def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="FHSS Packets")
##################################################
# Variables
##################################################
self.samp_sym = samp_sym = 64
self.samp_rate = samp_rate = 800000
self.init = init = 1, 1, 1, 1
self.generator = generator = 1, 1, 0, 0, 1
self.code_rate = code_rate = int(1389 * samp_sym)
##################################################
# Blocks
##################################################
self.wxgui_fftsink2_0_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="Received Spread Spectrum Signal",
peak_hold=False,
)
self.Add(self.wxgui_fftsink2_0_0.win)
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="Despread Signal",
peak_hold=False,
)
self.Add(self.wxgui_fftsink2_0.win)
self.low_pass_filter_0 = filter.fir_filter_ccf(1, firdes.low_pass(
1, samp_rate, 11000, 1000, firdes.WIN_HAMMING, 6.76))
self.digital_gmsk_mod_0 = digital.gmsk_mod(
samples_per_symbol=samp_sym,
bt=0.35,
verbose=False,
log=False,
)
self.digital_gmsk_demod_0 = digital.gmsk_demod(
samples_per_symbol=samp_sym,
gain_mu=0.175,
mu=0.5,
omega_relative_limit=0.005,
freq_error=0.0,
verbose=False,
log=False,
)
self.channels_channel_model_0 = channels.channel_model(
noise_voltage=0.01,
frequency_offset=1 / samp_rate,
epsilon=1 + 0.000001,
taps=(1.0 + 1.0j, ),
noise_seed=0,
block_tags=False
)
self.blocks_unpacked_to_packed_xx_0 = blocks.unpacked_to_packed_bb(1, gr.GR_MSB_FIRST)
self.Spread_synthesizer_0 = Spread.synthesizer(code_rate, 0, samp_rate, (generator), (init))
self.Spread_sync_0 = Spread.sync()
self.Spread_rx_synthesizer_0 = Spread.rx_synthesizer(code_rate,
samp_sym,
samp_rate,
11000,
10000,
0.01,
(generator),
(init))
self.Spread_rx_sync_0 = Spread.rx_sync(12)
self.Spread_msg_source_0 = Spread.msg_source(500, 100)
self.Spread_framer_0 = Spread.framer(0)
self.Spread_deframer_0 = Spread.deframer(0)
##################################################
# Connections
##################################################
self.connect((self.Spread_synthesizer_0, 0), (self.channels_channel_model_0, 0))
self.connect((self.channels_channel_model_0, 0), (self.Spread_rx_synthesizer_0, 0))
self.connect((self.digital_gmsk_demod_0, 0), (self.Spread_rx_sync_0, 0))
self.connect((self.digital_gmsk_mod_0, 0), (self.Spread_synthesizer_0, 0))
self.connect((self.blocks_unpacked_to_packed_xx_0, 0), (self.digital_gmsk_mod_0, 0))
self.connect((self.Spread_sync_0, 0), (self.blocks_unpacked_to_packed_xx_0, 0))
self.connect((self.channels_channel_model_0, 0), (self.wxgui_fftsink2_0_0, 0))
self.connect((self.Spread_rx_synthesizer_0, 0), (self.low_pass_filter_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.wxgui_fftsink2_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.digital_gmsk_demod_0, 0))
##################################################
# Asynch Message Connections
##################################################
self.msg_connect(self.Spread_framer_0, "out", self.Spread_sync_0, "in")
self.msg_connect(self.Spread_msg_source_0, "out", self.Spread_framer_0, "in")
self.msg_connect(self.Spread_rx_sync_0, "out", self.Spread_deframer_0, "in")
def __init__(self):
grc_wxgui.top_block_gui.__init__(
self, title="Direct-sequence spread spectrum")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
##################################################
# Variables
##################################################
self.variable_constellation_0 = variable_constellation_0 = digital.constellation_calcdist(
([-1, 1]), ([0, 1]), 2, 1).base()
self.samp_sym = samp_sym = 32
self.samp_rate = samp_rate = 500e3
self.samp_chip = samp_chip = 2
self.init = init = 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
