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 2 meter (144 MHz) preamplifier is intended for use with portable transceivers. The...
This circuit was found in a 1970s RCA publication. Transistors support modern equivalent types....
The circuit presented is from the Motorola Linear Databook of 1990. The integrated circuit is a...