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The receiver weighs 85 pounds (39 kg) and can be operated on 120-volt or 240-volt supplies. It fits neatly into a 10.5-inch-tall (270 mm) standard 19-inch rack . [ 2 ] : 6 [ 3 ] Tuning of the R-390A's radio frequency and intermediate frequency front end is synchronized by means of an ingenious mechanical system of racks, gears, and cams.
This is a list of rack-mount or tabletop communications receivers that include short wave frequencies. This list does not include handheld, portable or consumer grade equipment. Those that include VHF or UHF can be termed wideband receivers, whereas those without HF would be termed scanners, or surveillance receivers.
The Collins mechanical filter was introduced to consumers in the 75A-3, and the 75A-4 was one of the first receivers marketed specifically as a single sideband receiver. Collins R-390A radio receiver. Around 1950, Collins began designing the R-390 (500 kHz — 30 MHz) for the US military. This was intended to be a receiver of the highest ...
The RCA model R7 Superette superheterodyne table radio. This is a list of notable radios, which encompasses specific models and brands of radio transmitters, receivers and transceivers, both actively manufactured and defunct, including receivers, two-way radios, citizens band radios, shortwave radios, ham radios, scanners, weather radios and airband and marine VHF radios.
Modern communications receiver, ICOM RC-9500 Communications receiver or shortwave receiver - a general purpose audio receiver covering the LF, MF, shortwave , and VHF bands. Used mostly with a separate shortwave transmitter for two-way voice communication in communication stations, amateur radio stations, and for shortwave listening.
"Nuts, cheap, unrelenting, optimistic, sweet. She’s just crazy, Oh my God. But she writes great songs," the pop legend says about Warren in 'Diane Warren: Relentless'
Part 1 of the "Abbott Elementary" and "It's Always Sunny in Philadelphia" crossover aired on Wednesday, Jan. 8, at 8:30 p.m. ET/PT. The second crossover is expected later in 2025, but Season 17 of ...
Realistic was a private label consumer electronics brand produced by RadioShack. Initially only a home audio equipment brand, its product line expanded to include CB radios, walkie-talkies, and video camcorders by the 1980s. The brand was discontinued in 1994, but revived for a short time in 2016 for use on Bluetooth devices sold by the chain.
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