How does it Work?

(1) Mixer

(2) IF amp and BFO

(3) Detector

(4) Audio Amp

(5) Power Supply

Here is the detector circuit. OK, maybe this is the "heart" of the receiver! Here is where the audio is taken from the Radio Frequency (RF) signal. Diode D2 does that magic. Not too much to notice except for the audio frequency (AF) gain control pot and how the detector is muted. Noticed that when the switch is placed in mute (standby), the diode is grounded. Crude, but effective. You will also notice that there is no filtering of any kind. What this means is that the audio will have a bandwidth of about 6 Kilocycles. Wide enough for a single AM or SSB signal and possibly 4 or more CW signals.

(1) Mixer

(2) IF amp and BFO

(3) Detector

(4) Audio Amp

(5) Power Supply

Complete Schematic for the Conar Model 500 Receiver

Conar Transmitter Manual - and - Conar Receiver Manual