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.

Positive Voltage Regulator (CB5461E)
The integrated circuit used in this regulator is not very common today. The circuit is from old...
1092 LED panel indicators (COM001E)
May 2016 - It can be obtained from Mouser Electronics new display 1092 from VDC. The new LED...
Low Voltage Protector (CB4146E)
The circuit shown in the figure shuts off a load when the voltage drops below the value determined...