options:
  parameters:
    author: Manolis Surligas (surligas@gmail.com), Patrick Dohmen (DL4PD)
    category: '[GRC Hier Blocks]'
    cmake_opt: ''
    comment: ''
    copyright: ''
    description: BPSK AX.25 decoder
    gen_cmake: 'On'
    gen_linking: dynamic
    generate_options: no_gui
    hier_block_src_path: '.:'
    id: satnogs_bpsk_ax25
    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: satnogs_bpsk_ax25
    window_size: 2*1080,1080
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [8, 20]
    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: [1312, 20.0]
    rotation: 0
    state: enabled
- name: bpsk_constellation
  id: variable_constellation
  parameters:
    comment: ''
    const_points: '[-1-1j, -1+1j, 1+1j, 1-1j]'
    dims: '1'
    precision: '8'
    rot_sym: '4'
    soft_dec_lut: None
    sym_map: '[0, 1, 3, 2]'
    type: bpsk
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [624, 964.0]
    rotation: 0
    state: enabled
- name: decimation
  id: variable
  parameters:
    comment: ''
    value: satnogs.find_decimation(baudrate, 2, audio_samp_rate,sps)
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1120, 20.0]
    rotation: 0
    state: true
- name: nfilts
  id: variable
  parameters:
    comment: ''
    value: '32'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [608, 828.0]
    rotation: 0
    state: enabled
- name: rrc_taps
  id: variable
  parameters:
    comment: ''
    value: firdes.root_raised_cosine(nfilts, nfilts, 1.0/float(sps), excess_bw, 11*sps*nfilts)
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [872, 828.0]
    rotation: 0
    state: enabled
- name: sps
  id: variable
  parameters:
    comment: ''
    value: '4'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [688, 828.0]
    rotation: 0
    state: enabled
- name: variable_ax25_decoder_0
  id: variable_ax25_decoder
  parameters:
    addr: '''GND'''
    comment: ''
    crc_check: 'True'
    descrambling: 'True'
    frame_len: '512'
    promisc: 'True'
    ssid: '0'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1232, 796.0]
    rotation: 0
    state: enabled
- name: variable_ax25_decoder_0_0
  id: variable_ax25_decoder
  parameters:
    addr: '''GND'''
    comment: ''
    crc_check: 'True'
    descrambling: 'False'
    frame_len: '512'
    promisc: 'True'
    ssid: '0'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1400, 796.0]
    rotation: 0
    state: enabled
- name: analog_agc2_xx_0
  id: analog_agc2_xx
  parameters:
    affinity: ''
    alias: ''
    attack_rate: 1e-3
    comment: ''
    decay_rate: 1e-3
    gain: '1.0'
    max_gain: '65536'
    maxoutbuf: '0'
    minoutbuf: '0'
    reference: '0.5'
    type: complex
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [264, 428.0]
    rotation: 0
    state: enabled
- name: analog_agc2_xx_0_0
  id: analog_agc2_xx
  parameters:
    affinity: ''
    alias: ''
    attack_rate: '0.01'
    comment: ''
    decay_rate: '0.001'
    gain: '1.0'
    max_gain: '65536'
    maxoutbuf: '0'
    minoutbuf: '0'
    reference: '0.015'
    type: complex
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [712, 428.0]
    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: [808, 20.0]
    rotation: 0
    state: enabled
- name: baudrate
  id: parameter
  parameters:
    alias: ''
    comment: ''
    hide: none
    label: ''
    short_id: ''
    type: eng_float
    value: '9600.0'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1224, 20.0]
    rotation: 0
    state: enabled
- name: blocks_complex_to_real_0
  id: blocks_complex_to_real
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    vlen: '1'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1312, 464.0]
    rotation: 0
    state: enabled
- name: blocks_rotator_cc_0_0
  id: blocks_rotator_cc
  parameters:
    affinity: ''
    alias: ''
    comment: "Add a frequency offset of 1200 Hz \nto move the audio\n a bit higher\
      \ than 0."
