This circuit was found in a 1965 General Electric documentation. It is intended for reception of the aviation strip, but inside an aircraft or nearby (which is now prohibited).
This source was found in a 1982 American publication, but can be easily assembled using 2N2995 (PNP...
September 2017 - Panasonic Dy2L TVS diodes for network applications, security, medical equipment,...
This short-range circuit for the AM NW range was found in a 1960 Sylvania transistor manual. The...