Added flowgraph

apps/flowgraphs/CMakeLists.txt

@@ -26,10 +26,11 @@ set(flowgraphs
     example_flowgraph.grc
     fsk_ax25.grc
     iq_receiver.grc
+    sstv_pd120_demod.grc
 )
 message(“Compiling GRC SatNOGS flowgraphs…”)
 foreach(grc_file ${flowgraphs})
-    
+
     message("Compiling " ${grc_file})
     execute_process(COMMAND grcc ${grc_file}
                     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
@@ -44,5 +45,6 @@ GR_PYTHON_INSTALL(
     satnogs_example_flowgraph.py
     satnogs_fsk_ax25.py
     satnogs_iq_receiver.py
+    satnogs_sstv_pd120_demod.py
     DESTINATION bin
-)
+)

apps/flowgraphs/satnogs_sstv_pd120_demod.py

@@ -0,0 +1,448 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+#
+# SPDX-License-Identifier: GPL-3.0
+#
+# GNU Radio Python Flow Graph
+# Title: SSTV PD120 decoder
+# Author: Manolis Surligas, George Vardakis, Sebastian Schumb
+# Description: SSTV PD120 decoder with automatic image synchronization
+# GNU Radio version: 3.8.0.0
+
+from gnuradio import analog
+from gnuradio import filter
+from gnuradio.filter import firdes
+from gnuradio import gr
+import sys
+import signal
+from argparse import ArgumentParser
+from gnuradio.eng_arg import eng_float, intx
+from gnuradio import eng_notation
+from gnuradio.filter import pfb
+import satnogs
+import soapy
+
+class satnogs_sstv_pd120_demod(gr.top_block):
+
+    def __init__(self, antenna='', bw=0.0, decoded_data_file_path='/tmp/.satnogs/data/data', dev_args='', doppler_correction_per_sec=20, enable_iq_dump=0, file_path='test.wav', flip_images=0, gain=0.0, iq_file_path='/tmp/iq.dat', lo_offset=100e3, rigctl_port=4532, rx_freq=100e6, samp_rate_rx=0.0, soapy_rx_device='driver=invalid', sync=1, udp_IP='127.0.0.1', udp_port=16887, waterfall_file_path='/tmp/waterfall.dat'):
+        gr.top_block.__init__(self, "SSTV PD120 decoder")
+
+        ##################################################
+        # Parameters
+        ##################################################
+        self.antenna = antenna
+        self.bw = bw
+        self.decoded_data_file_path = decoded_data_file_path
+        self.dev_args = dev_args
+        self.doppler_correction_per_sec = doppler_correction_per_sec
+        self.enable_iq_dump = enable_iq_dump
+        self.file_path = file_path
+        self.flip_images = flip_images
+        self.gain = gain
+        self.iq_file_path = iq_file_path
+        self.lo_offset = lo_offset
+        self.rigctl_port = rigctl_port
+        self.rx_freq = rx_freq
+        self.samp_rate_rx = samp_rate_rx
+        self.soapy_rx_device = soapy_rx_device
+        self.sync = sync
+        self.udp_IP = udp_IP
+        self.udp_port = udp_port
+        self.waterfall_file_path = waterfall_file_path
+
+        ##################################################
+        # Variables
+        ##################################################
+        self.intermediate_samp_rate = intermediate_samp_rate = int(4*4160*4 / 5)
+        self.audio_samp_rate = audio_samp_rate = 48000
+
+        ##################################################
+        # Blocks
+        ##################################################
+        self.soapy_source_0 = None
+        if "custom" == 'custom':
+            dev = soapy_rx_device
+        else:
+            dev = 'driver=' + "custom"
+        if "custom" == 'sdrplay':
+            f = 'if_mode=' + "Zero-IF" + ',' + 'agc_setpoint=' + str("-30") + ',' + 'biasT_ctrl=' + "True".lower() + ',' + 'rfnotch_ctrl=' + "False".lower() + ',' + 'dabnotch_ctrl=' + "False".lower() + ',' + str(dev_args)
+            f = f.replace('\"', '')
+            f = f.replace("\\'", '')
+            f = f.strip(',')
+            self.soapy_source_0 = soapy.source(1, dev, f, samp_rate_rx, "fc32")
+        else:
+            self.soapy_source_0 = soapy.source(1, dev, dev_args, samp_rate_rx, "fc32")
+
+        if 0 != 0:
+            self.soapy_source_0.set_master_clock_rate(0)
+
+        if len('') > 0:
+            self.soapy_source_0.set_clock_source('')
+
+        # Set up dc offsets
+        if "custom" != 'uhd':
+            if (self.soapy_source_0.hasDCOffset(0)):
