This is the receiver for the previous circuit, also found in 90s Radio Electronics. The circuit operates at 2.25 MHz, detecting variations in signal frequency due to the Doppler effect.
The circuit shown was obtained in American documentation from 1968. MOSFETs can be replaced by...
We found this circuit on a Radio Electronics. Similar configurations can be found in this section. The...
This simple two-transistor FM transmitter was found in the November 1991 issue of Radio...