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  2. CB radio in the United States - Wikipedia

    en.wikipedia.org/wiki/CB_radio_in_the_United_States

    The antenna may not be more than 20 feet (6.1 m) above the highest point of the structure it is mounted to, or the highest point of the antenna must not be more than 60 feet (18.3 m) above the ground (47 CFR 95.408(c)) if installed in a fixed location. [4] CB radios must include AM or SSB modulation and may include frequency modulation. [5]

  3. Citizens band radio - Wikipedia

    en.wikipedia.org/wiki/Citizens_band_radio

    After the 1973 oil crisis, the U.S. government imposed a nationwide 55 mph speed limit, and fuel shortages and rationing were widespread.Drivers (especially commercial truckers) used CB radios to locate service stations with better supplies of fuel, to notify other drivers of speed traps, and to organize blockades and convoys in a 1974 strike protesting the new speed limit and other trucking ...

  4. Radio Emergency Associated Communication Teams - Wikipedia

    en.wikipedia.org/wiki/Radio_Emergency_Associated...

    Hallicrafters Radio sponsored the founding of REACT in April, with Kreer serving as its executive director. 1967: REACT approached the FCC for a designated CB Emergency Channel. 1969: REACT gained General Motors Research Labs as its new sponsor. 1970: CB-9 was designated the 'Emergency and Travelers' Assistance Channel' by the FCC.

  5. Antenna types - Wikipedia

    en.wikipedia.org/wiki/Antenna_types

    This subsection could also be named "phased arrays", a type of composite directional antenna where the various component simple antennas are laid out a large fraction of a wavelength apart, with each antenna's feedline's phase individually shifted, so that the signal from a radio wave moving in some selected direction across the layout of the ...

  6. 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 ...

  7. Citizens Broadband Radio Service - Wikipedia

    en.wikipedia.org/wiki/Citizens_Broadband_Radio...

    Citizens Broadband Radio Service (CBRS) is a 150 MHz wide broadcast band of the 3.5 GHz band (3550 MHz to 3700 MHz) in the United States. [1] In 2017, the US Federal Communications Commission (FCC) completed a process which began in 2012 to establish rules for commercial use of this band, while reserving parts of the band for the US Federal Government to limit interference with US Navy radar ...

  8. Transmitter hunting - Wikipedia

    en.wikipedia.org/wiki/Transmitter_hunting

    In mobile transmitter hunts, directional antennas are often turned by hand while the vehicle is in motion. Some radio direction finding equipment popular with mobile transmitter hunters operates on the time difference of arrival principal. Two identical antennas are mounted a precise distance apart from one another.

  9. Midland Radio - Wikipedia

    en.wikipedia.org/wiki/Midland_Radio

    Midland Radio is the official communication sponsor of Jeep Jamboree, which now is in a transition to switch from CB to MicroMobile Radios. [2] CB Radios. Midland offers classic and portable CB Radios; Business Radios. Midland Radio has three product lines within their business sector - Heavy Duty, Medium Duty and Light Duty; Portable Power

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