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 ...

In 1935, Zenith Radio produced a radio receiver called the Stratosphere model 1000Z. The set used 25 tubes and three loudspeakers, more than any other radio to date. A then-amazing 50W drove its three ...

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.

Digital receivers have revolutionized electronic systems for a variety of applications including communications, data acquisition, and signal processing. This series shows how digital receivers, the ...

THE principles upon which radio receivers of various types are designed at the present time have been developed by various technical workers, who have in many cases specialized on particular ...

If you’ve ever built a crystal radio, there’s something magical about being able to pull voices and music from far away out of thin air. If you haven’t built one, maybe you should while there’s still ...

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 ...

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 ...

Marked: "Grebe Radio / Richmond Hill, N.Y. / Type CR-8 / 150 to 1000 M. / Serial No. 868." Plate: "Licensed Under Armstrong Patent No. 1113149 Oct. 6, 1914 / For Amateur or Experimental Use Only. / ...