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  2. Radiotelephony procedure - Wikipedia

    en.wikipedia.org/wiki/Radiotelephony_procedure

    Similarly, the U.S. military radio procedures recommend headsets with noise-cancelling microphones: Use of Audio Equipment. In many situations, particularly in noisy or difficult conditions, the use of headsets fitted with a noise cancelling microphone is preferable to loudspeakers as a headset will aid concentration and the audibility of the ...

  3. Vintage amateur radio - Wikipedia

    en.wikipedia.org/wiki/Vintage_amateur_radio

    "AM'er" Joe Walsh WB6ACU on the air Audio recording of Joe Walsh on the air. Amplitude modulation (AM) was once the main voice mode in amateur radio before being superseded by Single-sideband modulation (SSB). But AM has recently become a nostalgic specialty interest on the shortwave ham bands. [5]

  4. Realistic (brand) - Wikipedia

    en.wikipedia.org/wiki/Realistic_(brand)

    Quatravox was the name of Realistic's synthesized four-channel output version of quadraphonic sound, which used Hafler circuitry to reproduce ambient sounds recorded by the microphones 180° out-of-phase with the intended recording (sounds recorded from opposite the microphone from the performers, i.e., studio echo, audience noise, etc.) and ...

  5. Kenwood Corporation - Wikipedia

    en.wikipedia.org/wiki/Kenwood_Corporation

    Kenwood manufactures audio equipment such as AM/FM stereo receivers, cassette tape decks/recorders, amateur radio (ham) equipment, radios, cellular phones, speakers, and other consumer electronics. TRIO TS-520S, HF transceiver, manufactured in the 1970s and 1980s by the Trio-Kenwood Corporation

  6. From NEPA to the North Pole: Ham radio lets kids talk to Santa

    www.aol.com/nepa-north-pole-ham-radio-010100465.html

    Through Dec. 24, children can talk to Santa — all they need is access to amateur radio equipment. Children, also known as “little harmonics” in amateur radio lingo, can call “the North ...

  7. Heil Sound - Wikipedia

    en.wikipedia.org/wiki/Heil_Sound

    Heil Sound Communications, Inc is an American manufacturer of professional audio equipment based in Fairview Heights, Illinois.The company was founded by Bob Heil in 1966, and is well known for inventions in live sound, the Heil Talk Box and a variety of high-quality microphones and headsets for use in commercial and amateur radio.

  8. Amateur radio - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio

    Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communications. [1]

  9. Lafayette Radio Electronics - Wikipedia

    en.wikipedia.org/wiki/Lafayette_Radio_Electronics

    "Wholesale Radio Service" was established in the early 1920s by Abraham Pletman in New York City. Radios sold by the company were trademarked “Lafayette” in July 1931. Following a Federal Trade Commission action in 1935, Wholesale Radio Service became "Radio Wire Television, Inc.". A 1939 company catalog bore the names Radio Wire Television ...

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