1940s commercial receiver (T1618E)

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

Controlled Oscillator 4093 (CB12025E)
This circuit is from a Popular Electronics of December 1993. In it we have the way to externally connect...
Automotive equipment source (CB9116E)
With this power supply it is possible to use automotive devices with currents up to about 8A on the...
Tone decoder (CB9675E)
This circuit was found in a 80’s American documentation. The adjustment trimpot is from 47k to...