Researchers have used the latest wireless technology to develop a new radio receiver for astronomy. The receiver is capable of capturing radio waves at frequencies over a range several times wider ...

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 ...

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 ...

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, ...

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.

Marked: on panel: "Type 281 Short Wave Receiver / The Colin B. Kenney Co. / San Francisco." On nameplate: "The Colin B. Kennedy Co. / St. Louis--San Francisco / Licensed Under Armstrong / U.S. Patent ...