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.
We found this circuit in an article in Radio Electronics magazine from November 1971. The circuit has...
This filter was obtained from Radio Electronics from the 80's. The configuration applies to any...
This receiver was obtained in a documentation from the 90's and is of the super-regenerative type....