This circuit was found in an English magazine from 1977. Signal inputs and outputs must be shielded, and the circuit can be powered by battery, since its consumption is low.
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...