Low Frequency Doubler MC1556G (CB14564E)

This circuit is from Motorola's 1990 Linear Databook. The circuit employs a component that is no longer common today.

10 meter bamd receiver (CB23937E)
This 5-transistor receiver was obtained from an article in the February 1969 Radio Electronics magazine....
Computer Voice (CB9859E)
The oscillation of the relay causes the applied audio signal to deform and start to resemble the...
10W Amplifier (CB23878E)
Using period transistors, this 10 W amplifier was found in Radio Electronics magazine from May...