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An avalanche transceiver or avalanche beacon is a type of emergency locator beacon, a radio transceiver (a transmitter and receiver in one unit) operating at 457 kHz for the purpose of finding people buried under snow. They are widely carried by skiers, particularly back country skiers for use in case a skier is buried by an avalanche.
The company also offers avalanche transceivers under the Barryvox brand. [27] In addition to the main Mammut brand, the Mammut Sports Group also included Ajungilak (sleeping bags), Lucido (headlamps) and Raichle (shoes) as independent brands. The company now only carries Mammut as its main brand (for example, Raichle was discontinued around ...
Avalanche Transceivers — known as beacons, "beepers", peeps (pieps), ARVAs (Appareil de Recherche de Victimes en Avalanche, in French), LVS (Lawinen-Verschütteten-Suchgerät, Swiss German), or various other trade names, are important for every member of the party. They emit a "beep" via 457 kHz radio signal in normal use, but may be switched ...
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The antenna feed system or antenna feed is the cable or conductor, and other associated equipment, which connects the transmitter or receiver with the antenna and makes the two devices compatible. [ 1 ] [ 2 ] In a radio transmitter, the transmitter generates an alternating current of radio frequency , and the feed system feeds the current to ...
The radio frequency current from the transmitter is supplied to the antenna through a cable called the feedline.The antenna tuning hut contains a matching network made of high wattage capacitors and inductors (coils) that in combination match the antenna's impedance to the feedline, to efficiently transfer power into the antenna.
Typically a transmitter design includes generation of a carrier signal, which is normally [3] sinusoidal, optionally one or more frequency multiplication stages, a modulator, a power amplifier, and a filter and matching network to connect to an antenna. A very simple transmitter might contain only a continuously running oscillator coupled to ...
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