This is the typical circuit of a local oscillator for a superheterodyne FM receiver. The circuit was found in a 1980s documentation and is typical of early and early receivers.
This metering bridge circuit uses one power supply only. The operational ones depend on the...
The circuit shown in the figure was found in a 1974 publication. The field effect transistor may...
The signal itself captured by the (long) antenna serves to feed this simple experimental circuit....