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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.
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 ...
The SCR-299 was a U.S. Signal Corps mobile military communications unit used during World War II. [ 1 ] CCKW truck shelter-mounted version of the SCR-299, the SCR-399
The feedline is connected to an antenna tuning unit (impedance matching network) at the base of the mast, to match the transmission line to the mast. [5] This may be located in a waterproof box or a small shed called an antenna tuning hut (helix house) next to the mast.
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The signals are received via an outdoor parabolic antenna commonly referred to as a satellite dish and a low-noise block downconverter. Diagram showing how modern satellite television works. A satellite receiver decodes the desired television program for viewing on a television set. Receivers can be external set-top boxes, or a built-in ...
An amateur radio installation on a 28' yacht, including 100W HF transceiver with microphone, manual antenna tuner, and morse key. Maritime mobile amateur radio is an amateur radio transmission license that allows maritime operators to install and use radio while they operating at sea. The call sign of operators is extended by adding the suffix ...
A TURF (Tuning Unit Radio Frequency) is an Antenna Tuning Unit or ATU. It is used to artificially lengthen the antenna (or tune it) Often at HF wavelengths for example an antenna would be physically too long to attach to a radio without affecting portability and manoeuvrability.