The figure shows a remote-control receiver working the 27 MHz band, very popular in the 60’s. The circuit us from a February 1961 Radio Electronics magazine.
This simple multitester tests continuity, semiconductors, leaks, and other common component...
A passive mixer with few components is that of the circuit shown, found in a 1982 documentation. As readers...
The purpose of this circuit is to detect audio that amplitude modulates an RF carrier. The circuit is...