This unit includes the following:
- intermediate frequency IF amplification – MC1350
- optional crystal filter (4 pole variable crystal Jones type filter)
- RX product detector – SA612
- AF preamplifier – MC33079DG
- RX MUTE and sidetone input circuitry
- AF final amplifier – SA58631
- Fast IF 134kHz Automatic Gain Control scheme – SA612,MC33079DG
- Optional AF filter board
PCB component side
IF/AF unit