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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. Lafayette Radio Electronics - Wikipedia

    en.wikipedia.org/wiki/Lafayette_Radio_Electronics

    Lafayette ran into major financial difficulty when the Federal Communications Commission (FCC) expanded a new citizens band radio ("CB") spectrum to 40 channels in 1977. Lafayette's buyers had firm commitments to accept delivery of thousands of older design units capable of only 23 channels, and were not able to liquidate the inventory without ...

  5. Antenna types - Wikipedia

    en.wikipedia.org/wiki/Antenna_types

    This article provides a summary description of many of the different antenna types used for radio ... The price for the extra working frequencies is the needed ...

  6. 27 MHz CB27/81 Bandplan - Wikipedia

    en.wikipedia.org/wiki/27_MHz_CB27/81_Bandplan

    The 27 MHz CB27/81 Bandplan is a list of the channel frequencies for FM CB radio in the United Kingdom. Unlike CB usage in the United States , and subsequently elsewhere in the world, the original UK 40 channels progress in order with 10 kHz spacing.

  7. Antenna farm - Wikipedia

    en.wikipedia.org/wiki/Antenna_farm

    An antenna farm, satellite dish farm or dish farm is an area dedicated to television or radio telecommunications transmitting or receiving antenna equipment, such as C, K u or K a band satellite dish antennas, UHF/VHF/AM/FM transmitter towers or mobile cell towers.