+                self.soapy_source_0.set_dc_offset(0,0,False == 'True')
+
+            if (self.soapy_source_0.hasDCOffset(1)):
+                self.soapy_source_0.set_dc_offset(1,0,False == 'True')
+
+        # Setup IQ Balance
+        if "custom" != 'uhd':
+            if (self.soapy_source_0.hasIQBalance(0)):
+                self.soapy_source_0.set_iq_balance(0,0)
+
+            if (self.soapy_source_0.hasIQBalance(1)):
+                self.soapy_source_0.set_iq_balance(1,0)
+
+        # Setup Frequency correction
+        if (self.soapy_source_0.hasFrequencyCorrection(0)):
+            self.soapy_source_0.set_frequency_correction(0,0)
+
+        if (self.soapy_source_0.hasFrequencyCorrection(1)):
+            self.soapy_source_0.set_frequency_correction(1,0)
+
+        self.soapy_source_0.set_gain_mode(0,False)
+        self.soapy_source_0.set_gain_mode(1,False)
+
+        self.soapy_source_0.set_frequency(0, rx_freq - lo_offset)
+        self.soapy_source_0.set_frequency(1, 0)
+
+        # Made antenna sanity check more generic
+        antList = self.soapy_source_0.listAntennas(0)
+
+        if len(antList) > 1:
+            # If we have more than 1 possible antenna
+            if len(antenna) == 0 or antenna not in antList:
+                print("ERROR: Please define ant0 to an allowed antenna name.")
+                strAntList = str(antList).lstrip('(').rstrip(')').rstrip(',')
+                print("Allowed antennas: " + strAntList)
+                exit(0)
+
+            self.soapy_source_0.set_antenna(0,antenna)
+
+        if 1 > 1:
+            antList = self.soapy_source_0.listAntennas(1)
+            # If we have more than 1 possible antenna
+            if len(antList) > 1:
+                if len('RX2') == 0 or 'RX2' not in antList:
+                    print("ERROR: Please define ant1 to an allowed antenna name.")
+                    strAntList = str(antList).lstrip('(').rstrip(')').rstrip(',')
+                    print("Allowed antennas: " + strAntList)
+                    exit(0)
+
+                self.soapy_source_0.set_antenna(1,'RX2')
+
+        self.soapy_source_0.set_overall_gain(0,gain, False  )
+        self.soapy_source_0.set_overall_gain(1,10, True  )
+
+        # Prevent some weird double-gain setting issues for systems with an overall_gain setting
+        # noticed weird behavior with uhd
+        if "custom" == 'uhd' or "custom" == 'sidekiq' or "custom" == 'bladerf' or "custom" == 'lime':
+            self.soapy_source_0.set_gain(0,"PGA", 24, False  )
+            self.soapy_source_0.set_gain(1,"PGA", 24, True  )
+        else:
+            if "custom" == 'custom':
+                # If we're here and we're custom, let's still call overall gain
+                self.soapy_source_0.set_overall_gain(0,gain, False  )
+                self.soapy_source_0.set_overall_gain(1,10, True  )
+
+            self.soapy_source_0.set_gain(0,"LNA", 10, False  )
+            self.soapy_source_0.set_gain(1,"LNA", 10, True  )
+            self.soapy_source_0.set_gain(0,"TIA", 0, False  )
+            self.soapy_source_0.set_gain(1,"TIA", 0, True  )
+            self.soapy_source_0.set_gain(0,"MIX", 10, False  )
+            self.soapy_source_0.set_gain(1,"MIX", 10, True  )
+            self.soapy_source_0.set_gain(0,"VGA", 10, False  )
+            self.soapy_source_0.set_gain(1,"VGA", 10, True  )
+            # Only rtl-sdr uses TUNER, so just ch0
+            self.soapy_source_0.set_gain(0,"TUNER", 10, False  )
+            # Only hackrf uses "AMP", so just ch0
+            self.soapy_source_0.set_gain(0,"AMP", 0, False  )
+            # Only sdrplay uses IFGR so just ch0 for each
+            self.soapy_source_0.set_gain(0,"IFGR", 59, False  )
+            self.soapy_source_0.set_gain(0,"RFGR", 9, False  )
+        self.satnogs_waterfall_sink_0_0 = satnogs.waterfall_sink(4*4160*4, rx_freq, 10, 1024, waterfall_file_path, 1)
+        self.satnogs_tcp_rigctl_msg_source_0 = satnogs.tcp_rigctl_msg_source("127.0.0.1", rigctl_port, False, int(1000.0/doppler_correction_per_sec) + 1, 1500)
+        self.satnogs_sstv_pd120_sink_0 = satnogs.sstv_pd120_sink(decoded_data_file_path)
