1940s commercial receiver (T1618E)

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

Potentiometer remote control (CB8029E)
This circuit was obtained in a 1967 Raytheon manual. The company's component is an optical coupler with...
Voltage to frequency converter (CB9449E)
This circuit was obtained from a 90s Radio Electronics. The components used are from that time. The...
555 in Cascade with Automatic Retrigger (CB1265E)
We found this configuration in a documentation for radio amateurs from 1974. The circuit can be...