This intermediate frequency amplifier step using 2 junction FETs has a gain of 20 dB. The pass band is 4 MHz. FETs are for general use, with several types that serve in this circuit as BF245.
This configuration that appears in other points of this section was obtained in a 90’s Popular...
This is the receiver for the earlier system published in the August 1988 Radio Electronics...
The input resistance of this circuit is 60k and the pass band from 20 to 20kHz. The circuit is...