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Kenwood ケンウッド, Ken ... ATEX- and IECEx-certified hand-portable radios), repeaters, ... TR-7100, 144 MHz amateur radio car transceiver goes on sale. 1978 ...
The Kenwood TS-2000 is an amateur radio transceiver manufactured by the Kenwood Corporation. [ 24 ] [ 25 ] [ 26 ] Introduced in the year 2000, the radio was known for its "all-in-one" functionality. It can transmit on all amateur radio bands between 160 meters and 70 centimeters , with the exception of the 1.25 meters band, and the "X" model ...
Land mobile radio systems are widely used by the military. Separate bands in the radio spectrum are reserved for their use. This includes portions of the 30-50 MHz band, and the entire 100-100, 100-100.8, and 540-2400 MHz bands, plus shared use of the 170- 170 MHz band.
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.
Repeaters can also be linked together by using other amateur radio bands, landline, or the Internet. NASA astronaut Col. Doug Wheelock , KF5BOC, Expedition 24 flight engineer, operates the NA1SS ham radio station in the Zvezda Service Module of the International Space Station using a Kenwood TM-D700E transceiver.
This repeater could link over the Internet with other Icom repeater gateways and Reflectors via D-Plus. It did not support callsign routing or slash routing via the K5TIT G2 network. The first non-Icom D-STAR repeater fully supporting the K5TIT G2 network and D-Plus, GB7MH, went live on 10 September 2009, in West Sussex, England.
A radio repeater is a combination of a radio receiver and a radio transmitter that receives a signal and retransmits it, so that two-way radio signals can cover longer distances. A repeater sited at a high elevation can allow two mobile stations, otherwise out of line-of-sight propagation range of each other, to communicate. [1]
The architecture of NXDN is such that two NXDN channels, within a 12.5 kHz channel for example, can be allocated as voice/voice, voice/data, or data/data. As of 2012, this capability cannot be implemented in commercially available hardware on simplex or "talkaround" frequencies, but only through repeaters.
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