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  2. Base station - Wikipedia

    en.wikipedia.org/wiki/Radio_base_station

    In amateur radio, a base station also communicates with mobile rigs but for hobby or family communications. Amateur systems sometimes serve as dispatch radio systems during disasters, search and rescue mobilizations, or other emergencies. An Australian UHF CB base station is another example of part of a system used for hobby or family ...

  3. 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.

  4. Citizens band radio - Wikipedia

    en.wikipedia.org/wiki/Citizens_band_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.

  5. Radiotelephone - Wikipedia

    en.wikipedia.org/wiki/Radiotelephone

    Radiotelephony refers specifically to two-way radio systems for bidirectional person-to-person voice communication between separated users, such as CB radio or marine radio. In spite of the name, radiotelephony systems are not necessarily connected to or have anything to do with the telephone network , and in some radio services, including GMRS ...

  6. Radio repeater - Wikipedia

    en.wikipedia.org/wiki/Radio_repeater

    A radio repeater is a combination of a radio receiver and a radio transmitter that receives a signal and retransmits it, so that two-way radio signals can cover longer distances. A repeater sited at a high elevation can allow two mobile stations, otherwise out of line-of-sight propagation range of each other, to communicate. [ 1 ]

  7. Cell Broadcast - Wikipedia

    en.wikipedia.org/wiki/Cell_Broadcast

    A Cell Broadcast Centre (CBC), a system which is the source of SMS-CB message, is connected to a Base Station Controller (BSC) in GSM networks, to a Radio Network Controller (RNC) in UMTS networks, to a Mobility Management Entity (MME) in LTE (telecommunication) networks or to a core Access and Mobility management Function (AMF) in 5G networks.

  8. Radiotelephony procedure - Wikipedia

    en.wikipedia.org/wiki/Radiotelephony_procedure

    Radio call signs are a globally unique identifier assigned to all stations that are required to obtain a license in order to emit RF energy. The identifiers consist of from 3 to 9 letters and digits, and while the basic format of the call signs are specified by the ITU-R Radio Regulations, Article 19, Identification of stations, [5] the details are left up to each country's radio licensing ...

  9. 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 ...