Found in a 90s Popular Electronics, this circuit uses components from that time, for a superheterodyne receiver design.
This RF amplifier step has a dynamic range of 140 dB and can amplify signals from 0.5 to 40 MHz....
We found this amplifier with 50 MΩ input resistance in the May 1989 Radio Electronics magazine. The...
Found in 1967 Raytheon documentation, this circuit uses a company coupler consisting of a lamp and...