcc(1, (firdes.complex_band_pass(1.0,baseband_rate,19e3-500,19e3+500,1e3,firdes.WIN_HAMMING)))
self.fir_filter_xxx_2.declare_sample_delay(0)
self.fir_filter_xxx_1 = filter.fir_filter_fff(audio_decim, (firdes.low_pass(1.0,baseband_rate,13e3,3e3,firdes.WIN_HAMMING)))
self.fir_filter_xxx_1.declare_sample_delay(0)
self.digital_mpsk_receiver_cc_0 = digital.mpsk_receiver_cc(2, 0, 1*cmath.pi/100.0, -0.06, 0.06, 0.5, 0.05, samp_rate/bb_decim/audio_decim/ 2375.0, 0.001, 0.005)
self.digital_diff_decoder_bb_0 = digital.diff_decoder_bb(2)
self.digital_binary_slicer_fb_0 = digital.binary_slicer_fb()
self.blocks_sub_xx_0 = blocks.sub_ff(1)
self.blocks_multiply_xx_1 = blocks.multiply_vcc(1)
self.blocks_multiply_xx_0 = blocks.multiply_vff(1)
self.blocks_multiply_const_vxx_0_0 = blocks.multiply_const_vff((10**(1.*(volume+15)/10), ))
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vff((10**(1.*(volume+15)/10), ))
self.blocks_keep_one_in_n_0 = blocks.keep_one_in_n(gr.sizeof_char*1, 2)
self.blocks_complex_to_real_0 = blocks.complex_to_real(1)
self.blocks_complex_to_imag_0 = blocks.complex_to_imag(1)
self.blocks_add_xx_0 = blocks.add_vff(1)
self.audio_sink_0 = audio.sink(audio_rate, "", True)
self.analog_wfm_rcv_0 = analog.wfm_rcv(
quad_rate=samp_rate,
audio_decimation=bb_decim,
)
self.analog_pll_refout_cc_0 = analog.pll_refout_cc(0.001, 2 * math.pi * (19000+200) / baseband_rate, 2 * math.pi * (19000-200) / baseband_rate)
self.analog_fm_deemph_0_0_0 = analog.fm_deemph(fs=audio_decim_rate, tau=75e-6)
self.analog_fm_deemph_0_0 = analog.fm_deemph(fs=audio_decim_rate, tau=75e-6)
##################################################
# Connections
##################################################
self.msg_connect((self.gr_rds_decoder_0, 'out'), (self.gr_rds_parser_0, 'in'))
self.msg_connect((self.gr_rds_parser_0, 'out'), (self.gr_rds_panel_0, 'in'))
self.connect((self.analog_fm_deemph_0_0, 0), (self.blocks_multiply_const_vxx_0_0, 0))
self.connect((self.analog_fm_deemph_0_0_0, 0), (self.blocks_multiply_const_vxx_0, 0))
self.connect((self.analog_pll_refout_cc_0, 0), (self.blocks_multiply_xx_1, 1))
self.connect((self.analog_pll_refout_cc_0, 0), (self.blocks_multiply_xx_1, 0))
self.connect((self.analog_wfm_rcv_0, 0), (self.fir_filter_xxx_1, 0))
self.connect((self.analog_wfm_rcv_0, 0), (self.fir_filter_xxx_2, 0))
self.connect((self.analog_wfm_rcv_0, 0), (self.fir_filter_xxx_3, 0))
self.connect((self.analog_wfm_rcv_0, 0), (self.freq_xlating_fir_filter_xxx_1, 0))
self.connect((self.analog_wfm_rcv_0, 0), (self.wxgui_fftsink2_0_0, 0))
self.connect((self.analog_wfm_rcv_0, 0), (self.wxgui_waterfallsink2_0, 0))
self.connect((self.blocks_add_xx_0, 0), (self.analog_fm_deemph_0_0_0, 0))
self.connect((self.blocks_complex_to_imag_0, 0), (self.blocks_multiply_xx_0, 1))
self.connect((self.blocks_complex_to_imag_0, 0), (self.wxgui_scopesink2_0, 0))
self.connect((self.blocks_complex_to_real_0, 0), (self.digital_binary_slicer_fb_0, 0))
self.connect((self.blocks_keep_one_in_n_0, 0), (self.digital_diff_decoder_bb_0, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0), (self.rational_resampler_xxx_0, 0))
self.connect((self.blocks_multiply_const_vxx_0_0, 0), (self.rational_resampler_xxx_0_0, 0))
self.connect((self.blocks_multiply_xx_0, 0), (self.fir_filter_xxx_5, 0))
self.connect((self.blocks_multiply_xx_0, 0), (self.wxgui_fftsink2_0_0_0_1_0_0, 0))
self.connect((self.blocks_multiply_xx_1, 0), (self.blocks_complex_to_imag_0, 0))
self.connect((self.blocks_sub_xx_0, 0), (self.analog_fm_deemph_0_0, 0))
