Suggested by an American publication of 1964 this circuit is intended for the capture of signals from film tracks recorded by optical systems, common at the time.
This wireless stapler transmits telephone conversations to an FM receiver at up to 50 meters. The...
This automatic switch for multiple loads was shown in the May 1983 issue of Radio Electronics...
Created to serve as a booster for TV signals in the UHF band, this circuit was found in the March...