Receiver for the 40m band LM602 (CB25305E)

This circuit uses an FM IF transformer for tuning. The circuit is from a Radio Electronics magazine from April 1990.

Digitally Controlled Oscillator (CB18268E)
We can control the frequency of an oscillator from digital circuits or from the output of a...
Dimmer with triac (CB26092E)
We recommend adding a 470-ohm resistor in series with the potentiometer in this dimmer circuit...
Automatic Gain Control for Recording (CB24224E)
We found this circuit for old tape recorders in the December 1972 Radio Electronics magazine. The...