self.connect((self.digital_binary_slicer_fb_0, 0), (self.blocks_keep_one_in_n_0, 0))
self.connect((self.digital_diff_decoder_bb_0, 0), (self.gr_rds_decoder_0, 0))
self.connect((self.digital_mpsk_receiver_cc_0, 0), (self.blocks_complex_to_real_0, 0))
self.connect((self.digital_mpsk_receiver_cc_0, 0), (self.wxgui_scopesink2_1, 0))
self.connect((self.fir_filter_xxx_1, 0), (self.blocks_add_xx_0, 0))
self.connect((self.fir_filter_xxx_1, 0), (self.blocks_sub_xx_0, 0))
self.connect((self.fir_filter_xxx_1, 0), (self.wxgui_fftsink2_0_0_0, 0))
self.connect((self.fir_filter_xxx_2, 0), (self.analog_pll_refout_cc_0, 0))
self.connect((self.fir_filter_xxx_3, 0), (self.blocks_multiply_xx_0, 0))
self.connect((self.fir_filter_xxx_3, 0), (self.wxgui_fftsink2_0_0_0_1, 0))
self.connect((self.fir_filter_xxx_5, 0), (self.blocks_add_xx_0, 1))
self.connect((self.fir_filter_xxx_5, 0), (self.blocks_sub_xx_0, 1))
self.connect((self.freq_xlating_fir_filter_xxx_0, 0), (self.analog_wfm_rcv_0, 0))
self.connect((self.freq_xlating_fir_filter_xxx_0, 0), (self.wxgui_fftsink2_0, 0))
self.connect((self.freq_xlating_fir_filter_xxx_1, 0), (self.root_raised_cosine_filter_0, 0))
self.connect((self.freq_xlating_fir_filter_xxx_1, 0), (self.wxgui_fftsink2_0_0_0_1_0_1, 0))
self.connect((self.rational_resampler_xxx_0, 0), (self.audio_sink_0, 0))
self.connect((self.rational_resampler_xxx_0_0, 0), (self.audio_sink_0, 1))
self.connect((self.root_raised_cosine_filter_0, 0), (self.digital_mpsk_receiver_cc_0, 0))
self.connect((self.uhd_usrp_source_0, 0), (self.freq_xlating_fir_filter_xxx_0, 0))
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.set_baseband_rate(self.samp_rate/self.bb_decim)
self.digital_mpsk_receiver_cc_0.set_omega(self.samp_rate/self.bb_decim/self.audio_decim/ 2375.0)
self.freq_xlating_fir_filter_xxx_0.set_taps((firdes.low_pass(1, self.samp_rate, self.xlate_bandwidth, 100000)))
self.root_raised_cosine_filter_0.set_taps(firdes.root_raised_cosine(1, self.samp_rate/self.bb_decim/self.audio_decim, 2375, 1, 100))
self.uhd_usrp_source_0.set_samp_rate(self.samp_rate)
self.wxgui_fftsink2_0.set_sample_rate(self.samp_rate)
def get_bb_decim(self):
return self.bb_decim
def set_bb_decim(self, bb_decim):
self.bb_decim = bb_decim
self.set_baseband_rate(self.samp_rate/self.bb_decim)
self.digital_mpsk_receiver_cc_0.set_omega(self.samp_rate/self.bb_decim/self.audio_decim/ 2375.0)
self.root_raised_cosine_filter_0.set_taps(firdes.root_raised_cosine(1, self.samp_rate/self.bb_decim/self.audio_decim, 2375, 1, 100))
def get_freq_offset(self):
return self.freq_offset
def set_freq_offset(self, freq_offset):
self.freq_offset = freq_offset
self.set_freq_tune(self.freq - self.freq_offset)
self.freq_xlating_fir_filter_xxx_0.set_center_freq(self.freq_offset)
def get_freq(self):
return self.freq
def set_freq(self, freq):
self.freq = freq
self._freq_slider.set_value(self.freq)
self._freq_text_box.set_value(self.freq)
self.set_freq_tune(self.freq - self.freq_offset)
self.gr_rds_panel_0.set_frequency(self.freq);
def get_baseband_rate(self):
return self.baseband_rate
def set_baseband_rate(self, baseband_rate):
self.baseband_rate = baseband_rate
self.set_audio_decim_rate(self.baseband_rate/self.audio_decim)
self.analog_pll_refout_cc_0.set_max_freq(2 * math.pi * (19000+200) / self.baseband_rate)
self.analog_pll_refout_cc_0.set_min_freq(2 * math.pi * (19000-200) / self.baseband_rate)
self.fir_filter_xxx_1.set_taps((firdes.low_pass(1.0,self.baseband_rate,13e3,3e3,firdes.WIN_HAMMING)))
