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Revision as of 14:00, 30 August 2016 by Dcowan38(talk | contribs)(Updated for new Canada band plan.)
The WARC bands are three portions of the shortwave radio spectrum used by licensed and/or certified amateur radio operators. They consist of 30 meters (10.100–10.150 MHz), 17 meters (18.068–18.168 MHz) and 12 meters (24.890–24.990 MHz).[1][2] They were named after the World Administrative Radio Conference, which in 1979 created a worldwide allocation of these bands for amateur use. The bands were opened for use in the early 1980s. Due to their relatively small bandwidth of 100 kHz or less, there is a sort of gentlemen's agreement that the WARC bands may not be used for general contesting. This agreement has been codified in official recommendations, such as the IARU Region 1 HF Manager's Handbook, which states:
Contest activity shall not take place on the 10, 18 and 24 MHz bands.
Non-contesting radio amateurs are recommended to use the contest-free HF bands (30, 17 and 12m) during the largest international contests. (DV05_C4_Rev_07)[3]
Throughout most of the world, the 30 meter band cannot be used for "phone" (voice) communications except in emergency situations. However, part of Region 1 (Africa, south of the equator, during daylight hours) is permitted to use phone.[4] The USA limits amateur radio users to 200 watts peak envelope power on this band.[5][6]
History
This section needs expansion. You can help by adding to it. (January 2012)
Canada is part of region 2 and as such is subject to the IARU band plan. Radio Amateurs of Canada offers the bandplan below as a recommendation for use by radio amateurs in that country but it does not have the force of law and should only be considered a suggestion or guideline.
Canada is part of region 2 and as such is subject to the IARU band plan. Radio Amateurs of Canada offers the bandplan below as a recommendation for use by radio amateurs in that country but it does not have the force of law and should only be considered a suggestion or guideline.
The United States is part of ITU Region 2 and as such is subject to the IARU band plan. The Amateur Radio Relay League offers the bandplan [1]below as a recommendation for use by radio amateurs in that country but it does not have the force of law and should only be considered a suggestion or guideline.
License class
18.068-18.110
18.110-18.168
Extra, Advanced, General
CW, narrow-band digital
CW, phone
IARU Region 3
License class
18.068-18.095
18.095-18.105
18.105-18.1095
18.1095-18.1105
18.1105-18.168
Effective as of 2009
CW Only
CW, narrow-band digital
CW, narrow-band digital, wide band digital
Beacons
All modes
30 metre band plan
IARU Region 1
License class
10.100-10.130
10.130-10.150
Effective 1 Jun 2016
CW Only
CW, narrow-band digital
SSB may be used during emergencies involving the immediate safety of life and property and only by stations actually involved in the handling of emergency traffic.
The band segment 10.120 to 10.140 may only be used for SSB transmissions in the area of Africa south of the equator during local daylight hours.
Canada is part of region 2 and as such is subject to the IARU band plan. Radio Amateurs of Canada offers the bandplan below as a recommendation for use by radio amateurs in that country but it does not have the force of law and should only be considered a suggestion or guideline.
Some administrations have authorized spectrum for amateur use in this region; others have declined to regulate frequencies above 300 GHz.
[v] All allocations are subject to variation by country. For simplicity, only common allocations found internationally are listed. See a band's article for specifics.
[w] HF allocation created at the 1979 World Administrative Radio Conference. These are commonly called the "WARC bands".
[x] This is not mentioned in the ITU's Table of Frequency Allocations, but many individual administrations have commonly adopted this allocation under "Article 4.4".
[y] This includes a currently active footnote allocation mentioned in the ITU's Table of Frequency Allocations. These allocations may only apply to a group of countries.
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