Editing ISM radio band (section)

==Definition==
The ISM bands are defined by the [[ITU Radio Regulations]] (article 5) in footnotes 5.138, 5.150, and 5.280 of the [[Radio regulation in the United States|Radio Regulations]]. Individual countries' use of the bands designated in these sections may differ due to variations in national radio regulations.  Because communication devices using the ISM bands must tolerate any interference from ISM equipment, unlicensed operations are typically permitted to use these bands, since unlicensed operation typically needs to be tolerant of interference from other devices anyway.  The ISM bands share allocations with unlicensed and licensed operations; however, due to the high likelihood of harmful interference, licensed use of the bands is typically low.  In the United States, uses of the ISM bands are governed by [https://www.ecfr.gov/cgi-bin/text-idx?SID=5cd2e563d1078d1d7f4773f791173724&mc=true&node=pt47.1.18&rgn=div5 Part 18] of the [[Federal Communications Commission]] (FCC) rules, while [[Part 15 (FCC rules)|Part 15]] contains the rules for unlicensed communication devices, even those that share ISM frequencies. In Europe, the [[ETSI]] develops standards for the use of [[short-range devices]], some of which operate in ISM bands. The use of the ISM bands is regulated by the national spectrum regulation authorities that are members of the CEPT.

=== Frequency allocations ===
The allocation of radio frequencies is provided according to ''Article 5'' of the ITU Radio Regulations (edition 2012).<ref name="ITU-TFA">''[https://search.itu.int/history/HistoryDigitalCollectionDocLibrary/1.44.48.en.101.pdf ITU] Radio Regulations 2020, CHAPTER II – Frequencies, ARTICLE 5 Frequency allocations, Section IV – Table of Frequency Allocations''</ref>

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 are within the responsibilities of the appropriate national administrations. The allocation might be primary, secondary, exclusive, or shared. Exclusive or shared utilization is within the responsibility of administrations.

