Block interconnection diagram

My homebrew HF transceiver consist of the following printed circuit boards:

  1. Front Panel assembly – plastic front panel, control knobs, FSTN display and keyboards, control board
  2. Mother board – fits all connectors on the rear panel, power supply, I/O controller (second CPU) intended to be a chassis for all RF boards and options, as long as “cable harness” and board interconnections.
  3. IF/AF Board – IF and audio circuitry, IF AGC 134kHz. Second narrow band crystal filter (option). AF filter (option)
  4. RF mixer board – RX/TX switching, receiver front end, first RX mixer, TX mixer, first roofing crystal filter, ALC circuit. Noise blanker (option)
  5. Band pass filters – Front end filters 160-10m (160m option)
  6. SSB GEN board – forms both CW and SSB signals, microphone amplifier, compressor unit (option)
  7. LO board – local oscillators, side tone and beep tone oscillator. First oscillator and BFO oscillator.
  8. Compressor unit (option)
  9. Automatic antenna tuner (option).
  10. Transverter/RX antenna board (option).
  11. Power amplifier assembly – consist of two boards PA50W and LPF nested directly onto the rear panel

argo-one-block-diagram

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