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DX-300 Hobbyist triple conversion AM USB LSB N W 0 no Realistic DX-302 Hobbyist .01-30 triple conversion AM USB LSB N W 0 96x233x230 8 3 1 no [59] Realistic DX-394 Hobbyist 1995-1998 .15-30 double conversion AM LSB USB CW 5.7 6 7.2 160 2.1 96x233x230 5 30 1 [60] Redifon: R50 ~1948 .0135-.026, .095-32 valve superhet [61] Redifon R50M 1951
The (American version) radio's main receiver covers 30 kHz through 60 MHz, 142 MHz through 152 MHz, and 420 through 450 MHz (plus 1240 through 1300 MHz with the "X" model). The sub-receiver tunes between 118 and 174 MHz, and from 220 to 512 MHz (VFO ranges).
Alinco ( Alinco Inc.) (TYO: 5933) is a Japanese manufacturer of radio and amplification equipment, and in the Japanese market, metal products, construction equipment ...
The Realistic DX-302 is a general coverage (long-wave, medium-wave, and short-wave) radio manufactured by General Research of Electronics (GRE) of Chiba, Japan and marketed in the United States by Radio Shack (Tandy Corporation) from 1980 through 1982.
A communications receiver is a type of radio receiver used as a component of a radio communication link. This is in contrast to a broadcast receiver which is used to receive radio broadcasts . A communication receiver receives parts of the radio spectrum not used for broadcasting, including amateur, military, aircraft, marine, and other bands.
Two-way voice communications - A two-way radio is an audio transceiver, a receiver and transmitter in the same device, used for bidirectional person-to-person voice communication. The radio link may be half-duplex , using a single radio channel in which only one radio can transmit at a time. so different users take turns talking, pressing a ...
Radio amateurs may engage in satellite and space craft communications; however, the frequencies allowed for such activities are allocated separately from more general use radio amateur bands. Under the International Telecommunication Union 's rules, all amateur radio operations may only occur within 50 kilometres (31 mi) of the Earth's surface.
Automatic Link Establishment, commonly known as ALE, is the worldwide de facto standard for digitally initiating and sustaining HF radio communications. [1] ALE is a feature in an HF communications radio transceiver system that enables the radio station to make contact, or initiate a circuit, between itself and another HF radio station or network of stations.
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