High gain radio (CB21922E)

This simple 1 transistor radio was found in Raytheon's transistor manual. The transistor is germanium from the 60s.

Microtransmitter (CB23575E)
This VHF transmitter was found in Radio Electronics magazine from June 1964. The transistor is an...
Photoelectric relay (CB23650E)
This two-transistor circuit is from a Radio Electronics magazine from April 1965. The transistors are...
Delayed Pulse Generator (CB6470E)
This circuit was found in a 1967 documentation. The switch diode is a component of the time and is...