self.generator = generator = 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1
##################################################
# Blocks
##################################################
self.wxgui_fftsink2_0_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title='Despread Signal ',
peak_hold=False,
)
self.GridAdd(self.wxgui_fftsink2_0_0.win, 2, 3, 1, 2)
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title='Received DS Signal',
peak_hold=False,
)
self.GridAdd(self.wxgui_fftsink2_0.win, 2, 1, 1, 2)
self.digital_dxpsk_mod_0 = digital.dbpsk_mod(samples_per_symbol=2,
excess_bw=0.35,
mod_code="gray",
verbose=False,
log=False)
self.digital_dxpsk_demod_0 = digital.dbpsk_demod(samples_per_symbol=2,
excess_bw=0.35,
freq_bw=6.28 / 100.0,
phase_bw=6.28 / 100.0,
timing_bw=6.28 /
100.0,
mod_code="gray",
verbose=False,
log=False)
self.channels_channel_model_0 = channels.channel_model(
noise_voltage=0.3,
frequency_offset=0.0,
epsilon=1.0,
taps=(1.0 + 1.0j, ),
noise_seed=0,
block_tags=False)
self.blocks_unpacked_to_packed_xx_0 = blocks.unpacked_to_packed_bb(
1, gr.GR_MSB_FIRST)
self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex * 1,
samp_rate, True)
self.blocks_repeat_0 = blocks.repeat(gr.sizeof_char * 1, samp_sym)
self.blocks_keep_one_in_n_0 = blocks.keep_one_in_n(
gr.sizeof_char * 1, 32)
self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1, 1000)
self.Spread_sync_0 = Spread.sync()
self.Spread_rx_sync_0 = Spread.rx_sync(12)
self.Spread_preamble_0 = Spread.preamble_bb(1389, (64 * (1, 1)))
self.Spread_msg_source_0 = Spread.msg_source(100, 100)
self.Spread_framer_0 = Spread.framer(0)
self.Spread_ds_spreader_0 = Spread.ds_spreader(samp_chip, (generator),
(init))
self.Spread_ds_despreader_0 = Spread.ds_despreader(
samp_chip, 1024, 2045, (generator), (init))
self.Spread_deframer_0 = Spread.deframer(0)
##################################################
# Connections
##################################################
self.msg_connect((self.Spread_framer_0, 'out'),
(self.Spread_sync_0, 'in'))
self.msg_connect((self.Spread_msg_source_0, 'out'),
(self.Spread_framer_0, 'in'))
self.msg_connect((self.Spread_rx_sync_0, 'out'),
(self.Spread_deframer_0, 'in'))
self.connect((self.Spread_ds_despreader_0, 0),
(self.digital_dxpsk_demod_0, 0))
self.connect((self.Spread_ds_despreader_0, 0),
(self.wxgui_fftsink2_0_0, 0))
self.connect((self.Spread_ds_spreader_0, 0),
(self.blocks_unpacked_to_packed_xx_0, 0))
self.connect((self.Spread_preamble_0, 0), (self.blocks_repeat_0, 0))
self.connect((self.Spread_sync_0, 0), (self.Spread_preamble_0, 0))
self.connect((self.blocks_delay_0, 0), (self.blocks_throttle_0, 0))
self.connect((self.blocks_keep_one_in_n_0, 0),
(self.Spread_rx_sync_0, 0))
self.connect((self.blocks_repeat_0, 0), (self.Spread_ds_spreader_0, 0))
self.connect((self.blocks_throttle_0, 0),
(self.Spread_ds_despreader_0, 0))
self.connect((self.blocks_throttle_0, 0), (self.wxgui_fftsink2_0, 0))
self.connect((self.blocks_unpacked_to_packed_xx_0, 0),
(self.digital_dxpsk_mod_0, 0))
self.connect((self.channels_channel_model_0, 0),
(self.blocks_delay_0, 0))
self.connect((self.digital_dxpsk_demod_0, 0),
(self.blocks_keep_one_in_n_0, 0))
self.connect((self.digital_dxpsk_mod_0, 0),
(self.channels_channel_model_0, 0))
def __init__(self):
grc_wxgui.top_block_gui.__init__(self,
title="Frame / sync / deframer chain")
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 500e3
##################################################
# Blocks
##################################################
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="FFT Plot",
peak_hold=False,
)
self.Add(self.wxgui_fftsink2_0.win)
self.digital_gmsk_mod_0 = digital.gmsk_mod(
samples_per_symbol=32,
bt=0.35,
verbose=False,
log=False,
)
self.digital_gmsk_demod_0 = digital.gmsk_demod(
