FET simple mixer (CB8760E)

We found this simple mixer in a 90s Radio Electronics. The used FETs are still common. The inputs are high impedance.

Transceiver relay interface (CB7832E)
This circuit was found in a 73 magazine for radio amateurs from the 90s. The circuit uses high...
Current to voltage converter (CB5094E)
This circuit was found in an American documentation. Its purpose is to allow the use of a digital...
4 kHz burst recovery circuit (CB9395E)
We found this circuit in a 1964 Electronic Design. It provides 0.5 V signals from 4 kHz...