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 code practice oscillator was found in an English publication from the 80's. The circuit can...
This crystal oscillator is indicated for the calibration of IF steps of common radio receivers. The...
In the figure we have the simple way of controlling a load or having a signal from an optical...