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===ITU==={| class="wikitable" style="text-align:center"|+Table of ITU Radio Bands|-! Band Number !! Symbols !! Frequency Range !! Wavelength Range<sup>†</sup>|-| 4 || [[Very low frequency|VLF]] || 3 to 30 kHz || 10 to 100 km|-| 5 || [[Low frequency|LF]] || 30 to 300 kHz || 1 to 10 km|-| 6 || [[Medium frequency|MF]] || 300 to 3000 kHz || 100 to 1000 m|-| 7 || [[High frequency|HF]] || 3 to 30 MHz || 10 to 100 m|-| 8 || [[Very high frequency|VHF]] || 30 to 300 MHz || 1 to 10 m|-| 9 || [[Ultra high frequency|UHF]] || 300 to 3000 MHz || 10 to 100 cm|-| 10 || [[Super high frequency|SHF]] || 3 to 30 GHz || 1 to 10 cm|-| 11 || [[Extremely high frequency|EHF]] || 30 to 300 GHz || 1 to 10 mm|-| 12 || [[Tremendously high frequency|THF]] || 300 to 3000 GHz || 0.1 to 1 mm|-|}''<small>† This column does not form part of the table in Provision No. 2.1 of the Radio Regulations</small>''===IEEE==={| class="wikitable"|- "|+ Radar-frequency bands according to IEEE standard<ref name=ieee>[http://standards.ieee.org/findstds/standard/521-2002.html IEEE Std 521-2002 ''Standard Letter Designations for Radar-Frequency Bands''].</ref>|-! Band<br/>designation !! Frequency range !! <br/>{{Citation needed|date=September 2011}}|-| [[High frequency|HF]] || 0.003 to 0.03 GHz || High Frequency{{refn|name=ieee_names|Table 2 in <ref name=ieee />}}|-| [[Very high frequency|VHF]] || 0.03 to 0.3 GHz || Very High Frequency<ref name=ieee_names />|-| [[Ultra high frequency|UHF]] || 0.3 to 1 GHz || Ultra High Frequency<ref name=ieee_names />|-| [[L band#IEEE L band|L]] || 1 to 2 GHz || Long wave|-| [[S band|S]] || 2 to 4 GHz || Short wave|-| [[C band#IEEE C-band|C]] || 4 to 8 GHz || Compromise between S and X|-| [[X band|X]] || 8 to 12 GHz || Used in [[World War II|WW II]] for [[fire-control system|fire control]], X for cross (as in [[crosshair]]). Exotic.<ref name="Friedman2006">{{cite book|author=Norman Friedman|title=The Naval Institute Guide to World Naval Weapon Systems|url=http://books.google.com/books?id=4S3h8j_NEmkC&pg=PR13|year=2006|publisher=Naval Institute Press|isbn=978-1-55750-262-9|pages=xiii}}</ref> |-| [[Ku band|Ku]] || 12 to 18 GHz || Kurz-under|-| [[K band#IEEE K band|K]] || 18 to 27 GHz || [[German language|German]] Kurz (short)|-| [[Ka band|Ka]] || 27 to 40 GHz || Kurz-above|-| [[V band|V]] || 40 to 75 GHz || |-| [[W band|W]] || 75 to 110 GHz || W follows V in the [[alphabet]] <!-- guessed -->|-| [[Millimeter band|mm]] || 110 to 300 GHz​{{refn|group=note|The designation mm is also used to refer to the range from 30 to 300 GHz.<ref name=ieee />}} || Millimeter<ref name=ieee />|}{{reflist|group=note}}{{Multicol-break}}===EU, NATO, US ECM frequency designations===<!--[[NATO radio bands]] redirects here-->{| class="wikitable"|- "|+ Radar-frequency bands as defined by NATO for [[electronic countermeasures|ECM]] systems<ref name="BelovSmolskiy2012">{{cite book|author1=Leonid A. Belov|author2=Sergey M. Smolskiy|author3=Victor N. Kochemasov|title=Handbook of RF, Microwave, and Millimeter-Wave Components|url=http://books.google.com/books?id=bHhYjINB6KMC&pg=PA28|year=2012|publisher=Artech House|isbn=978-1-60807-209-5|pages=27–28}}</ref><ref name="Friedman2006">{{cite book|author=Norman Friedman|title=The Naval Institute Guide to World Naval Weapon Systems|url=http://books.google.com/books?id=4S3h8j_NEmkC&pg=PR14|year=2006|publisher=Naval Institute Press|isbn=978-1-55750-262-9|pages=xiii–xiv}}</ref>|-! Band !! Frequency range|-| [[A band (radio)|A band]] || 0 to 0.25 GHz |-| [[B band]] || 0.25 to 0.5 GHz |-| [[C band#NATO C-band|C band]] || 0.5 to 1.0 GHz|-| [[D band]] || 1 to 2 GHz|-| [[E band]] || 2 to 3 GHz|-| [[F band]] || 3 to 4 GHz|-| [[G band]] || 4 to 6 GHz|-| [[H band#Radio|H band]] || 6 to 8 GHz|-| [[I band]] || 8 to 10 GHz|-| [[J band#NATO|J band]] || 10 to 20 GHz|-| [[K band#NATO K band|K band]] || 20 to 40 GHz|-| [[L band#NATO L band|L band]] || 40 to 60 GHz|-| [[M band#Radio|M band]] || 60 to 100 GHz|}{{Multicol-break}}===Waveguide frequency bands==={{see also|Waveguide (electromagnetism)#Waveguide in practice}}{| class="wikitable"|- "! Band !! Frequency range <ref>[http://www.microwaves101.com/encyclopedia/waveguidedimensions.cfm www.microwaves101.com "Waveguide frequency bands and interior dimensions"]</ref>|-| [[R band]] || 1.70 to 2.60 GHz |-| D band || 2.20 to 3.30 GHz|-| S band || 2.60 to 3.95 GHz|-| E band || 3.30 to 4.90 GHz|-| G band || 3.95 to 5.85 GHz|-| F band || 4.90 to 7.05 GHz|-| C band || 5.85 to 8.20 GHz|-| H band || 7.05 to 10.10 GHz|-| [[X band]] || 8.2 to 12.4 GHz|-| [[Ku band]] || 12.4 to 18.0 GHz|-| [[K band]] || 15.0 to 26.5 GHz|-| [[Ka band]] || 26.5 to 40.0 GHz|-| [[Q band]] || 33 to 50 GHz|-| [[U band]] || 40 to 60 GHz|-| [[V band]] || 50 to 75 GHz|-| [[W band]] || 75 to 110 GHz|-| [[F band]] || 90 to 140 GHz|-| [[D band]] || 110 to 170 GHz|-| [[Y band]] || 325 to 500 GHz|}{{Multicol-end}}===Comparison of radio band designation standards==={| class="wikitable"|-! rowspan="2" colspan="2" | Frequency! rowspan="2" | IEEE<ref name=ieee />! rowspan="2" | EU,<br>NATO,<br>US ECM! colspan="2" | ITU|-! no.! abbr.