+        self.satnogs_ogg_encoder_0 = satnogs.ogg_encoder(file_path, audio_samp_rate, 0.8)
+        self.satnogs_iq_sink_0_0 = satnogs.iq_sink(16768, iq_file_path, False, enable_iq_dump)
+        self.satnogs_doppler_compensation_0 = satnogs.doppler_compensation(samp_rate_rx, rx_freq, lo_offset, 4*4160*4, 1)
+        self.rational_resampler_xxx_0 = filter.rational_resampler_fff(
+                interpolation=5263,
+                decimation=intermediate_samp_rate,
+                taps=None,
+                fractional_bw=None)
+        self.pfb_arb_resampler_xxx_0 = pfb.arb_resampler_fff(
+            audio_samp_rate / (4*4160*4),
+            taps=None,
+            flt_size=32)
+        self.pfb_arb_resampler_xxx_0.declare_sample_delay(0)
+        self.low_pass_filter_0_0_0 = filter.fir_filter_fff(
+            1,
+            firdes.low_pass(
+                1,
+                intermediate_samp_rate,
+                1500,
+                1000,
+                firdes.WIN_HAMMING,
+                6.76))
+        self.low_pass_filter_0_0 = filter.fir_filter_ccf(
+            1,
+            firdes.low_pass(
+                1,
+                4*4160*4,
+                4*4160*1.1,
+                1e3,
+                firdes.WIN_HAMMING,
+                6.76))
+        self.hilbert_fc_0 = filter.hilbert_fc(65, firdes.WIN_HAMMING, 6.76)
+        self.freq_xlating_fir_filter_xxx_0_0 = filter.freq_xlating_fir_filter_ccc(5, [63], 1750, (4*4160*4 ))
+        self.analog_wfm_rcv_0 = analog.wfm_rcv(
+        	quad_rate=4*4160*4,
+        	audio_decimation=1,
+        )
+        self.analog_nbfm_rx_0 = analog.nbfm_rx(
+        	audio_rate=intermediate_samp_rate,
+        	quad_rate=intermediate_samp_rate,
+        	tau=75e-6,
+        	max_dev=600,
+          )
+
+
+
+        ##################################################
+        # Connections
+        ##################################################
+        self.msg_connect((self.satnogs_tcp_rigctl_msg_source_0, 'freq'), (self.satnogs_doppler_compensation_0, 'doppler'))
+        self.connect((self.analog_nbfm_rx_0, 0), (self.low_pass_filter_0_0_0, 0))
+        self.connect((self.analog_wfm_rcv_0, 0), (self.hilbert_fc_0, 0))
+        self.connect((self.analog_wfm_rcv_0, 0), (self.pfb_arb_resampler_xxx_0, 0))
+        self.connect((self.freq_xlating_fir_filter_xxx_0_0, 0), (self.analog_nbfm_rx_0, 0))
+        self.connect((self.hilbert_fc_0, 0), (self.freq_xlating_fir_filter_xxx_0_0, 0))
+        self.connect((self.low_pass_filter_0_0, 0), (self.analog_wfm_rcv_0, 0))
+        self.connect((self.low_pass_filter_0_0_0, 0), (self.rational_resampler_xxx_0, 0))
+        self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.satnogs_ogg_encoder_0, 0))
+        self.connect((self.rational_resampler_xxx_0, 0), (self.satnogs_sstv_pd120_sink_0, 0))
+        self.connect((self.satnogs_doppler_compensation_0, 0), (self.low_pass_filter_0_0, 0))
+        self.connect((self.satnogs_doppler_compensation_0, 0), (self.satnogs_iq_sink_0_0, 0))
+        self.connect((self.satnogs_doppler_compensation_0, 0), (self.satnogs_waterfall_sink_0_0, 0))
+        self.connect((self.soapy_source_0, 0), (self.satnogs_doppler_compensation_0, 0))
+
+    def get_antenna(self):
+        return self.antenna
+
+    def set_antenna(self, antenna):
+        self.antenna = antenna
+        self.soapy_source_0.set_antenna(0,self.antenna)
+
+    def get_bw(self):
+        return self.bw
+
+    def set_bw(self, bw):
+        self.bw = bw
+        self.soapy_source_0.set_bandwidth(0,self.bw)
+
+    def get_decoded_data_file_path(self):
+        return self.decoded_data_file_path
+
+    def set_decoded_data_file_path(self, decoded_data_file_path):
+        self.decoded_data_file_path = decoded_data_file_path
+
+    def get_dev_args(self):
+        return self.dev_args
+
+    def set_dev_args(self, dev_args):
+        self.dev_args = dev_args
+
+    def get_doppler_correction_per_sec(self):
+        return self.doppler_correction_per_sec
+
+    def set_doppler_correction_per_sec(self, doppler_correction_per_sec):
+        self.doppler_correction_per_sec = doppler_correction_per_sec
