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 ...

From the receiving side of the circuit, the antenna was made of random wire coupled with the inductor L1 having a single turn while inductor L2 has 4 turns wound around a 35 mm film container. Both ...

Modern radio receivers have a distinct advantage over the common early designs which I covered in my previous article. Most of the receivers you will have worked with over the past couple decades are ...

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 ...

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. National Air and Space Museum ...