Frequency allocation

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US frequency allocations chart, 2011

Use of radio frequency bands of the electromagnetic spectrum is regulated by governments in most countries, in a Spectrum management[1] process known as frequency allocation or spectrum allocation. Radio propagation does not stop at national boundaries. Giving technical and economic reasons, governments have sought to harmonise the allocation of RF bands and their standardization.

Bodies[edit]

A number standards bodies work on standards for frequency allocation, including:

In order to improve harmonisation in spectrum utilisation, the majority of service-allocations stipulated in this document[clarification needed] were incorporated in national Tables of Frequency Allocations and Utilisations which is with-in the responsibility of the appropriate national administration. The allocation might be primary, secondary, exclusive, and shared.

  • primary allocation: is indicated by writing in capital letters (see example below)
  • secondary allocation: is indicated by small letters
  • exclusive or shared utilization: is within the responsibility of administrations

However, military usage, in bands where there is civil usage, will be in accordance with the ITU Radio Regulations. In NATO countries military mobile utilizations will be in accordance with the NATO Joint Civ-il/Military Frequency Agreement (NJFA).

Example[edit]

Allocation to services
     Region 1           Region 2           Region 3     
135.7–137.8 kHz
FIXED
MARITIME MOBILE
Amateur
135.7–137.8 kHz
FIXED
MARITIME MOBILE
Amateur
135.7–137.8 kHz
FIXED
MARITIME MOBILE
RADIONAVIGATION
Amateur

Terminology[edit]

Frequency allocation is also a special term, used by national frequency assignment authorities. Other terms are:

ITU-terms pertaining to frequency regulation
Frequency
distribution to:
ITU languages ITU RR
(article)
French English Spanish Arabic Chinese Russian
Radiocommunication services attribution
(attribuer)
allocation
(to allocate)
attribucion
(attribuir)
распределение
(распределять)
1.16
Regions or countries allotisement
(allotir)
allotment
(to allot)
adjudication
(adjudicar)
выделение
(выделять)
1.17
Radio stations assignation
(assigner)
assignment
(to assign)
asignacion
(assignar)
присвоение
(присваивать)
1.18

See also[edit]

References[edit]

External links[edit]