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.
This circuit was found in a 90s Integrated Circuits Data Book. It interfaces a data line with a...
The basis of this project is an integrated 566 (not to be confused with a 556 which is a double...
Found in Motorola documentation from the 1980s, this circuit employs an integrated device from...