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Frequency allocation
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<h2 id="itu-definition">ITU definition</h2> <p>The <a href="/facts/International_Telecommunication_Union/Yn8UKKkw">International Telecommunication Union</a> defines frequency allocation as being of "a given <a href="/facts/Frequency_band/94Rq1PkQ">frequency band</a> for the purpose of its use by one or more terrestrial or space radiocommunication services or the <a href="/facts/Radio_astronomy_service/TdjF4LgL">radio astronomy service</a> under specified conditions".<a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a> </p><p><i>Frequency allocation</i> is also a special term, used in national <a href="/facts/Frequency_administration/etDs5EYB">frequency administration</a>. Other terms are: </p> ITU-terms pertaining to frequency regulation<table><tbody><tr><td rowspan="2">Frequencydistribution to:</td><td colspan="6">ITU languages</td><td rowspan="2">ITU RR(article)</td></tr><tr><td>French</td><th>English</th><td>Spanish</td><td>Arabic</td><td>Chinese</td><td>Russian</td></tr><tr><th><a href="/facts/Radiocommunication_service/5UzT2yNd">Radiocommunication services</a></th><th>attribution(attribuer)</th><th>allocation(to allocate)</th><th>atribución(atribuir)</th><th></th><th>划分</th><th>распределение(распределять)</th><th>1.16</th></tr><tr><td>Regions or countries</td><td>allotissement(allotir)</td><td>allotment(to allot)</td><td>adjudicación(adjudicar)</td><td></td><td>分配</td><td>выделение(выделять)</td><td>1.17</td></tr><tr><td><a href="/facts/Radio_station/FLJVq8Ec">Radio stations</a></td><td>assignation(assigner)</td><td><a href="/facts/Frequency_assignment/n2tITQzs">assignment</a>(to assign)</td><td>asignación(asignar)</td><td></td><td>指配</td><td>присвоение(присваивать)</td><td>1.18</td></tr></tbody></table> <h2 id="bodies">Bodies</h2> <p>Several bodies set standards for frequency allocation, including: </p> <ul><li><a href="/facts/International_Telecommunication_Union/Yn8UKKkw">International Telecommunication Union</a> (ITU)</li> <li><a href="/facts/European_Conference_of_Postal_and_Telecommunications_Administrations/sLWSGI7P">European Conference of Postal and Telecommunications Administrations</a> (CEPT)</li> <li><a href="/facts/Inter-American_Telecommunication_Commission/RnmxAowb">Inter-American Telecommunication Commission</a> (CITEL)</li></ul> <p>To improve harmonisation in spectrum utilisation, most service allocations are incorporated in national Tables of Frequency Allocations and Utilisations within the responsibility of the appropriate national administration. Allocations are: </p> <ul><li>primary</li> <li>secondary</li> <li>exclusive or shared utilization, within the responsibility of national administrations.</li></ul> <p>Allocations of military usage will be in accordance with the ITU Radio Regulations. In NATO countries, military mobile utilizations are made in accordance with the <a href="/facts/NJFA/lY5b3qjW">NATO Joint Civil/Military Frequency Agreement</a> (NJFA). </p> <h2 id="examples">Examples</h2> <p>Some of the bands listed (e.g., amateur 1.8–29.7 MHz) have gaps / are not continuous allocations. </p> Common frequencies <a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a><table><tbody><tr><th>Source</th><th>Frequency (MHz)</th><th>Typical radiatedpower (kW)</th><th>Meters<p>(approx)</p></th></tr><tr><td><a href="/facts/Longwave/w4flmdvu">Longwave</a> <a href="/facts/Broadcast_band/rmc9YNsG">BCB</a> (EU)</td><td>0.150–0.285</td><td>320</td><td></td></tr><tr><td>AM <a href="/facts/Broadcast_band/rmc9YNsG">BCB</a> (EU & J)</td><td>0.525–1.605</td><td>500</td><td>630</td></tr><tr><td>AM <a href="/facts/Broadcast_band/rmc9YNsG">BCB</a> (US)</td><td>0.530–1.710</td><td>50</td><td></td></tr><tr><td><a href="/facts/Amateur_radio/cBsMyamV">Amateur</a></td><td>1.8–29.7</td><td>0.16 (mobile)</td><td>15</td></tr><tr><td><a href="/facts/Citizens_band_radio/tCSXXuTb">Citizens