+
+    def get_enable_iq_dump(self):
+        return self.enable_iq_dump
+
+    def set_enable_iq_dump(self, enable_iq_dump):
+        self.enable_iq_dump = enable_iq_dump
+
+    def get_file_path(self):
+        return self.file_path
+
+    def set_file_path(self, file_path):
+        self.file_path = file_path
+
+    def get_flip_images(self):
+        return self.flip_images
+
+    def set_flip_images(self, flip_images):
+        self.flip_images = flip_images
+
+    def get_gain(self):
+        return self.gain
+
+    def set_gain(self, gain):
+        self.gain = gain
+        self.soapy_source_0.set_overall_gain(0,self.gain, False  )
+
+    def get_iq_file_path(self):
+        return self.iq_file_path
+
+    def set_iq_file_path(self, iq_file_path):
+        self.iq_file_path = iq_file_path
+
+    def get_lo_offset(self):
+        return self.lo_offset
+
+    def set_lo_offset(self, lo_offset):
+        self.lo_offset = lo_offset
+        self.soapy_source_0.set_frequency(0, self.rx_freq - self.lo_offset)
+
+    def get_rigctl_port(self):
+        return self.rigctl_port
+
+    def set_rigctl_port(self, rigctl_port):
+        self.rigctl_port = rigctl_port
+
+    def get_rx_freq(self):
+        return self.rx_freq
+
+    def set_rx_freq(self, rx_freq):
+        self.rx_freq = rx_freq
+        self.soapy_source_0.set_frequency(0, self.rx_freq - self.lo_offset)
+
+    def get_samp_rate_rx(self):
+        return self.samp_rate_rx
+
+    def set_samp_rate_rx(self, samp_rate_rx):
+        self.samp_rate_rx = samp_rate_rx
+
+    def get_soapy_rx_device(self):
+        return self.soapy_rx_device
+
+    def set_soapy_rx_device(self, soapy_rx_device):
+        self.soapy_rx_device = soapy_rx_device
+
+    def get_sync(self):
+        return self.sync
+
+    def set_sync(self, sync):
+        self.sync = sync
+
+    def get_udp_IP(self):
+        return self.udp_IP
+
+    def set_udp_IP(self, udp_IP):
+        self.udp_IP = udp_IP
+
+    def get_udp_port(self):
+        return self.udp_port
+
+    def set_udp_port(self, udp_port):
+        self.udp_port = udp_port
+
+    def get_waterfall_file_path(self):
+        return self.waterfall_file_path
+
+    def set_waterfall_file_path(self, waterfall_file_path):
+        self.waterfall_file_path = waterfall_file_path
+
+    def get_intermediate_samp_rate(self):
+        return self.intermediate_samp_rate
+
+    def set_intermediate_samp_rate(self, intermediate_samp_rate):
+        self.intermediate_samp_rate = intermediate_samp_rate
+        self.low_pass_filter_0_0_0.set_taps(firdes.low_pass(1, self.intermediate_samp_rate, 1500, 1000, firdes.WIN_HAMMING, 6.76))
+
+    def get_audio_samp_rate(self):
+        return self.audio_samp_rate
+
+    def set_audio_samp_rate(self, audio_samp_rate):
+        self.audio_samp_rate = audio_samp_rate
+        self.pfb_arb_resampler_xxx_0.set_rate(self.audio_samp_rate / (4*4160*4))
+
+
+def argument_parser():
+    description = 'SSTV PD120 decoder with automatic image synchronization'
+    parser = ArgumentParser(description=description)
+    parser.add_argument(
+        "--antenna", dest="antenna", type=str, default='',
+        help="Set antenna [default=%(default)r]")
+    parser.add_argument(
+        "--bw", dest="bw", type=eng_float, default="0.0",
+        help="Set Bandwidth [default=%(default)r]")
+    parser.add_argument(
+        "--decoded-data-file-path", dest="decoded_data_file_path", type=str, default='/tmp/.satnogs/data/data',
+        help="Set decoded_data_file_path [default=%(default)r]")
+    parser.add_argument(
+        "--dev-args", dest="dev_args", type=str, default='',
+        help="Set Device arguments [default=%(default)r]")
+    parser.add_argument(
+        "--doppler-correction-per-sec", dest="doppler_correction_per_sec", type=intx, default=20,
+        help="Set doppler_correction_per_sec [default=%(default)r]")
+    parser.add_argument(
+        "--enable-iq-dump", dest="enable_iq_dump", type=intx, default=0,
+        help="Set enable_iq_dump [default=%(default)r]")
+    parser.add_argument(
+        "--file-path", dest="file_path", type=str, default='test.wav',