samples_per_symbol=32,
gain_mu=0.175,
mu=0.5,
omega_relative_limit=0.01,
freq_error=0.0,
verbose=False,
log=False,
)
self.channels_channel_model_0 = channels.channel_model(
noise_voltage=0.001,
frequency_offset=0.0,
epsilon=1.000001,
taps=(1.0 + 1.0j, ),
noise_seed=0,
block_tags=False)
self.blocks_unpacked_to_packed_xx_0 = blocks.unpacked_to_packed_bb(
1, gr.GR_MSB_FIRST)
self.blocks_throttle_0 = blocks.throttle(gr.sizeof_char * 1, samp_rate,
True)
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vcc((20, ))
self.Spread_sync_0 = Spread.sync()
self.Spread_rx_sync_0 = Spread.rx_sync(12)
self.Spread_msg_source_0 = Spread.msg_source(500, 255)
self.Spread_framer_0 = Spread.framer(0)
self.Spread_deframer_0 = Spread.deframer(0)
##################################################
# Connections
##################################################
self.connect((self.Spread_sync_0, 0), (self.blocks_throttle_0, 0))
self.connect((self.blocks_throttle_0, 0),
(self.blocks_unpacked_to_packed_xx_0, 0))
self.connect((self.blocks_unpacked_to_packed_xx_0, 0),
(self.digital_gmsk_mod_0, 0))
self.connect((self.digital_gmsk_mod_0, 0),
(self.channels_channel_model_0, 0))
self.connect((self.digital_gmsk_demod_0, 0),
(self.Spread_rx_sync_0, 0))
self.connect((self.channels_channel_model_0, 0),
(self.blocks_multiply_const_vxx_0, 0))
self.connect((self.channels_channel_model_0, 0),
(self.wxgui_fftsink2_0, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0),
(self.digital_gmsk_demod_0, 0))
##################################################
# Asynch Message Connections
##################################################
self.msg_connect(self.Spread_framer_0, "out", self.Spread_sync_0, "in")
self.msg_connect(self.Spread_msg_source_0, "out", self.Spread_framer_0,
"in")
self.msg_connect(self.Spread_rx_sync_0, "out", self.Spread_deframer_0,
"in")
def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="FHSS Packets")
##################################################
# Variables
##################################################
self.samp_sym = samp_sym = 64
self.samp_rate = samp_rate = 800000
self.init = init = 1, 1, 1, 1
self.generator = generator = 1, 1, 0, 0, 1
self.code_rate = code_rate = int(1389 * samp_sym)
##################################################
# Blocks
##################################################
self.wxgui_fftsink2_0_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="Received Spread Spectrum Signal",
peak_hold=False,
)
self.Add(self.wxgui_fftsink2_0_0.win)
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="Despread Signal",
peak_hold=False,
)
self.Add(self.wxgui_fftsink2_0.win)
self.low_pass_filter_0 = filter.fir_filter_ccf(
1,
firdes.low_pass(1, samp_rate, 11000, 1000, firdes.WIN_HAMMING,
6.76))
self.digital_gmsk_mod_0 = digital.gmsk_mod(
samples_per_symbol=samp_sym,
bt=0.35,
verbose=False,
log=False,
)
self.digital_gmsk_demod_0 = digital.gmsk_demod(
samples_per_symbol=samp_sym,
gain_mu=0.175,
mu=0.5,
omega_relative_limit=0.005,
freq_error=0.0,
verbose=False,
log=False,
)
self.channels_channel_model_0 = channels.channel_model(
noise_voltage=0.01,
frequency_offset=1 / samp_rate,
epsilon=1 + 0.000001,
taps=(1.0 + 1.0j, ),
noise_seed=0,
block_tags=False)
self.blocks_unpacked_to_packed_xx_0 = blocks.unpacked_to_packed_bb(
1, gr.GR_MSB_FIRST)
self.Spread_synthesizer_0 = Spread.synthesizer(code_rate, 0, samp_rate,
(generator), (init))
self.Spread_sync_0 = Spread.sync()
self.Spread_rx_synthesizer_0 = Spread.rx_synthesizer(
code_rate, samp_sym, samp_rate, 11000, 10000, 0.01, (generator),
(init))
self.Spread_rx_sync_0 = Spread.rx_sync(12)
self.Spread_msg_source_0 = Spread.msg_source(500, 100)
self.Spread_framer_0 = Spread.framer(0)
self.Spread_deframer_0 = Spread.deframer(0)