band</a></td><td>26.9–27.4</td><td>0.004</td><td>12</td></tr><tr><td><a href="/facts/Amateur_radio/cBsMyamV">Amateur</a></td><td>28–30</td><td>0.2 (mobile)</td><td>10</td></tr><tr><td>Land mobile</td><td>29–54</td><td>0.1</td><td></td></tr><tr><td><a href="/facts/Amateur_radio/cBsMyamV">Amateur</a></td><td>50–54</td><td>0.2 (mobile)</td><td>6</td></tr><tr><td>TV low VHF</td><td>54–88</td><td>100</td><td></td></tr><tr><td>Land mobile (EU)</td><td>65–85</td><td>0.1</td><td></td></tr><tr><td>FM <a href="/facts/Broadcast_band/rmc9YNsG">BCB</a> (J)</td><td>76–90</td><td>44</td><td></td></tr><tr><td>FM <a href="/facts/Broadcast_band/rmc9YNsG">BCB</a> (US & EU)</td><td>88–108</td><td>105</td><td></td></tr><tr><td>Aircraft</td><td>108–136</td><td>1</td><td></td></tr><tr><td>Land mobile (EU)</td><td>120–160</td><td>0.1</td><td></td></tr><tr><td>Land mobile</td><td>132–174</td><td>18–100</td><td></td></tr><tr><td>Land mobile (J)</td><td>142–170</td><td></td><td></td></tr><tr><td><a href="/facts/Amateur_radio/cBsMyamV">Amateur</a></td><td>144–148</td><td>0.2 (mobile)</td><td>2</td></tr><tr><td>TV high VHF</td><td>174–216</td><td>316</td><td></td></tr><tr><td>Land mobile</td><td>216–222</td><td>0.2</td><td></td></tr><tr><td><a href="/facts/Amateur_radio/cBsMyamV">Amateur</a></td><td>222–225</td><td>0.1 (mobile)</td><td>1.25</td></tr><tr><td>Land mobile (J)</td><td>335–384</td><td></td><td></td></tr><tr><td>Land mobile</td><td>406–512</td><td>0.1</td><td></td></tr><tr><td>Land mobile (J)</td><td>450–470</td><td></td><td>.70</td></tr><tr><td><a href="/facts/Amateur_radio/cBsMyamV">Amateur</a></td><td>430–450</td><td>0.1 (mobile)</td><td></td></tr><tr><td>TV UHF</td><td>470–806</td><td>5000</td><td></td></tr><tr><td>Land mobile</td><td>806–947</td><td>0.035</td><td>.33</td></tr><tr><td>Cellular AMPS</td><td>806–947</td><td>0.003</td><td>.33</td></tr><tr><td>AmateurLand mobileGPS</td><td>1200–1600</td><td></td><td>.23</td></tr><tr><td>Cellular PCS</td><td>1700–2000</td><td>0.003</td><td></td></tr><tr><td><a href="/facts/ISM_band/8r8D1WB7">ISM</a><a href="/facts/Bluetooth/sWAjpMrj">Bluetooth</a><a href="/facts/Wi-Fi/u94quCsx">Wi-Fi</a></td><td>2400–2500</td><td>0.0000025</td><td></td></tr></tbody></table> <ul><li>BCB is an abbreviation for <a href="/facts/Broadcast_band/rmc9YNsG">broadcast band</a>, for commercial radio news and music broadcasts.</li></ul> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/Spectrum_management/etDs5EYB">Spectrum management</a></li> <li><a href="/facts/Amateur_radio_frequency_allocations/yUEeLTb9">Amateur radio frequency allocations</a></li></ul> <h2 id="external-links">External links</h2> <ul><li><a href="http://www.itu.int">International Telecommunication Union (ITU)</a></li> <li><a href="https://www.itu.int/en/publications/ITU-R/Pages/publications.aspx?lang=en&media=electronic&parent=R-REG">ITU Radio Regulations - Volume 1 (Article 5)</a> international table of frequency allocation by <a href="/facts/ITU_Region/yJLVdVWD">ITU Region</a>. Alternative at <a href="http://handle.itu.int/11.1002/pub/80da2b36-en">ITU persistent link</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Haim, Mazar (2008-08-01). An Analysis of Regulatory Frameworks for Wireless Communications, Societal Concerns and Risk: The Case of Radio Frequency (RF) Allocation and Licensing (PDF). Middlesex University. <a href="http://www.moc.gov.il/new/documents/frequences/MazarThesisOct08.pdf" target="_blank">http://www.moc.gov.il/new/documents/frequences/MazarThesisOct08.pdf</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.16, definition: allocation (of a frequency band). <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>"EMC Design Guide for PCB" (PDF). Ford EMC. 2003. Archived (PDF) from the original on 10 Dec 2023. <a href="http://www.fordemc.com/docs/download/EMC%20Design%20Guide%20for%20PCB.pdf" target="_blank">http://www.fordemc.com/docs/download/EMC%20Design%20Guide%20for%20PCB.pdf</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> </ol>