| TRC1800 - Front | TRC1800 - Rack |
 |
 |
| TRC-1800 - A01 - SSB 6kHz Filter | TRC-1800 - A02 - CW Wide Filter |
 |
 |
| TRC-1800 - A03 - CW Narrow Filter | TRC-1800 - A04 - ISB 12kHz Filter |
 |
 |
| TRC-1800 - A05 - 50kHz IF | TRC-1800 - A06 - CW Oscillator |
 |
 |
| TRC-1800 - A07 - Demodulation & Audio | |
 |