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2. Antenna tuner - Wikipedia

   en.wikipedia.org/wiki/Antenna_tuner

   t. e. An antenna tuner, a matchbox, transmatch, antenna tuning unit(ATU), antenna coupler, or feedline coupleris a device connected between a radio transmitteror receiver and its antennato improve power transfer between them by matchingthe impedanceof the radio to the antenna's feedline. Antenna tuners are particularly important for use with ...

3. Yaesu FT-817 - Wikipedia

   en.wikipedia.org/wiki/Yaesu_FT-817

   [1] [2] With internal battery pack, on board keyer, its all mode/all band capability and flexible antenna, the set is particularly well suited for portable use. The FT-817 is based on a similar circuit architecture as Yaesu's FT-857 and FT-897, so it is a compromise transceiver and incorporates its features to its low price ($670.- at its 2001 ...

4. AN/PRC-117 - Wikipedia

   en.wikipedia.org/wiki/AN/PRC-117

   A PRC-117 radio and SATCOM antenna. The AN/PRC-117F/G radio is currently in use with the United States Navy Seabee and EOD teams in their MRAP and JERRV vehicles. [2] The radio is also in use by the United States Marine Corps, [6] United States Army, [7] USSOCOM, [8] United States Coast Guard, United States Air Force, [9] Royal Air Force, [10] Dutch Army, Spanish Air Force, British Army ...

5. Random wire antenna - Wikipedia

   en.wikipedia.org/wiki/Random_wire_antenna

   Random wire antenna. A wire antenna kit, with a coil of wire, strain insulators and a balun. When installed the wire is supported by buildings or trees using the insulators to prevent a short circuit to ground. A random wire antenna is a radio antenna consisting of a long wire suspended above the ground, whose length does not bear a particular ...

6. Antenna (radio) - Wikipedia

   en.wikipedia.org/wiki/Antenna_(radio)

   Film on working of antenna. In radio engineering, an antenna (American English) or aerial (British English) is an electronic device that converts an alternating electric current into radio waves (transmitting), or radio waves into an electric current (receiving). [ 1 ][ 2 ] It is the interface between radio waves propagating through space and ...

7. UHF television broadcasting - Wikipedia

   en.wikipedia.org/wiki/UHF_television_broadcasting

   The upper antenna is a Yagi design. UHF television broadcasting is the use of ultra high frequency (UHF) radio for over-the-air transmission of television signals. UHF frequencies are used for both analog and digital television broadcasts. UHF channels are typically given higher channel numbers, like the US arrangement with VHF channels ...