This circuit was found in an American 1980s documentation. The transistorized step is the receiver's last IF and the diode is the receiver's existing detector.
We find this power oscillator circuit in a 90's Popular Electronics. The circuit can be powered by...
This circuit allows you to read capacitances on a common analog instrument. It is part of an...
This circuit was found in the March 1990 issue of Radio Electronics magazine. The circuit can be...