This FM receiver tuning step circuit was found in a 1960 documentation. No information about the coils is given, but the FI used at the time was 10.8 MHz.
The circuit shown with the LM3914 was found in the March 1992 issue of Radio Electronics magazine. The...
This circuit was obtained from an English magazine from 1976. The circuit activates a sensitive relay...
The 8038 integrated circuit consists of a function generator with outputs of three waveforms. It...