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  2. RF modulator - Wikipedia

    en.wikipedia.org/wiki/RF_modulator

    An RF modulator (radio frequency modulator) is an electronic device used to convert signals from devices such as media players, VCRs and game consoles to a format that can be handled by a device designed to receive a modulated RF input, such as a radio or television receiver. Its input is a baseband signal, which is used to modulate a radio ...

  3. Vintage amateur radio - Wikipedia

    en.wikipedia.org/wiki/Vintage_amateur_radio

    Vintage amateur radio is a subset of amateur radio hobby where enthusiasts collect, restore, preserve, build, and operate amateur radio equipment from bygone years, such as those using vacuum tube technology. Popular modes of operation include speaking over amplitude modulation (AM), and communicating using Morse code through continuous wave ...

  4. TRS-80 Model II - Wikipedia

    en.wikipedia.org/wiki/TRS-80_Model_II

    Detachable keyboard. Dimensions. 14 x 21 1/4 x 23 1/2 inch. The TRS-80 Model II is a computer system launched by Tandy in October 1979, and targeted at the small-business market. It is not an upgrade of the original TRS-80 Model I, but a new system. The Model II was succeeded by the compatible TRS-80 Model 12, Model 16, Model 16B, and the Tandy ...

  5. Tandy 1000 - Wikipedia

    en.wikipedia.org/wiki/Tandy_1000

    The earlier models of the Tandy 1000 have a composite video output, and can be used with a color or monochrome composite monitor, or a TV with an RF modulator. The original 1000 and SX has a light-pen port. Unlike most PC clones, several Tandy 1000 computers have MS-DOS built into ROM and can boot in a few seconds.

  6. Frequency modulation - Wikipedia

    en.wikipedia.org/wiki/Frequency_modulation

    Frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. The technology is used in telecommunications, radio broadcasting, signal processing, and computing. In analog frequency modulation, such as radio broadcasting, of an audio signal representing voice or music, the ...

  7. Tandy 2000 - Wikipedia

    en.wikipedia.org/wiki/Tandy_2000

    Tandy 2000. The Tandy 2000 is a personal computer introduced by Radio Shack in September 1983 based on the 8 MHz Intel 80186 microprocessor running MS-DOS. [ 2 ] By comparison, the IBM PC XT (introduced in March 1983) used the older 4.77 MHz Intel 8088 processor, and the IBM PC/AT (introduced in 1984) would later use the newer 6 MHz Intel 80286.

  8. TRS-80 - Wikipedia

    en.wikipedia.org/wiki/TRS-80

    Tandy/Radio Shack TRS-80 Model I. In the mid-1970s, Tandy Corporation's Radio Shack division was a successful American chain of more than 3,000 electronics stores. Among the Tandy employees who purchased a MITS Altair kit computer was buyer Don French, who began designing his own computer and showed it to the vice president of manufacturing John V. Roach, Tandy's former electronic data ...

  9. RadioShack - Wikipedia

    en.wikipedia.org/wiki/RadioShack

    radioshack.com. RadioShack (formerly written as Radio Shack) is an American electronics retailer which was established in 1921 as an amateur radio mail-order business. Its parent company, Radio Shack Corporation, was purchased by Tandy Corporation in 1962, shifting its focus from radio equipment to hobbyist electronic components.