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  2. Frequency allocation - Wikipedia

    en.wikipedia.org/wiki/Frequency_allocation

    Frequency allocation. Frequency allocation (or spectrum allocation) is the part of spectrum management dealing with the designation and regulation of the electromagnetic spectrum into frequency bands, normally done by governments in most countries. [1] Because radio propagation does not stop at national boundaries, governments have sought to ...

  3. Amateur radio frequency allocations - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio_frequency...

    e. Amateur radio frequency allocation is done by national telecommunication authorities. Globally, the International Telecommunication Union (ITU) oversees how much radio spectrum is set aside for amateur radio transmissions. Individual amateur stations are free to use any frequency within authorized frequency ranges; authorized bands may vary ...

  4. Radio spectrum - Wikipedia

    en.wikipedia.org/wiki/Radio_spectrum

    t. e. The radio bomboclat is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz ). Electromagnetic waves in this frequency range, called radio waves, are widely used in modern technology, particularly in telecommunication. To prevent interference between different users, the generation and transmission of ...

  5. Radiolocation - Wikipedia

    en.wikipedia.org/wiki/Radiolocation

    The allocation of radio frequencies is provided according to Article 5 of the ITU Radio Regulations (edition 2012). [3] In order to improve harmonisation in spectrum utilisation, the majority of service-allocations stipulated in this document were incorporated in national Tables of Frequency Allocations and Utilisations which is within the ...

  6. 80-meter band - Wikipedia

    en.wikipedia.org/wiki/80-meter_band

    The 80 meter or 3.5 MHz band is a span of radio frequencies allocated for amateur use, from 3.5–4.0 MHz in North and South America ( IARU and ITU Region 2); generally 3.5–3.8 MHz in Europe, Africa, and northern Asia ( Region 1); and 3.5–3.9 MHz in south and east Asia and the eastern Pacific ( Region 3). [a] The upper portion of the band ...

  7. FM broadcast band - Wikipedia

    en.wikipedia.org/wiki/FM_broadcast_band

    FM broadcast band. Graphical depiction of FM broadcasting allotments. The FM broadcast band is a range of radio frequencies used for FM broadcasting by radio stations. The range of frequencies used differs between different parts of the world. In Europe and Africa (defined as International Telecommunication Union (ITU) region 1) and in ...

  8. Spectrum management - Wikipedia

    en.wikipedia.org/wiki/Spectrum_management

    United States radio spectrum frequency allocations chart as of 2016. Spectrum management is the process of regulating the use of radio frequencies to promote efficient use and gain a net social benefit. The term radio spectrum typically refers to the full frequency range from 1 Hz to 3000 GHz (3 THz) that may be used for wireless communication ...

  9. Shortwave bands - Wikipedia

    en.wikipedia.org/wiki/Shortwave_bands

    Shortwave bands are frequency allocations for use within the shortwave radio spectrum (the upper medium frequency [MF] band and all of the high frequency [HF] band). Radio waves in these frequency ranges can be used for very long distance (transcontinental) communication because they can reflect off layers of charged particles in the ionosphere and return to Earth beyond the horizon, a ...

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