This receiver was found in a Radio Electronics from 1949. It is a superheterodyne of the time using 6 tubes.
Found in a Hands On Electronics of the 80s, this circuit makes use of an integrated circuit of the time...
April 2017 - Mouser Electronics is sourcing the new Qoorvo RFCA8830 integrated circuit a CATV...
In this circuit the relay triggers on when light falls onto the sensor, a common LDR. Power supply...