My homebrew HF transceiver RGO ONE consists 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). SSB monitor amplifier.
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, Line in/Mic in circuit.
7. LO board – local oscillators, side tone and beep tone oscillator. First oscillator and BFO oscillator. SSB monitor .
8. Compressor unit (option)
9. Automatic antenna tuner (option).
10. Transverter/RX antenna board (option).
11. Power amplifier assembly – consist of two boards PA55W and LPF nested directly onto the rear panel

    Block diagram and coax interconnections