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  2. CB radio in the United States - Wikipedia

    en.wikipedia.org/wiki/CB_radio_in_the_United_States

    Adjacent frequencies are often used by illegal operators using modified CB or amateur radio equipment. Operators sometimes refer to this activity as freebanding. The Industrial/Business Radio Pool of the Private Land Mobile Radio Services has several channels just above the Citizen's Band, at 27.430, 27.450, 27.470, 27.490, 27.510, and 27.530 MHz.

  3. Citizens band radio - Wikipedia

    en.wikipedia.org/wiki/Citizens_band_radio

    Cobra 50 WX ST Handheld CB Radio. Citizens band radio (CB radio) is a land mobile radio system, a system allowing short-distance one-to-many bidirectional voice communication among individuals, using two-way radios operating near 27 MHz (or the 11-m wavelength) in the high frequency or shortwave band. Citizens band is distinct from other ...

  4. CB radio in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/CB_radio_in_the_United_Kingdom

    The UK Government eventually legalised CB radio, and on 2 November 1981 a CB service was introduced on a frequency band and offset that is incompatible with the imported American radios. At the same time the ownership of non-UK approved 27 MHz transceivers was made illegal except for those obtained by UK radio amateurs holding a UK "A" (HF ...

  5. Shortwave bands - Wikipedia

    en.wikipedia.org/wiki/Shortwave_bands

    Citizens band (CB) allocation in most countries, is slightly higher in frequency than the broadcasting 11m band. There are reports of pirate CB radio users operating equipment on frequencies as low as 25.615 MHz. In the United States, this band is also shared with remote pickup units (RPUs), from 25.87 to 26.1 MHz in FM mode.

  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. These channels apply to UK-only radios meeting MPT-1320 (marked CB 27/81) [1] and MPT-1382 ...

  7. Personal radio service - Wikipedia

    en.wikipedia.org/wiki/Personal_radio_service

    Examples of standardized services include PMR446 and FM Citizens Band Radio (CB) in the EU and several other countries/regions. 26–27 MHz CB radio is the oldest personal radio service and is used in nearly every country worldwide, with many countries and regions copying the United States 40-channel frequency plan. In many countries, CB radio ...