This TV remote control receiver uses a ratchet system to activate an old drum-type selector to change channels. A common system at the time. The circuit is from a Radio Electronics from February 1961.
This transceiver circuit was found in a 1997 documentation. The circuit operates in the 80 meters...
We found this circuit in the Linear Applications Handbook published by National Semiconductor in...
The configuration presented below was obtained in the Linear Application Handbook of the National...