+        help="Set file_path [default=%(default)r]")
+    parser.add_argument(
+        "--flip-images", dest="flip_images", type=intx, default=0,
+        help="Set flip_images [default=%(default)r]")
+    parser.add_argument(
+        "--gain", dest="gain", type=eng_float, default="0.0",
+        help="Set gain [default=%(default)r]")
+    parser.add_argument(
+        "--iq-file-path", dest="iq_file_path", type=str, default='/tmp/iq.dat',
+        help="Set iq_file_path [default=%(default)r]")
+    parser.add_argument(
+        "--lo-offset", dest="lo_offset", type=eng_float, default="100.0k",
+        help="Set lo_offset [default=%(default)r]")
+    parser.add_argument(
+        "--rigctl-port", dest="rigctl_port", type=intx, default=4532,
+        help="Set rigctl_port [default=%(default)r]")
+    parser.add_argument(
+        "--rx-freq", dest="rx_freq", type=eng_float, default="100.0M",
+        help="Set rx_freq [default=%(default)r]")
+    parser.add_argument(
+        "--samp-rate-rx", dest="samp_rate_rx", type=eng_float, default="0.0",
+        help="Set Device Sampling rate [default=%(default)r]")
+    parser.add_argument(
+        "--soapy-rx-device", dest="soapy_rx_device", type=str, default='driver=invalid',
+        help="Set soapy_rx_device [default=%(default)r]")
+    parser.add_argument(
+        "--sync", dest="sync", type=intx, default=1,
+        help="Set sync [default=%(default)r]")
+    parser.add_argument(
+        "--udp-IP", dest="udp_IP", type=str, default='127.0.0.1',
+        help="Set udp_IP [default=%(default)r]")
+    parser.add_argument(
+        "--udp-port", dest="udp_port", type=intx, default=16887,
+        help="Set udp_port [default=%(default)r]")
+    parser.add_argument(
+        "--waterfall-file-path", dest="waterfall_file_path", type=str, default='/tmp/waterfall.dat',
+        help="Set waterfall_file_path [default=%(default)r]")
+    return parser
+
+
+def main(top_block_cls=satnogs_sstv_pd120_demod, options=None):
+    if options is None:
+        options = argument_parser().parse_args()
+    tb = top_block_cls(antenna=options.antenna, bw=options.bw, decoded_data_file_path=options.decoded_data_file_path, dev_args=options.dev_args, doppler_correction_per_sec=options.doppler_correction_per_sec, enable_iq_dump=options.enable_iq_dump, file_path=options.file_path, flip_images=options.flip_images, gain=options.gain, iq_file_path=options.iq_file_path, lo_offset=options.lo_offset, rigctl_port=options.rigctl_port, rx_freq=options.rx_freq, samp_rate_rx=options.samp_rate_rx, soapy_rx_device=options.soapy_rx_device, sync=options.sync, udp_IP=options.udp_IP, udp_port=options.udp_port, waterfall_file_path=options.waterfall_file_path)
+
+    def sig_handler(sig=None, frame=None):
+        tb.stop()
+        tb.wait()
+        sys.exit(0)
+
+    signal.signal(signal.SIGINT, sig_handler)
+    signal.signal(signal.SIGTERM, sig_handler)
+
+    tb.start()
+    tb.wait()
+
+
+if __name__ == '__main__':
+    main()

apps/flowgraphs/sstv_pd120_demod.grc

@@ -0,0 +1,766 @@
+options:
+  parameters:
+    author: Manolis Surligas, George Vardakis, Sebastian Schumb
+    category: '[GRC Hier Blocks]'
+    cmake_opt: ''
+    comment: ''
+    copyright: ''
+    description: SSTV PD120 decoder with automatic image synchronization
+    gen_cmake: 'On'
+    gen_linking: dynamic
+    generate_options: no_gui
+    hier_block_src_path: '.:'
+    id: satnogs_sstv_pd120_demod
+    max_nouts: '0'
+    output_language: python
+    placement: (0,0)
+    qt_qss_theme: ''
+    realtime_scheduling: ''
+    run: 'True'
+    run_command: '{python} -u {filename}'
+    run_options: run
+    sizing_mode: fixed
+    thread_safe_setters: ''
+    title: SSTV PD120 decoder
+    window_size: 2048,1080
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 8]
+    rotation: 0
+    state: enabled
+
+blocks:
+- name: audio_samp_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: '48000'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1056, 12.0]
+    rotation: 0
+    state: enabled
+- name: intermediate_samp_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: int(4*4160*4 / 5)
