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 circuit uses a loop antenna to receive and amplify signals from the 60 kHz long wave band....
This circuit was obtained from a 1967 magazine. The magazine no longer exists, but the circuit can still...
This two-transistor preamplifier was found in a 1960 Sylvania transistor manual. The output...