We found this circuit in a Popular Electronics from the 90s. It operates at a frequency of 15 kHz. Components can be difficult to obtain, such as the integrated circuit.
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...