##################################################
# Connections
##################################################
self.connect((self.Spread_synthesizer_0, 0),
(self.channels_channel_model_0, 0))
self.connect((self.channels_channel_model_0, 0),
(self.Spread_rx_synthesizer_0, 0))
self.connect((self.digital_gmsk_demod_0, 0),
(self.Spread_rx_sync_0, 0))
self.connect((self.digital_gmsk_mod_0, 0),
(self.Spread_synthesizer_0, 0))
self.connect((self.blocks_unpacked_to_packed_xx_0, 0),
(self.digital_gmsk_mod_0, 0))
self.connect((self.Spread_sync_0, 0),
(self.blocks_unpacked_to_packed_xx_0, 0))
self.connect((self.channels_channel_model_0, 0),
(self.wxgui_fftsink2_0_0, 0))
self.connect((self.Spread_rx_synthesizer_0, 0),
(self.low_pass_filter_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.wxgui_fftsink2_0, 0))
self.connect((self.low_pass_filter_0, 0),
(self.digital_gmsk_demod_0, 0))
##################################################
# Asynch Message Connections
##################################################
self.msg_connect(self.Spread_framer_0, "out", self.Spread_sync_0, "in")
self.msg_connect(self.Spread_msg_source_0, "out", self.Spread_framer_0,
"in")
self.msg_connect(self.Spread_rx_sync_0, "out", self.Spread_deframer_0,
"in")
def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="Frame / sync / deframer chain")
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 500e3
##################################################
# Blocks
##################################################
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="FFT Plot",
peak_hold=False,
)
self.Add(self.wxgui_fftsink2_0.win)
self.digital_gmsk_mod_0 = digital.gmsk_mod(
samples_per_symbol=32,
bt=0.35,
verbose=False,
log=False,
)
self.digital_gmsk_demod_0 = digital.gmsk_demod(
samples_per_symbol=32,
gain_mu=0.175,
mu=0.5,
omega_relative_limit=0.01,
freq_error=0.0,
verbose=False,
log=False,
)
self.channels_channel_model_0 = channels.channel_model(
noise_voltage=0.001,
frequency_offset=0.0,
epsilon=1.000001,
taps=(1.0 + 1.0j, ),
noise_seed=0,
block_tags=False
)
self.blocks_unpacked_to_packed_xx_0 = blocks.unpacked_to_packed_bb(1, gr.GR_MSB_FIRST)
self.blocks_throttle_0 = blocks.throttle(gr.sizeof_char*1, samp_rate,True)
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vcc((20, ))
self.Spread_sync_0 = Spread.sync()
self.Spread_rx_sync_0 = Spread.rx_sync(12)
self.Spread_msg_source_0 = Spread.msg_source(500, 255)
self.Spread_framer_0 = Spread.framer(0)
self.Spread_deframer_0 = Spread.deframer(0)
##################################################
# Connections
##################################################
self.connect((self.Spread_sync_0, 0), (self.blocks_throttle_0, 0))
self.connect((self.blocks_throttle_0, 0), (self.blocks_unpacked_to_packed_xx_0, 0))
self.connect((self.blocks_unpacked_to_packed_xx_0, 0), (self.digital_gmsk_mod_0, 0))
self.connect((self.digital_gmsk_mod_0, 0), (self.channels_channel_model_0, 0))
self.connect((self.digital_gmsk_demod_0, 0), (self.Spread_rx_sync_0, 0))
self.connect((self.channels_channel_model_0, 0), (self.blocks_multiply_const_vxx_0, 0))
self.connect((self.channels_channel_model_0, 0), (self.wxgui_fftsink2_0, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0), (self.digital_gmsk_demod_0, 0))
##################################################
# Asynch Message Connections
##################################################
self.msg_connect(self.Spread_framer_0, "out", self.Spread_sync_0, "in")
self.msg_connect(self.Spread_msg_source_0, "out", self.Spread_framer_0, "in")
self.msg_connect(self.Spread_rx_sync_0, "out", self.Spread_deframer_0, "in")
def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="Direct-sequence spread spectrum")
