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.
With this circuit it is possible to excite direct current relays from an alternating signal,...
This circuit is from an old documentation. The integrated circuit can be replaced by a modern...
The FET can be a BF245, and the other transistors can be the BC548 and BC558 in this simple AM...