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1048, 644.0]
+    rotation: 0
+    state: true
+- name: analog_nbfm_rx_0
+  id: analog_nbfm_rx
+  parameters:
+    affinity: ''
+    alias: ''
+    audio_rate: intermediate_samp_rate
+    comment: ''
+    max_dev: '600'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    quad_rate: intermediate_samp_rate
+    tau: 75e-6
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1272, 524.0]
+    rotation: 0
+    state: enabled
+- name: analog_wfm_rcv_0
+  id: analog_wfm_rcv
+  parameters:
+    affinity: ''
+    alias: ''
+    audio_decimation: '1'
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    quad_rate: 4*4160*4
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [464, 524.0]
+    rotation: 0
+    state: enabled
+- name: antenna
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: str
+    value: ''
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [792, 12.0]
+    rotation: 0
+    state: enabled
+- name: bw
+  id: parameter
+  parameters:
+    alias: ''
+    comment: 'The bandwidth should configure RF filters on some devices.
+
+      Set to 0.0 for automatic calculation.'
+    hide: none
+    label: Bandwidth
+    short_id: ''
+    type: eng_float
+    value: '0.0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [952, 12.0]
+    rotation: 0
+    state: enabled
+- name: decoded_data_file_path
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: str
+    value: /tmp/.satnogs/data/data
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [16, 764.0]
+    rotation: 0
+    state: enabled
+- name: dev_args
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Device arguments
+    short_id: ''
+    type: str
+    value: ''
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [336, 12.0]
+    rotation: 0
+    state: enabled
+- name: doppler_correction_per_sec
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: intx
+    value: '20'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [176, 764.0]
+    rotation: 0
+    state: enabled
+- name: enable_iq_dump
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: intx
+    value: '0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [272, 684.0]
+    rotation: 0
+    state: enabled
+- name: file_path
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: str
+    value: test.wav
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [160, 684.0]
+    rotation: 180
+    state: enabled
+- name: flip_images
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: intx
+    value: '0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1176, 12.0]
+    rotation: 0
+    state: enabled
+- name: freq_xlating_fir_filter_xxx_0_0
+  id: freq_xlating_fir_filter_xxx
+  parameters:
+    affinity: ''
+    alias: ''
+    center_freq: '1750'
+    comment: ''
+    decim: '5'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    samp_rate: (4*4160*4 )
+    taps: '63'
+    type: ccc
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1040, 524.0]
+    rotation: 0
+    state: enabled
+- name: gain
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: eng_float
+    value: '0.0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [880, 12.0]
+    rotation: 0
+    state: enabled
+- name: hilbert_fc_0
+  id: hilbert_fc
+  parameters:
+    affinity: ''
+    alias: ''
+    beta: '6.76'
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    num_taps: '65'
+    win: firdes.WIN_HAMMING
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [792, 532.0]
+    rotation: 0
+    state: enabled
+- name: iq_file_path
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: str
+    value: /tmp/iq.dat
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [400, 684.0]
+    rotation: 0
+    state: enabled
+- name: lo_offset
+  id: parameter
+  parameters:
+    alias: ''
+    comment: 'To avoid the SDR carrier at the DC
+
+      we shift the LO a little further'
+    hide: none
+    label: ''
+    short_id: ''
+    type: eng_float
+    value: 100e3
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [704, 12.0]
+    rotation: 0
+    state: enabled
+- name: low_pass_filter_0_0
+  id: low_pass_filter
+  parameters:
+    affinity: ''