self.fir_filter_xxx_2.set_taps((firdes.complex_band_pass(1.0,self.baseband_rate,19e3-500,19e3+500,1e3,firdes.WIN_HAMMING)))
self.fir_filter_xxx_3.set_taps((firdes.band_pass(1.0,self.baseband_rate,38e3-13e3,38e3+13e3,3e3,firdes.WIN_HAMMING)))
self.fir_filter_xxx_5.set_taps((firdes.low_pass(1.0,self.baseband_rate,20e3,40e3,firdes.WIN_HAMMING)))
self.freq_xlating_fir_filter_xxx_1.set_taps((firdes.low_pass(2500.0,self.baseband_rate,2.4e3,2e3,firdes.WIN_HAMMING)))
self.wxgui_fftsink2_0_0.set_sample_rate(self.baseband_rate)
self.wxgui_fftsink2_0_0_0_1.set_sample_rate(self.baseband_rate)
self.wxgui_fftsink2_0_0_0_1_0_0.set_sample_rate(self.baseband_rate)
self.wxgui_scopesink2_0.set_sample_rate(self.baseband_rate)
self.wxgui_waterfallsink2_0.set_sample_rate(self.baseband_rate)
def get_audio_decim(self):
return self.audio_decim
def set_audio_decim(self, audio_decim):
self.audio_decim = audio_decim
self.set_audio_decim_rate(self.baseband_rate/self.audio_decim)
self.digital_mpsk_receiver_cc_0.set_omega(self.samp_rate/self.bb_decim/self.audio_decim/ 2375.0)
self.root_raised_cosine_filter_0.set_taps(firdes.root_raised_cosine(1, self.samp_rate/self.bb_decim/self.audio_decim, 2375, 1, 100))
def get_xlate_bandwidth(self):
return self.xlate_bandwidth
def set_xlate_bandwidth(self, xlate_bandwidth):
self.xlate_bandwidth = xlate_bandwidth
self.freq_xlating_fir_filter_xxx_0.set_taps((firdes.low_pass(1, self.samp_rate, self.xlate_bandwidth, 100000)))
def get_volume(self):
return self.volume
def set_volume(self, volume):
self.volume = volume
self._volume_slider.set_value(self.volume)
self._volume_text_box.set_value(self.volume)
self.blocks_multiply_const_vxx_0.set_k((10**(1.*(self.volume+15)/10), ))
self.blocks_multiply_const_vxx_0_0.set_k((10**(1.*(self.volume+15)/10), ))
def get_gain(self):
return self.gain
def set_gain(self, gain):
self.gain = gain
self._gain_slider.set_value(self.gain)
self._gain_text_box.set_value(self.gain)
def get_freq_tune(self):
return self.freq_tune
def set_freq_tune(self, freq_tune):
self.freq_tune = freq_tune
self.uhd_usrp_source_0.set_center_freq(self.freq_tune, 0)
def get_audio_rate(self):
return self.audio_rate
def set_audio_rate(self, audio_rate):
self.audio_rate = audio_rate
self.wxgui_fftsink2_0_0_0_1_0_1.set_sample_rate(self.audio_rate)
def get_audio_decim_rate(self):
return self.audio_decim_rate
def set_audio_decim_rate(self, audio_decim_rate):
self.audio_decim_rate = audio_decim_rate
self.wxgui_fftsink2_0_0_0.set_sample_rate(self.audio_decim_rate)
if __name__ == '__main__':
parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
(options, args) = parser.parse_args()
tb = rds_rx()
tb.Start(True)
tb.Wait()
Hi Mike,
dashed only means "message port connection" rather than "item stream", so that's nothing to worry about, usually.
So the bad news is that this is possible a GRC bug, which on the other hand is good news, because it means that gr-rds isn't broken, GRC just has a hard time correctly generating the python file.
Since that worked for me: can you try the attached python file?
Best regards,
Marcus
On 22.08.2015 11:26, Michael Thelen DK4MT wrote:
Hi, I am using GNU Radio 3.7.7.2 and I checked out out and built gr-rds. However RDS Decoding is not working. I found that there are to two connections have dashed lines (see picture). And in the terminal all I get is Error: Cannot create connection. But I could not find a hint, what is going wrong. Can somebody tell me, what to check for? Best regards, Mike
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