This squelch circuit is placed at the input of the single receiver audio amplifier stage. Its purpose is to silence background noise. The circuit is from an 80's documentation.
If you have an old cassette player or bought one from a junk shop, you can set up a small table...
This Linear Technology circuit was found in a 1980s documentation. The circuit can swing up to a...
This metal detector circuit uses an AM radio as an indicator. The radio is placed off-station and tuned...