There are many ways to build a radio receiver, but most have a few things in common, such as oscillators, tuned circuits, detectors, mixers, and amplifiers. Put those together in the right order and ...

This article is intended to introduce the beginner to the interesting and challenging art of high frequency radio design. It is also intended to entice the seasoned professional to take a deeper look ...

Marked: "Radio Receiver / Type CN-113-A / Serial no. 587 / 300m to 2500m / Made for Bureau of Steam / Engineering by National Electric / Supply Co., Washington, D.C. / Reg. No. 73 N.S.A. / Cont. No.

Testing FM receivers is not that much different than testing other pieces of audio equipment. Appropriate tests include the big six: level, frequency response, THD+N, phase, interchannel crosstalk, ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. The Volksempfänger (or people’s ...

Host compatibility testing with listeners indicated a significant impact when higher IBOC power is combined with extended hybrid mode transmission, especially with less-costly SCA receivers. That ...