Early radio receivers worked on a principle called Tuned Radio frequency (TRF), patented in 1916. They weren’t very easy to use, requiring each stage to be tuned to the same frequency (until ganged ...
The $50 Tecsun PL-360 AM/FM/SW receiver has been out for a while and is considered by the short wave listener (SWL) community as a pretty fair receiver for the size – beating out several other recent ...
Relatively few Americans are aware of it, but the United States is home to many commercial/religious international broadcasters that transmit programming worldwide using analog shortwave radio ...
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