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Motorola T5320 FRS handheld radio. The Family Radio Service (FRS) is an improved walkie-talkie radio system authorized in the United States since 1996. This personal radio service uses channelized frequencies around 462 and 467 MHz in the ultra high frequency (UHF) band.
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 ...
In practice, some UHF connector products will handle over 4 kV peak voltage. [19] Manufacturers typically test UHF jumpers in the 3-5 kV range. [citation needed] UHF connectors are standard on HF amateur amplifiers rated at 1500 + Watts output. [citation needed] In practice, voltage limit is set by the air gap between center and shield.
The simplest klystron tube is the two-cavity klystron. In this tube there are two microwave cavity resonators, the "catcher" and the "buncher". When used as an amplifier, the weak microwave signal to be amplified is applied to the buncher cavity through a coaxial cable or waveguide, and the amplified signal is extracted from the catcher cavity.
Diagram of leaky feeder cable. A leaky feeder is a communications system used in underground mines and inside tunnels. [1] Manufacturers and cabling professionals use the term "radiating cable" [2] [3] [better source needed] [4] as this implies that the cable is designed to radiate: something that a typical coaxial cable is generally not intended to do.
Available accessories include remote controls, transmit power amplifiers, antennas, and ground support equipment. [6] It has been largely replaced by the AN/ARC-210 series in U.S. systems. [ 7 ] The ARC-210 is an improved version of the ARC-182, adding jam-reisistant SINCGARS capability to communicate with Army radios for close air support.
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The ARC-210 is a family of radios for military aircraft that provides two-way, multi-mode voice and data communications over a 30 to 512+ MHz frequency range. It covers both Ultra High Frequency (UHF) and Very High Frequency (VHF) bands with AM , FM and SATCOM capabilities. [ 1 ]
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