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An antenna tuner, a matchbox, transmatch, antenna tuning unit (ATU), antenna coupler, or feedline coupler is a device connected between a radio transmitter or receiver and its antenna to improve power transfer between them by matching the impedance of the radio to the antenna's feedline. Antenna tuners are particularly important for use with ...
MFJ Enterprises was an American manufacturer specializing in a wide range of products for the amateur radio market. The company focuses on station accessories, including antenna tuners and antenna switching equipment. MFJ was founded in 1972 by Martin F. Jue. As of 2014, the company was recognized as the largest producer of amateur radio ...
[24] [25] [26] Introduced in the year 2000, the radio was known for its "all-in-one" functionality. It can transmit on all amateur radio bands between 160 meters and 70 centimeters, with the exception of the 1.25 meters band, and the "X" model also has built-in 23 centimeters band capability option. Kenwood discontinued production of the TS ...
A 1939 company catalog bore the names Radio Wire Television Co. Inc. and "Lafayette Radio Corporation". In 1948, the company issued a catalog under the name “Lafayette-Concord” and called itself the “world’s largest radio supply organization”. In 1952, a catalog was issued using only the Lafayette name. [1]
Drake TR-4, W-4, MS-4 circa 1971. The R. L. Drake Company is a manufacturer of electronic communications equipment located in Springboro, Ohio.It is also known for its line of equipment for amateur radio and shortwave listening, built in the 1950s through the 1980s.
An antenna tuning hut or helix house is a small shed at the base of a longwave or mediumwave radio transmitting antenna. It contains antenna tuner — radio equipment for coupling the power from the feedline to the antenna. [1] Alternative names include antenna tuning house, coupling hut, and dog house.