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[[File:Zuteilungsurkunde 2.jpg|thumb|German frequency assignment document <small>({{Lang-de|Zuteilungsurkunde}})</small>]]

'''Frequency assignment''' is the authorization of use of a particular radio frequency.

In Article 1.18 of the [[International Telecommunication Union|International Telecommunication Union's]] (ITU) [[ITU Radio Regulations|Radio Regulations]] (RR),<ref>ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.18, definition: ''assignment (of a radio frequency or radio frequency channel)''</ref> the process is defined as "Authorization given by a [[frequency administration]] for a [[radio station]] to use a [[radio frequency]] or radio frequency channel under specified conditions".

==Daily impact==
Every day, users rely on assignment of frequencies for efficient use of such devices as: 
* cell phone
* cordless phone
* garage door opener
* car key [[remote control]]
* [[Broadcasting|broadcast television and audio]]
* [[Radio clock#List of radio time signal stations|Standard time broadcast]]
* vehicle-speed [[radar]], air traffic radar, weather radar
* mobile radio
* [[Global Positioning System]] (GPS) navigation
* satellite TV broadcast reception; also backend signal dissemination
* [[Microwave oven]]
* [[Bluetooth]]
* [[Wi-Fi]]
* [[Zigbee]]
* [[RFID]] devices such as active badges, passports, wireless gasoline token, no-contact credit-cards, and product tags
* toll-road payment vehicle transponders
* [[Citizen's band]] radio and [[Family Radio Service]]
* [[Radio control]], including [[Radio-controlled model]] aircraft and vehicles
* wireless microphones and musical instrument links

''Frequency assignment'' is also a special term, used by national [[frequency administration]]s. For other terms see table below.

{| class="wikipedia sortable" border="1"
|-
|+ '''ITU-terms pertaining to frequency regulation'''
|-align="center"
|width="10%" style="background:#FF99CC;" rowspan="2"| Frequency<br />distribution to:
|width="60%" style="background:#A0E0A0;" align="center" colspan="6"| '''ITU languages'''
|width="5%" style="background:#B0C0B0;" rowspan="2"| ITU RR<br /><small>(article)</small>
 |-align="center" style="background:#A0E0A0;"
 | French 
 ! English 
 | Spanish || Arabic || Chinese || Russian
|-align="center" style="background:#cfcfcf;"
| [[Radiocommunication service]]s 
| attribution<br />(attribuer) 
| [[Frequency allocation|allocation]]<br />(to allocate)
| attribucion<br />(attribuir) 
|  ||
| распределение<br />(распределять)
| 1.16
|-align="center" style="background:#bfbfbf;"
| Regions or countries
| allotisement<br />(allotir)
| [[Frequency allotment|allotment]]<br />(to allot)
| adjudication<br />(adjudicar)
|  ||
| выделение<br />(выделять)
| 1.17
|-align="center" style="background:#afafaf;"
| [[Radio station]]s
| assignation<br />(assigner)
| <span style="color:#700;">'''assignment<br />(to assign)'''</span>
| asignacion<br />(assignar)
|  ||
|присвоение<br />(присваивать)
| 1.18
|}

==See also==
*[[Radio station]]
*[[Frequency administration]]
*[[Spectrum management]]
*[[Frequency coordinator]]
*[[Broadcast license]]
*[[Cellular frequencies]]
*[[Earth observation satellites transmission frequencies]]

== References / sources ==
<references />
* [http://www.itu.int International Telecommunication Union (ITU)]

{{Telecommunications}}

[[Category:International Telecommunication Union]]