This interesting reflex receiver used a different component, which at the time was showing up. The receiver is from a 1924 documentation and used a sodion tube.
This interface was found in a Modern Electronics magazine from 1990. Although the circuit is...
This circuit, found in a 1980 publication, limits the amplitude of the output signal to a value...
The circuit is from old documentation from the 70s, but the components are still common, as the...