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An amateur radio repeater system consisting of a 70 cm repeater and a 2-meter digipeater and iGate. Coaxial cavity RF filter at 2 meter repeater An amateur radio repeater is an electronic device that receives a weak or low-level amateur radio signal and retransmits it at a higher level or higher power, so that the signal can cover longer ...
Linking multiple repeaters to enable a repeater outside the communications range of the handheld or mobile device to retransmit messages violates sections 95.1733(a)(8) and 95.1749 of the Commission's rules, and potentially other rules in 47 C.F.R. Repeaters may be connected to the telephone network or other networks only for purposes of remote ...
IR sites are generally used for a small geographic area or to fill in holes. For sites that are used to fill in coverage traffic is very limited. To allow as limited a number of channels for use, and to be spectrum efficient, Voice On Control (VOC) was developed to permit the control channel to temporarily act as a voice channel. [ 1 ]
Some repeaters use two different frequency bands to provide isolation between input and output or as a convenience. In a communications satellite, a transponder serves a similar function, but the transponder does not necessarily demodulate the relayed signals. A continuous-duty, rack-mount iDEN digital trunked system repeater at a cell site.
AN/AAA - Airborne Infrared Auxiliary Systems Designation Purpose/Description Location/Used By Manufacturer AN/AAA-3: Receiver Group, paired with AN/AAS-15: F-8 Crusader: AN/AAA-4: Infrared search and track (IRST) system: F-4 Phantom II [1] [2] American Car and Foundry Company, [3] Texas Instruments (now Raytheon)
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WIRES uses DTMF signaling to make a connection over the Internet from a repeater or home station to another WIRES-equipped station that is accessible over the Internet. No proprietary tones or connection formats are used, so any manufacturer's radio (equipped with a DTMF encoding keypad) may be used to bring up the Internet link.
TD-2 was a microwave relay system developed by Bell Labs and used by AT&T to build a cross-country network of repeaters for telephone and television transmission. The same system was also used to build the Canadian Trans-Canada Skyway system by Bell Canada , and later, many other companies in many countries to build similar networks for both ...
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