##################################################
# Variables
##################################################
self.variable_constellation_0 = variable_constellation_0 = digital.constellation_calcdist(([-1, 1]), ([0, 1]), 2, 1).base()
self.samp_sym = samp_sym = 32
self.samp_rate = samp_rate = 500e3
self.samp_chip = samp_chip = 2
self.init = init = 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
self.generator = generator = 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1
##################################################
# Blocks
##################################################
self.wxgui_fftsink2_0_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="Despread Signal ",
peak_hold=False,
)
self.GridAdd(self.wxgui_fftsink2_0_0.win, 2, 3, 1, 2)
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="Received DS Signal",
peak_hold=False,
)
self.GridAdd(self.wxgui_fftsink2_0.win, 2, 1, 1, 2)
self.digital_dxpsk_mod_0 = digital.dbpsk_mod(
samples_per_symbol=2,
excess_bw=0.35,
mod_code="gray",
verbose=False,
log=False)
self.digital_dxpsk_demod_0 = digital.dbpsk_demod(
samples_per_symbol=2,
excess_bw=0.35,
freq_bw=6.28/100.0,
phase_bw=6.28/100.0,
timing_bw=6.28/100.0,
mod_code="gray",
verbose=False,
log=False
)
self.channels_channel_model_0 = channels.channel_model(
noise_voltage=0.3,
frequency_offset=0.0,
epsilon=1.0,
taps=(1.0 + 1.0j, ),
noise_seed=0,
block_tags=False
)
self.blocks_unpacked_to_packed_xx_0 = blocks.unpacked_to_packed_bb(1, gr.GR_MSB_FIRST)
self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate,True)
self.blocks_repeat_0 = blocks.repeat(gr.sizeof_char*1, samp_sym)
self.blocks_keep_one_in_n_0 = blocks.keep_one_in_n(gr.sizeof_char*1, 32)
self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex*1, 1000)
self.Spread_sync_0 = Spread.sync()
self.Spread_rx_sync_0 = Spread.rx_sync(12)
self.Spread_preamble_0 = Spread.preamble_bb(1389, (64*(1, 1)))
self.Spread_msg_source_0 = Spread.msg_source(100, 100)
self.Spread_framer_0 = Spread.framer(0)
self.Spread_ds_spreader_0 = Spread.ds_spreader(samp_chip, (generator), (init))
self.Spread_ds_despreader_0 = Spread.ds_despreader(samp_chip,
1024,
2045,
(generator),
(init))
self.Spread_deframer_0 = Spread.deframer(0)
##################################################
# Connections
##################################################
self.connect((self.blocks_throttle_0, 0), (self.Spread_ds_despreader_0, 0))
self.connect((self.blocks_throttle_0, 0), (self.wxgui_fftsink2_0, 0))
self.connect((self.blocks_repeat_0, 0), (self.Spread_ds_spreader_0, 0))
self.connect((self.Spread_ds_despreader_0, 0), (self.wxgui_fftsink2_0_0, 0))
self.connect((self.Spread_sync_0, 0), (self.Spread_preamble_0, 0))
self.connect((self.Spread_preamble_0, 0), (self.blocks_repeat_0, 0))
self.connect((self.channels_channel_model_0, 0), (self.blocks_delay_0, 0))
self.connect((self.blocks_delay_0, 0), (self.blocks_throttle_0, 0))
self.connect((self.Spread_ds_despreader_0, 0), (self.digital_dxpsk_demod_0, 0))
self.connect((self.digital_dxpsk_demod_0, 0), (self.blocks_keep_one_in_n_0, 0))
self.connect((self.blocks_keep_one_in_n_0, 0), (self.Spread_rx_sync_0, 0))
self.connect((self.digital_dxpsk_mod_0, 0), (self.channels_channel_model_0, 0))
self.connect((self.blocks_unpacked_to_packed_xx_0, 0), (self.digital_dxpsk_mod_0, 0))
self.connect((self.Spread_ds_spreader_0, 0), (self.blocks_unpacked_to_packed_xx_0, 0))
##################################################
# Asynch Message Connections
##################################################
self.msg_connect(self.Spread_framer_0, "out", self.Spread_sync_0, "in")
self.msg_connect(self.Spread_msg_source_0, "out", self.Spread_framer_0, "in")
self.msg_connect(self.Spread_rx_sync_0, "out", self.Spread_deframer_0, "in")