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RFinder's main service is the World Wide Repeater Directory (WWRD), which is a directory of amateur radio repeaters. RFinder is the official repeater directory of several amateur radio associations. RFinder has listings for several amateur radio modes , including FM , D-STAR , DMR , and ATV .
An SSTV repeater is an amateur radio repeater station that relays slow-scan television signals. A typical SSTV repeater is equipped with a HF or VHF transceiver and a computer with a sound card, which serves as a demodulator/modulator of SSTV signals. SSTV repeaters are used by amateur radio operators for exchanging pictures.
For example, in US two-way radio, 30–50 MHz is one band and 150–174 MHz is another. A repeater with an input of 33.980 MHz and an output of 46.140 MHz is a same band repeater. In same band repeaters, a central design problem is keeping the repeater's own transmitter from interfering with the receiver.
On June 15, 2011, Alabama Governor Robert J. Bentley signed House Bill 389 into law as Act 2011-675 [4] to create the radio/alert notification communications district. The purpose of this legislation was to create a mechanism for the community to transition the CSEPP communications system from the federal grant funding to locally generated ...
Winlink, or formally, Winlink Global Radio Email (registered US Service Mark), also known as the Winlink 2000 Network, is a worldwide radio messaging system that uses amateur-band radio frequencies and government frequencies to provide radio interconnection services that include email with attachments, position reporting, weather bulletins, emergency and relief communications, and message relay.
Chas. A. Alicoate, ed. (1957), "Amplitude Modulation Stations - AM: Alabama", Radio Annual and Television Yearbook, New York: Radio Daily Corp., OCLC 10512206 – via Internet Archive "AM Stations in the U.S.: Alabama", Radio Annual Television Year Book, New York: Radio Television Daily, 1963, OCLC 10512375 – via Internet Archive
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An amateur radio station is a radio station designed to provide radiocommunications in the amateur radio service for an amateur radio operator. Radio amateurs build and operate several types of amateur radio stations, including fixed ground stations, mobile stations, space stations, and temporary field stations.
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