1940s commercial receiver (T1618E)

This receiver was found in a Radio Electronics from 1949. It is a superheterodyne of the time using 6 tubes.

Wide Band Oscillator (CB4932E)
The frequency of this oscillator can be set in a range from 5000 to 1. We found it in an old...
Liquid Level Detector (CB19922E)
This circuit is used to detect the water level in a reservoir. It triggers the charge when the...
Binary Test (CB17400E)