+    alias: ''
+    beta: '6.76'
+    comment: "Perform a relaxed filter to increase \nthe performance of the auto frequency\n\
+      correction"
+    cutoff_freq: 4*4160*1.1
+    decim: '1'
+    gain: '1'
+    interp: '1'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    samp_rate: 4*4160*4
+    type: fir_filter_ccf
+    width: 1e3
+    win: firdes.WIN_HAMMING
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [264, 484.0]
+    rotation: 0
+    state: enabled
+- name: low_pass_filter_0_0_0
+  id: low_pass_filter
+  parameters:
+    affinity: ''
+    alias: ''
+    beta: '6.76'
+    comment: ''
+    cutoff_freq: '1500'
+    decim: '1'
+    gain: '1'
+    interp: '1'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    samp_rate: intermediate_samp_rate
+    type: fir_filter_fff
+    width: '1000'
+    win: firdes.WIN_HAMMING
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1480, 500.0]
+    rotation: 0
+    state: enabled
+- name: pfb_arb_resampler_xxx_0
+  id: pfb_arb_resampler_xxx
+  parameters:
+    affinity: ''
+    alias: ''
+    atten: '100'
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    nfilts: '32'
+    rrate: audio_samp_rate / (4*4160*4)
+    samp_delay: '0'
+    taps: ''
+    type: fff
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [728, 380.0]
+    rotation: 0
+    state: true
+- name: rational_resampler_xxx_0
+  id: rational_resampler_xxx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    decim: intermediate_samp_rate
+    fbw: '0'
+    interp: '5263'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    taps: ''
+    type: fff
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1664, 524.0]
+    rotation: 0
+    state: enabled
+- name: rigctl_port
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: intx
+    value: '4532'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [344, 764.0]
+    rotation: 0
+    state: enabled
+- name: rx_freq
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: eng_float
+    value: 100e6
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [624, 12.0]
+    rotation: 0
+    state: enabled
+- name: samp_rate_rx
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Device Sampling rate
+    short_id: ''
+    type: eng_float
+    value: '0.0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [472, 12.0]
+    rotation: 0
+    state: enabled
+- name: satnogs_doppler_compensation_0
+  id: satnogs_doppler_compensation
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    compensate: '1'
+    lo_offset: lo_offset
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    out_samp_rate: 4*4160*4
+    samp_rate: samp_rate_rx
+    sat_freq: rx_freq
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [464, 132.0]
+    rotation: 0
+    state: true
+- name: satnogs_iq_sink_0_0
+  id: satnogs_iq_sink
+  parameters:
+    activate: enable_iq_dump
+    affinity: ''
+    alias: ''
+    append: 'False'
+    comment: ''
+    filename: iq_file_path
+    scale: '16768'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [16, 588.0]
+    rotation: 180
+    state: enabled
+- name: satnogs_ogg_encoder_0
+  id: satnogs_ogg_encoder
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    filename: file_path
+    quality: '0.8'
+    samp_rate: audio_samp_rate
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1024, 388.0]
+    rotation: 0
+    state: enabled
+- name: satnogs_sstv_pd120_sink_0
+  id: satnogs_sstv_pd120_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    filename_png: decoded_data_file_path
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1848, 540.0]
+    rotation: 0
+    state: enabled
+- name: satnogs_tcp_rigctl_msg_source_0
+  id: satnogs_tcp_rigctl_msg_source
+  parameters:
+    addr: '"127.0.0.1"'
+    affinity: ''
+    alias: ''
+    comment: ''
+    interval: int(1000.0/doppler_correction_per_sec) + 1
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    mode: 'False'
+    mtu: '1500'
+    port: rigctl_port
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [208, 244.0]
+    rotation: 0
+    state: enabled
+- name: satnogs_waterfall_sink_0_0
