This transmitter for the 2-meter range with a power of 1.5 W was found in a magazine 73 for radio amateurs. No information was provided about the coils.
This circuit is from a 1967 General Electric SCR manual. The capacitors are polyester and the...
This oscillator for frequencies up to a few tens of kilohertz was found in a 1970s documentation. The...
This varicap-less modulator circuit was found in an Electronic Design from the 90's. The circuit...