Matching antenna (CB7458E)

The coil and sockets of this circuit found in a QST depend on the frequency band that is intended to be tuned.

Noiseless Switch 4001 (CB24328E)
This noiseless switch was found in the October 1974 issue of Radio Electronics magazine. The...
TV Microtransmitter (CB4671E)
We find this ultra-simple transmitter circuit that is nothing more than a very short range RF...
2 Way Crossover (CB16763E)
This circuit was found in a 1992 documentation consisting of a two-channel active filter for audio...