Editing Emergency position-indicating radiobeacon (section)

==Frequencies==
Distress beacons transmit [[distress signal]]s on the following key frequencies; the frequency used distinguishes the capabilities of the beacon. A ''recognized'' beacon can operate on one of the three (currently) [[Cospas-Sarsat]] satellite-compatible frequencies. In the past, other frequencies were also used as a part of the [[search and rescue]] system.

===Cospas-Sarsat (satellite) compatible beacon frequencies===
* see above for transmission schedule
* 406&nbsp;MHz [[UHF]]- [[carrier signal]] at 406.025-406.076&nbsp;MHz ± 0.005&nbsp;MHz<ref name="autogenerated2">https://web.archive.org/web/20060520033357/http://www.cospas-sarsat.com/DocumentsRSeries/r9oct28.pdf{{Dead link|date=July 2022 |fix-attempted=yes}}</ref>
Channel frequency (status)<ref>{{cite web |url=http://www.cospas-sarsat.int/images/stories/SystemDocs/Current/T012-OCT-2014.pdf |title=COSPAS-SARSAT 406 MHz FREQUENCYMANAGEMENT PLAN C/S T.012 Issue 1 – Revision 10 |date=October 2014 |website=[[International Cospas-Sarsat Programme]]}}</ref><ref>{{cite web |url=http://www.icao.int/safety/acp/ACPWGF/ACP-WG-F-22/ACP-WGF22-IP11-9718_5ed_unedited_version_en.pdf |id=Doc 9718-AN/957 |title=Handbook on Radio Frequency Spectrum Requirements for Civil Aviation including Statement of Approved ICAO Policies |edition=Fifth |date=2009 |publisher=[[ICAO]]}}</ref>
* Ch-1 A: 406.022&nbsp;MHz (reference)
* Ch-2 B: 406.025&nbsp;MHz (in use today)
* Ch-3 C: 406.028&nbsp;MHz (in use today) 
* Ch-4 D: 406.031&nbsp;MHz
* Ch-5 E: 406.034&nbsp;MHz
* Ch-6 F: 406.037&nbsp;MHz (in use today) 
* Ch-7 G: 406.040&nbsp;MHz (in use today)
* Ch-8 H: 406.043&nbsp;MHz 
* Ch-9 I: 406.046&nbsp;MHz 
* Ch-10 J: 406.049&nbsp;MHz (operational at a future date)
* Ch-11 K: 406.052&nbsp;MHz (operational at a future date)
* Ch-12 L: 406.055&nbsp;MHz
* Ch-13 M: 406.058&nbsp;MHz
* Ch-14 N: 406.061&nbsp;MHz (operational at a future date)
* Ch-15 O: 406.064&nbsp;MHz (operational at a future date)
* Ch-16 P: 406.067&nbsp;MHz
* Ch-17 Q: 406.070&nbsp;MHz
* Ch-18 R: 406.073&nbsp;MHz (operational at a future date)
* Ch-19 S: 406.076&nbsp;MHz (operational at a future date)

===Cospas-Sarsat unsupported beacon frequencies===
* [[Marine VHF radio]] channels 15/16 – these channels are used only on the obsolete Class C EPIRBs
* The obsolete [[Inmarsat-E]] beacons transmitted to [[Inmarsat]] satellites on 1646&nbsp;MHz UHF.
* 121.5&nbsp;MHz [[VHF]] ± 6 [[kHz]] (frequency band protected to ±50&nbsp;kHz)<ref name="autogenerated6">{{Cite web|url=http://www.strategis.ic.gc.ca/epic/site/smt-gst.nsf/vwapj/rss287e.pdf/$FILE/rss287e.pdf|archive-url=https://wayback.archive-it.org/all/20110706181625/http://www.strategis.ic.gc.ca/epic/site/smt-gst.nsf/vwapj/rss287e.pdf/$FILE/rss287e.pdf|url-status=dead|archive-date=July 6, 2011|title=RSS-187, Emergency Position Indicating Radio Beacons, Emergency Locator Transmitters, Personal Locator Beacons, and Maritime Survivor Locator Devices<!-- Bot generated title -->}}</ref> (Satellite detection ceased on 1 February 2009,<ref>{{cite journal|journal=Sport Aviation|date=March 2009|page=10}}</ref> but this frequency is still used for short-range location during a search and rescue operation)
* 243.0&nbsp;MHz UHF ± 12&nbsp;kHz (frequency band protected to ± 100&nbsp;kHz)<ref name="autogenerated6" /><ref>{{Cite web|url=http://www.aviationsafety.co.nz/KANNAD_406_AS.htm|title=KANNAD 406 AS<!-- Bot generated title -->|access-date=2007-10-01|archive-date=2007-10-09|archive-url=https://web.archive.org/web/20071009030950/http://www.aviationsafety.co.nz/KANNAD_406_AS.htm|url-status=dead}}</ref> (prior to 1 February 2009 – COSPAS-SARSAT Compatible)