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.
This 100 kHz crystal controlled oscillator was found in an American 1980s documentation. The...
Only two transistors are used in this preamp for low-sensitive transducers, such as guitar and...
Found in Popular Electronics this circuit uses current components to control a pump in order to...