This amplifier with the LM1098 and LM101 by Motorola from a 1990 manual can be designed with more modern operations. The bandpass for small signals is 3.5 MHz and the power range is 250 kHz.
This is a typical 80's FM radio mixer circuit. The circuit was found in a documentation of the...
This three-transistor amplifier uses a JFET at the input to increase the input impedance. The...
We found this circuit in an American 1980s documentation. Other comparators can be used and the...