|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" || style="border-left: none; width: 0.5em" ||| rowspan="9" | [[A band (radio)|A]]|| [[Tremendously low frequency|TLF]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">3 Hz</span>| style="border-left: none" ||| align="right" | [[Extremely low frequency|1]]| [[Extremely low frequency|ELF]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">30 Hz</span>| style="border-left: none" ||| align="right" | [[Super low frequency|2]]| [[Super low frequency|SLF]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">300 Hz</span>| style="border-left: none" ||| align="right" | [[Ultra low frequency|3]]| [[Ultra low frequency|ULF]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">3 kHz</span>| style="border-left: none" ||| align="right" | [[Very low frequency|4]]| [[Very low frequency|VLF]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">30 kHz</span>| style="border-left: none" ||| align="right" | [[Low frequency|5]]| [[Low frequency|LF]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">300 kHz</span>| style="border-left: none" ||| align="right" | [[Medium frequency|6]]| [[Medium frequency|MF]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">3 MHz</span>| style="border-left: none" || [[High frequency|HF]]| align="right" | [[High frequency|7]]| [[High frequency|HF]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">30 MHz</span>| style="border-left: none" || rowspan="2" | [[Very high frequency|VHF]]| rowspan="2" align="right" | [[Very high frequency|8]]| rowspan="2" | [[Very high frequency|VHF]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">250 MHz</span>| style="border-left: none" || rowspan="2" | [[B band|B]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">300 MHz</span>| style="border-left: none" || rowspan="2" | [[Ultra high frequency|UHF]]| rowspan="4" align="right" | [[Ultra high frequency|9]]| rowspan="4" | [[Ultra high frequency|UHF]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">500 MHz</span>| style="border-left: none" || [[C band|C]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">1 GHz</span>| style="border-left: none" || [[L band|L]]| [[D band|D]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">2 GHz</span>| style="border-left: none" || rowspan="2" | [[S band|S]]| [[E band|E]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">3 GHz</span>| style="border-left: none" || [[F band|F]]| rowspan="9" align="right" | [[Super high frequency|10]]| rowspan="9" | [[Super high frequency|SHF]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">4 GHz</span>| style="border-left: none" || rowspan="2" | [[C band|C]]| [[G band|G]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">6 GHz</span>| style="border-left: none" || [[H band|H]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">8 GHz</span>| style="border-left: none" || rowspan="2" | [[X band|X]]| [[I band|I]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">10 GHz</span>| style="border-left: none" || rowspan="3" | [[J band|J]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">12 GHz</span>| style="border-left: none" || [[Ku band|Ku]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">18 GHz</span>| style="border-left: none" || rowspan="2" | [[K band|K]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">20 GHz</span>| style="border-left: none" || rowspan="3" | [[K band|K]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">27 GHz</span>| style="border-left: none" || rowspan="2" | [[Ka band|Ka]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">30 GHz</span>| style="border-left: none" || rowspan="6" align="right" | [[Extremely high frequency|11]]| rowspan="6" | [[Extremely high frequency|EHF]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">40 GHz</span>| style="border-left: none" || rowspan="2" | [[V band|V]]| [[L band|L]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">60 GHz</span>| style="border-left: none" || rowspan="2" | [[M band|M]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">75 GHz</span>| style="border-left: none" || rowspan="2" | [[W band|W]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">100 GHz</span>| style="border-left: none" || rowspan="2" ||-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">110 GHz</span>| style="border-left: none" || [[Millimeter band|mm]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">300 GHz</span>| style="border-left: none" |||| align="right" | [[Tremendously high frequency|12]]| [[Tremendously high frequency|THF]]|-| style="border-top: none; border-bottom: none; border-right: none; text-align: right; vertical-align: top" | <span style="position: relative; top: -2ex">3 THz</span>| style="border-left: none" ||||||}