    maxoutbuf: '0'
    minoutbuf: '0'
    phase_inc: 2.0 * math.pi * (1200.0 / audio_samp_rate)
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1096, 460.0]
    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: [960, 20.0]
    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: [-32, 908.0]
    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: [360, 12.0]
    rotation: 0
    state: enabled
- name: digital_constellation_receiver_cb_0
  id: digital_constellation_receiver_cb
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    constellation: bpsk_constellation
    fmax: '0.25'
    fmin: '-0.25'
    loop_bw: 2.0 * math.pi/100.0
    maxoutbuf: '0'
    minoutbuf: '0'
    showports: 'True'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1064, 608.0]
    rotation: 0
    state: enabled
- name: digital_costas_loop_cc_0_0
  id: digital_costas_loop_cc
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    order: '2'
    use_snr: 'True'
    w: 2.0 * math.pi / 100.0
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [592, 608.0]
    rotation: 0
    state: enabled
- name: digital_pfb_clock_sync_xxx_0
  id: digital_pfb_clock_sync_xxx
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    filter_size: nfilts
    init_phase: nfilts/2
    loop_bw: 2.0 * math.pi/100.0
    max_dev: '1.5'
    maxoutbuf: '0'
    minoutbuf: '0'
    osps: '1'
    sps: sps
    taps: rrc_taps
    type: ccf
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [808, 612.0]
    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: [128, 908.0]
    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: [224, 828.0]
    rotation: 0
    state: enabled
- name: excess_bw
  id: parameter
  parameters:
    alias: ''
    comment: 'The BPSK excess bandwidth setup.

      Used in filtering.'
    hide: none
    label: ''
    short_id: ''
    type: eng_float
    value: '0.35'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [760, 828.0]
    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: [112, 828.0]
    rotation: 180
    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: [888, 20.0]
    rotation: 0
    state: enabled
- name: import_0
  id: import
  parameters:
    alias: ''
    comment: ''
    imports: import math
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [7, 187]
    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: [368, 828.0]
    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: [728, 20.0]
    rotation: 0
    state: enabled
- name: low_pass_filter_0
  id: low_pass_filter
  parameters:
    affinity: ''
    alias: ''
    beta: '6.76'
    comment: ''
    cutoff_freq: ((1.0 + excess_bw) * baudrate/2.0) + min(baudrate, abs(max_cfo))
    decim: decimation // sps
    gain: '1'
    interp: '1'
    maxoutbuf: '0'
    minoutbuf: '0'
    samp_rate: baudrate*decimation
    type: fir_filter_ccf
    width: baudrate / 10.0
    win: firdes.WIN_HAMMING
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [408, 588.0]
    rotation: 0
    state: enabled
- name: low_pass_filter_0_0
  id: low_pass_filter
  parameters:
    affinity: ''
    alias: ''
    beta: '6.76'
    comment: ''
    cutoff_freq: ((1.0 + excess_bw) * baudrate/2.0) + min(baudrate, abs(max_cfo))
    decim: '1'
    gain: '1'
    interp: '1'
    maxoutbuf: '0'
    minoutbuf: '0'
    samp_rate: audio_samp_rate
    type: fir_filter_ccf
    width: baudrate / 10.0
    win: firdes.WIN_HAMMING
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [904, 412.0]
    rotation: 0
    state: enabled
- name: max_cfo
  id: parameter
  parameters:
    alias: ''
    comment: "The maximum offset allowed from the carrier.\nUsed for filtering. Larger\
      \ values allow decoding\nof frames with large frequency drifts,\n but degrades\
      \  reception performance."
