| A | B |
|---|
 | Amplifier |
 | Circuit |
 | Mixer |
 | Signal Path |
 | A connection to a switch |
 | Data Bus |
 | 1A10 Synthesizer Assembly |
 | 1A14 Control Assembly |
 | 1A18 ISB IF/Audio Assembly |
 | 1A19 Preselector Assembly |
 | 1A1 Input Filter Assembly |
 | 1A2 First Converter Assembly |
 | 1A3 Second Converter Assembly |
 | 1A4 IF Filter Select Assembly |
 | 1A5 IF/Audio PWB Assembly |
