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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 ...
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.
This is a list of United States Army fire control, and sighting material by supply catalog designation, or Standard Nomenclature List (SNL) group "F".The United States Army Ordnance Corps Supply Catalog used an alpha-numeric nomenclature system from about the mid-1920s to about 1958.
The co-ordination of HQ radio frequency channels in the NATO-harmonised UHF-band, the design of the so-called HQ hop-sets, is provided in NATO-Europe in responsibility of the NATO Allied Radio Frequency Agency (ARFA) in Brussels. For training and exercises, HQ operates in peacetime mode with limited frequency access. Four net-numbers may be ...
Frequency range: 380–470 MHz (UHF R1) Power output: 2.5–5 watts Antenna: omnidirectional, flexible monopole antenna mounted to radio body with SMA connector. 50Ω characteristic impedance. Transmission Range: up to 5 miles on flat terrain, 1 mile with obstacles Channels: 240 channels total, 12.5 or 25 kHz channel bandwidth
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.
Those RTs with power settings can vary transmission range from approximately 200 meters (660 feet) to 10 kilometers (km) (6.2 miles). Adding a power amplifier increases the line of sight (LOS) range to approximately 40 km (25 miles). (These ranges are for planning purposes only; terrain, weather, and antenna height can affect transmission range.)
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.
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