+  id: satnogs_waterfall_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    center_freq: rx_freq
+    comment: ''
+    fft_size: '1024'
+    filename: waterfall_file_path
+    mode: '1'
+    rps: '10'
+    samp_rate: 4*4160*4
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [16, 404.0]
+    rotation: 180
+    state: enabled
+- name: soapy_rx_device
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: str
+    value: driver=invalid
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [216, 12.0]
+    rotation: 0
+    state: enabled
+- name: soapy_source_0
+  id: soapy_source
+  parameters:
+    affinity: ''
+    alias: ''
+    amp_gain0: '0'
+    ant0: antenna
+    ant1: RX2
+    args: dev_args
+    balance0: '0'
+    balance1: '0'
+    bw0: bw
+    bw1: '0'
+    center_freq0: rx_freq - lo_offset
+    center_freq1: '0'
+    clock_rate: '0'
+    clock_source: ''
+    comment: ''
+    correction0: '0'
+    correction1: '0'
+    dc_offset0: '0'
+    dc_offset1: '0'
+    dc_offset_auto_mode0: 'False'
+    dc_offset_auto_mode1: 'False'
+    dev: soapy_rx_device
+    devname: custom
+    gain_auto_mode0: 'False'
+    gain_auto_mode1: 'False'
+    ifgr_gain: '59'
+    lna_gain0: '10'
+    lna_gain1: '10'
+    manual_gain0: 'False'
+    manual_gain1: 'True'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    mix_gain0: '10'
+    mix_gain1: '10'
+    nchan: '1'
+    nco_freq0: '0'
+    nco_freq1: '0'
+    overall_gain0: gain
+    overall_gain1: '10'
+    pga_gain0: '24'
+    pga_gain1: '24'
+    rfgr_gain: '9'
+    samp_rate: samp_rate_rx
+    sdrplay_agc_setpoint: '-30'
+    sdrplay_biastee: 'True'
+    sdrplay_dabnotch: 'False'
+    sdrplay_if_mode: Zero-IF
+    sdrplay_rfnotch: 'False'
+    tia_gain0: '0'
+    tia_gain1: '0'
+    tuner_gain0: '10'
+    tuner_gain1: '10'
+    type: fc32
+    vga_gain0: '10'
+    vga_gain1: '10'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [208, 108.0]
+    rotation: 0
+    state: true
+- name: sync
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: intx
+    value: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1264, 12.0]
+    rotation: 0
+    state: enabled
+- name: udp_IP
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: str
+    value: 127.0.0.1
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [512, 684.0]
+    rotation: 0
+    state: enabled
+- name: udp_port
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: intx
+    value: '16887'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [440, 764.0]
+    rotation: 0
+    state: enabled
+- name: virtual_sink_0
+  id: virtual_sink
+  parameters:
+    alias: ''
+    comment: ''
+    stream_id: doppler_corrected
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [768, 164.0]
+    rotation: 0
+    state: true
+- name: virtual_source_0
+  id: virtual_source
+  parameters:
+    alias: ''
+    comment: ''
+    stream_id: doppler_corrected
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [16, 532.0]
+    rotation: 0
+    state: true
+- name: waterfall_file_path
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: ''
+    short_id: ''
+    type: str
+    value: /tmp/waterfall.dat
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [16, 684.0]
+    rotation: 0
+    state: enabled
+
+connections:
+- [analog_nbfm_rx_0, '0', low_pass_filter_0_0_0, '0']
+- [analog_wfm_rcv_0, '0', hilbert_fc_0, '0']
+- [analog_wfm_rcv_0, '0', pfb_arb_resampler_xxx_0, '0']
+- [freq_xlating_fir_filter_xxx_0_0, '0', analog_nbfm_rx_0, '0']
+- [hilbert_fc_0, '0', freq_xlating_fir_filter_xxx_0_0, '0']
+- [low_pass_filter_0_0, '0', analog_wfm_rcv_0, '0']
+- [low_pass_filter_0_0_0, '0', rational_resampler_xxx_0, '0']
+- [pfb_arb_resampler_xxx_0, '0', satnogs_ogg_encoder_0, '0']
+- [rational_resampler_xxx_0, '0', satnogs_sstv_pd120_sink_0, '0']
+- [satnogs_doppler_compensation_0, '0', virtual_sink_0, '0']
+- [satnogs_tcp_rigctl_msg_source_0, freq, satnogs_doppler_compensation_0, doppler]
+- [soapy_source_0, '0', satnogs_doppler_compensation_0, '0']
+- [virtual_source_0, '0', low_pass_filter_0_0, '0']
+- [virtual_source_0, '0', satnogs_iq_sink_0_0, '0']
+- [virtual_source_0, '0', satnogs_waterfall_sink_0_0, '0']
+
+metadata:
+  file_format: 1