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  2. Frequency synthesizer - Wikipedia

    en.wikipedia.org/wiki/Frequency_synthesizer

    A frequency synthesizer is an electronic circuit that generates a range of frequencies from a single reference frequency. Frequency synthesizers are used in devices such as radio receivers, televisions, mobile telephones, radiotelephones, walkie-talkies, CB radios, cable television converter boxes, satellite receivers, and GPS systems.

  3. Bell 103 - Wikipedia

    en.wikipedia.org/wiki/Bell_103_modem

    Bell 103 modulation is still in use today, in shortwave radio, amateur radio, and some commercial applications.Its low signalling speed and use of audio frequencies makes it suitable for noisy or unreliable narrowband links.

  4. Amateur radio repeater - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio_repeater

    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.

  5. List of radios - Wikipedia

    en.wikipedia.org/wiki/List_of_radios

    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.

  6. List of amateur radio modes - Wikipedia

    en.wikipedia.org/wiki/List_of_amateur_radio_modes

    Morse code is called the original digital mode. Radio telegraphy, designed for machine-to-machine communication is the direct on / off keying of a continuous wave carrier by Morse code symbols, often called amplitude-shift keying or ASK, may be considered to be an amplitude modulated mode of communications, and is rightfully considered the first digital data mode.

  7. List of amateur radio software - Wikipedia

    en.wikipedia.org/wiki/List_of_amateur_radio_software

    MacLoggerDX is a full-featured amateur radio contact logger for macOS with Transceiver control, Rotor control, Callbook lookup, QSL handling (Hardcopy / LoTW / eQSL / Club Log), DX Cluster and spotting, and basic contesting support.

  8. Frequency modulation - Wikipedia

    en.wikipedia.org/wiki/Frequency_modulation

    Frequency modulation is widely used for FM radio broadcasting. It is also used in telemetry, radar, seismic prospecting, and monitoring newborns for seizures via EEG, [3] two-way radio systems, sound synthesis, magnetic tape-recording systems and some video-transmission systems.

  9. Realistic Concertmate MG-1 - Wikipedia

    en.wikipedia.org/wiki/Realistic_Concertmate_MG-1

    The Realistic Concertmate MG-1 is an analog synthesizer co-developed by Tandy and Moog Music as a basic, low-priced synthesizer to be sold by Radio Shack under their "Realistic" brand. With estimated unit sales of 23,000 from 1982 to 1983, the MG-1 became the best-selling synthesizer ever manufactured by Moog Music, [ 2 ] and is one of the most ...

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