; ITU frequency allocations<ref name=ITU-TFA />:
{| class="wikitable sortable"
|-
!! colspan=2 data-sort-type="number" | Frequency range !! data-sort-type="number" | Center frequency
! data-sort-type="number" | Bandwidth !! Type !! class="unsortable" | Availability !! class="unsortable" | Primary user !! class="unsortable" | Other users
|-
|style="white-space: nowrap; text-align: right"| {{sort|6.765|6.765}} MHz || style="white-space: nowrap; text-align: right" | 6.795&nbsp;MHz 
| style="white-space: nowrap; text-align: right" |{{sort|6.78|6.78}} MHz
| style="white-space: nowrap; text-align: right" |{{sort|30|30}} kHz
! A 
| Subject to local acceptance || [[Fixed service]] || [[Mobile service]] 
|-
|style="white-space: nowrap; text-align: right"| {{sort|13.553|13.553}} MHz || style="white-space: nowrap; text-align: right"|  13.567&nbsp;MHz 
| style="white-space: nowrap; text-align: right" |{{sort|13.56|13.56}} MHz
| style="white-space: nowrap; text-align: right" |{{sort|14|14}} kHz
! B 
| Worldwide || Fixed || Mobile services except [[Aeronautical mobile (R) service]]
|-
|style="white-space: nowrap; text-align: right"| {{sort|26.957|26.957}} MHz ||style="white-space: nowrap; text-align: right"| 27.283&nbsp;MHz 
| style="white-space: nowrap; text-align: right" |{{sort|27.12|27.12}} MHz
| style="white-space: nowrap; text-align: right" |{{sort|326|326}} kHz
! B 
| Worldwide || Fixed & mobile service except [[Aeronautical mobile service]] || [[CB Radio]]
|-
|style="white-space: nowrap; text-align: right"| {{sort|40.66|40.66}} MHz ||style="white-space: nowrap; text-align: right"| 40.7&nbsp;MHz 
| style="white-space: nowrap; text-align: right" |{{sort|40.68|40.68}} MHz
| style="white-space: nowrap; text-align: right" |{{sort|40|40}} kHz
! B 
| Worldwide || || Fixed, mobile services & [[Earth exploration-satellite service]]
|-
|style="white-space: nowrap; text-align: right"| {{sort|433.05|433.05}} MHz ||style="white-space: nowrap; text-align: right"| 434.79&nbsp;MHz 
| style="white-space: nowrap; text-align: right" |{{sort|433.92|433.92}} MHz
| style="white-space: nowrap; text-align: right" |{{sort|1740|1.74}} MHz
! A 
| only in [[ITU region|Region 1]], subject to local acceptance
| [[Amateur service]] & [[radiolocation service]] || With provisions of footnote 5.280
|-
|style="white-space: nowrap; text-align: right"| {{sort|902|902}} MHz || style="white-space: nowrap; text-align: right" | 928&nbsp;MHz 
| style="white-space: nowrap; text-align: right" |{{anchor|915 MHz}}{{sort|915|915}} MHz
| style="white-space: nowrap; text-align: right" |{{sort|26000|26}} MHz
! B
|[[ITU region|Region 2]] only (with some exceptions) || Fixed || Mobile except aeronautical mobile & Radiolocation service; in Region 2 additional Amateur service
|-
|style="white-space: nowrap; text-align: right"| {{sort|2400|2.4}} GHz || style="white-space: nowrap; text-align: right" | 2.5&nbsp;GHz 
| style="white-space: nowrap; text-align: right" |{{sort|2450|2.45}} GHz
| style="white-space: nowrap; text-align: right" |{{sort|100000|100}} MHz
! B
| Worldwide || Fixed, mobile, radiolocation || Amateur & amateur-satellite service
|-
|style="white-space: nowrap; text-align: right"| {{sort|5725|5.725}} GHz ||style="white-space: nowrap; text-align: right"| 5.875&nbsp;GHz
| style="white-space: nowrap; text-align: right" |{{sort|5800|5.8}} GHz
| style="white-space: nowrap; text-align: right" |{{sort|150000|150}} MHz
! B
| Worldwide || [[Fixed-satellite service|Fixed-satellite]], radiolocation, mobile || Amateur & amateur-satellite service
|-
|style="white-space: nowrap; text-align: right"| {{sort|24000|24}} GHz ||style="white-space: nowrap; text-align: right"| 24.25&nbsp;GHz
| style="white-space: nowrap; text-align: right" |{{sort|24125|24.125}} GHz
| style="white-space: nowrap; text-align: right" |{{sort|250000|250}} MHz
! B
| Worldwide || Amateur, [[Amateur-satellite service|amateur-satellite]], radiolocation || Earth exploration-satellite service (active)
|-
|style="white-space: nowrap; text-align: right"| {{sort|61000|61}} GHz || style="white-space: nowrap; text-align: right" | 61.5&nbsp;GHz 
| style="white-space: nowrap; text-align: right" |{{sort|61250|61.25}} GHz
| style="white-space: nowrap; text-align: right" |{{sort|500000|500}} MHz
! A
| Subject to local acceptance || Fixed, [[Inter-satellite service|Inter-satellite]], mobile & radiolocation service
|-
|style="white-space: nowrap; text-align: right"| {{sort|122000|122}} GHz || style="white-space: nowrap; text-align: right" | 123&nbsp;GHz 
| style="white-space: nowrap; text-align: right" |{{sort|122500|122.5}} GHz
| style="white-space: nowrap; text-align: right" |{{sort|1000000|1}} GHz
! A
| Subject to local acceptance || Earth exploration satellite (passive), fixed, inter-satellite, mobile, [[Space research service|space research (passive)]] || Amateur service
|-
|style="white-space: nowrap; text-align: right"| {{sort|244000|244}} GHz ||style="white-space: nowrap; text-align: right"| 246&nbsp;GHz 
| style="white-space: nowrap; text-align: right" |{{sort|245000|245}} GHz
| style="white-space: nowrap; text-align: right" |{{sort|2000000|2}} GHz
! A
| Subject to local acceptance || radiolocation, [[radio astronomy]] || Amateur & amateur-satellite service
|}

'''Type A''' (footnote 5.138) = frequency bands are designated for ''ISM applications''. The use of these frequency bands for ISM applications shall be subject to special authorization by the administration concerned, in agreement with other administrations whose [[radiocommunication service]]s might be affected. In applying this provision, administrations shall have due regard to the latest relevant ITU-R Recommendations.

'''Type B''' (footnote 5.150) = frequency bands are also designated for ISM applications. Radiocommunication services operating within these bands must accept harmful interference which may be caused by these applications.

ITU RR, (Footnote 5.280) = In Germany, Austria, Bosnia and Herzegovina, Croatia, North Macedonia, Liechtenstein, Montenegro, Portugal, Serbia, Slovenia and Switzerland, the band 433.05–434.79&nbsp;MHz (center frequency 433.92&nbsp;MHz) is designated for ''ISM applications''. Radio communication services of these countries operating within this band must accept harmful interference which may be caused by these applications.

{{further|ISM applications}}