    hide: none
    label: ''
    short_id: ''
    type: eng_float
    value: '1000.0'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [768, 948.0]
    rotation: 0
    state: enabled
- name: pfb_arb_resampler_xxx_0
  id: pfb_arb_resampler_xxx
  parameters:
    affinity: ''
    alias: ''
    atten: '80'
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    nfilts: '32'
    rrate: audio_samp_rate/(baudrate*decimation)
    samp_delay: '0'
    taps: ''
    type: ccf
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [464, 436.0]
    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: [368, 908.0]
    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: [648, 20.0]
    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: [488, 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: baudrate*decimation
    samp_rate: samp_rate_rx
    sat_freq: rx_freq
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [488, 132.0]
    rotation: 0
    state: true
- name: satnogs_frame_decoder_0_0
  id: satnogs_frame_decoder
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    decoder_object: variable_ax25_decoder_0
    itype: byte
    maxoutbuf: '0'
    minoutbuf: '0'
    vlen: '1'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1304, 688.0]
    rotation: 0
    state: enabled
- name: satnogs_frame_decoder_0_0_0
  id: satnogs_frame_decoder
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    decoder_object: variable_ax25_decoder_0_0
    itype: byte
    maxoutbuf: '0'
    minoutbuf: '0'
    vlen: '1'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1304, 608.0]
    rotation: 0
    state: enabled
- name: satnogs_frame_file_sink_0_1_0
  id: satnogs_frame_file_sink
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    output_type: '0'
    prefix_name: decoded_data_file_path
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1720, 612.0]
    rotation: 0
    state: enabled
- 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, 508.0]
    rotation: 180
    state: enabled
- name: satnogs_json_converter_0
  id: satnogs_json_converter
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    extra: ''
    maxoutbuf: '0'
    minoutbuf: '0'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1536, 660.0]
    rotation: 0
    state: true
- name: satnogs_ogg_encoder_0
  id: satnogs_ogg_encoder
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    filename: file_path
    quality: '1.0'
    samp_rate: audio_samp_rate
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1472, 444.0]
    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: [232, 244.0]
    rotation: 0
    state: enabled
- name: satnogs_udp_msg_sink_0_0
  id: satnogs_udp_msg_sink
  parameters:
    addr: udp_IP
    affinity: ''
    alias: ''
    comment: ''
    mtu: '1500'
    port: udp_port
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1720, 676.0]
    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: baudrate*decimation
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [16, 332.0]
    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: [232, 20.0]
    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: [232, 108.0]
    rotation: 0
    state: true
- 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: [464, 828.0]
    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: [464, 908.0]
    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: [792, 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, 460.0]
    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: [-32, 828.0]
    rotation: 0
    state: enabled

connections:
- [analog_agc2_xx_0, '0', low_pass_filter_0, '0']
- [analog_agc2_xx_0, '0', pfb_arb_resampler_xxx_0, '0']
- [analog_agc2_xx_0_0, '0', low_pass_filter_0_0, '0']
- [blocks_complex_to_real_0, '0', satnogs_ogg_encoder_0, '0']
- [blocks_rotator_cc_0_0, '0', blocks_complex_to_real_0, '0']
- [digital_constellation_receiver_cb_0, '0', satnogs_frame_decoder_0_0, '0']
- [digital_constellation_receiver_cb_0, '0', satnogs_frame_decoder_0_0_0, '0']
- [digital_costas_loop_cc_0_0, '0', digital_pfb_clock_sync_xxx_0, '0']
- [digital_pfb_clock_sync_xxx_0, '0', digital_constellation_receiver_cb_0, '0']
- [low_pass_filter_0, '0', digital_costas_loop_cc_0_0, '0']
- [low_pass_filter_0_0, '0', blocks_rotator_cc_0_0, '0']
- [pfb_arb_resampler_xxx_0, '0', analog_agc2_xx_0_0, '0']
- [satnogs_doppler_compensation_0, '0', virtual_sink_0, '0']
- [satnogs_frame_decoder_0_0, out, satnogs_json_converter_0, in]
- [satnogs_frame_decoder_0_0_0, out, satnogs_json_converter_0, in]
- [satnogs_json_converter_0, out, satnogs_frame_file_sink_0_1_0, frame]
- [satnogs_json_converter_0, out, satnogs_udp_msg_sink_0_0, in]
- [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', analog_agc2_xx_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