This receiver is from a 1924 Gernsback publication. The receiver has good efficiency when powered by the indicated voltages. Listening is through a high-impedance phone.
August 2016 - Mouser announced the availability of the new capacitors high voltage HV series...
This circuit was found in an English documentation from the 90's. The circuit has the frequencies...
This circuit is from a Radio Electronics from October 1963. The LDR and transistors are from the...