The World Administrative Radio Conference (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 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 5, 10, 18 and 24 MHz bands."[3]
Non-contesting radio amateurs are recommended to use the contest-free HF bands (30, 17, and 12m) during the largest international contests.[4]
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.
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.
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.
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.
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-meter band plan
IARU Region 1
License class
10.100-10.130
10.130-10.150
Effective 1 June 2016
CW Only
CW, narrow-band digital
Throughout most of the world, the 30 meter band generally cannot be used for "phone" (voice) communications. 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.
However, a part of Region 1 is permitted to use phone at certain times.[9] 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.
Australia (VK, region 3) has a unique set of privileges on 30 meters which allows voice operation on a section of the band for advanced license holders. The digital segment is 10.130-10.150 MHz. The current band plan has telephony from 10.120–10.135 MHz, with CW only below 10.120. These are WIA [12] recommendations only as ACMA does not restrict Australian amateurs' modes within HF allocations beyond requiring less than 8 kHz occupied bandwidth per channel below 28 MHz.
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The World Administrative Radio Conference 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 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 5 10 18 and 24 MHz bands 3 Non contesting radio amateurs are recommended to use the contest free HF bands 30 17 and 12m during the largest international contests 4 Contents 1 12 meter band plan 1 1 IARU Region 1 5 1 2 IARU Region 2 6 1 2 1 Canada 7 1 2 2 United States 1 1 3 IARU Region 3 8 2 17 meter band plan 2 1 IARU Region 1 2 2 IARU Region 2 2 2 1 Canada 7 2 2 2 United States 1 2 3 IARU Region 3 3 30 meter band plan 3 1 IARU Region 1 3 2 IARU Region 2 3 2 1 Canada 7 3 2 2 United States 3 3 IARU Region 3 3 3 1 Australia 4 Key for band plans 5 See also 6 References 7 External links12 meter band plan EditIARU Region 1 5 Edit License class 24 890 24 915 24 915 24 925 24 925 24 929 24 929 24 931 24 931 24 940 24 940 24 990Effective 1 January 2008 CW Only CW narrow band digital CW narrow band digital unattended stations Beacons CW narrow band digital unattended stations All modesIARU Region 2 6 Edit License class 24 890 24 915 24 915 24 925 24 925 24 929 24 929 24 931 24 931 24 940 24 940 24 990Effective 1 January 2008 CW Only CW narrow band digital CW narrow band digital unattended stations Beacons CW narrow band digital unattended stations All modesCanada 7 Edit 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 License class 24 890 24 920 24 920 24 925 24 925 24 940 24 940 24 975 24 975 24 978 24 978 24 990Basic Advanced CW Only Digital only CW narrow band digital wide band digital Phone only TV only Phone onlyUnited States 1 Edit 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 License class 24 890 24 930 24 930 24 990Extra Advanced General CW narrow band digital CW phoneIARU Region 3 8 Edit License class 24 890 24 920 24 920 24 9295 24 9295 24 9305 24 940 24 990Effective as of 2009 CW Only CW narrow band digital Beacons All modes 2 kHz max BW17 meter band plan EditIARU Region 1 Edit License class 18 068 18 095 18 095 18 105 18 105 18 109 18 109 18 111 18 111 18 120 18 120 18 168Effective 1 January 2008 CW Only CW narrow band digital CW narrow band digital unattended stations Beacons All modes unattended stations All modesIARU Region 2 Edit License class 18 068 18 095 18 095 18 105 18 105 18 109 18 109 18 111 18 111 18 120 18 120 18 168Effective 1 January 2008 CW Only CW narrow band digital CW narrow band digital unattended stations Beacons All modes unattended stations All modesCanada 7 Edit 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 License class 18 068 18 095 18 095 18 100 18 100 18 110 18 110 18 168Basic Advanced CW Only CW narrow band digital wide band digital Digital only Phone onlyUnited States 1 Edit 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 License class 18 068 18 110 18 110 18 168Extra Advanced General CW narrow band digital CW phoneIARU Region 3 Edit License class 18 068 18 095 18 095 18 105 18 105 18 1095 18 1095 18 1105 18 1105 18 168Effective as of 2009 CW Only CW narrow band digital CW narrow band digital wide band digital Beacons All modes30 meter band plan EditIARU Region 1 Edit License class 10 100 10 130 10 130 10 150Effective 1 June 2016 CW Only CW narrow band digitalThroughout most of the world the 30 meter band generally cannot be used for phone voice communications 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 However a part of Region 1 is permitted to use phone at certain times 9 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 IARU Region 2 Edit License class 10 100 10 130 10 130 10 140 10 140 10 150Effective 1 January 2008 CW Only CW narrow band digital All modes except phoneCanada 7 Edit 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 License class 10 100 10 130 10 130 10 140 10 140 10 150Basic Advanced CW Only Digital only CW narrow band digital wide band digitalUnited States Edit License class 10 100 10 150Ext Adv Gen 200 watts CW narrow band digitalThe USA Region 2 limits amateur radio users to 200 watts peak envelope power on this band 10 11 IARU Region 3 Edit License class 10 100 10 140 10 140 10 150Effective 2009 CW Only CW narrow band digitalAustralia Edit Australia VK region 3 has a unique set of privileges on 30 meters which allows voice operation on a section of the band for advanced license holders The digital segment is 10 130 10 150 MHz The current band plan has telephony from 10 120 10 135 MHz with CW only below 10 120 These are WIA 12 recommendations only as ACMA does not restrict Australian amateurs modes within HF allocations beyond requiring less than 8 kHz occupied bandwidth per channel below 28 MHz Key for band plans Edit CW only CW narrow band digital lt 500 Hz CW narrow band digital lt 500 Hz unattended stations CW narrow band digital lt 500 Hz wide band digital Beacons CW phone All modes unattended stations All modes except phone Digital only Phone only TV only All modesSee also EditAmateur radio frequency allocations International Telecommunication Union World Radiocommunication Conference Regional Radiocommunication Conference Radio Regulations Federal Communications Commission Radio Amateurs of Canada OfcomReferences Edit a b c d e U S Amateur Frequency Allocations http www arrl org FandES field regulations allocate html Accessed 9 September 2008 ITU Frequency Allocations http life itu int radioclub rr hfband htm Accessed 9 September 2008 http www iaru r1 org wp content uploads 2019 08 hf r1 bandplan pdf IARU Region 1 HF Band Plan August 2011 edition PDF IARU Region 1 Monitoring System IARU August 2011 p 4 Retrieved 2 September 2013 IARU Region 1 band plan http www iaru r1 org index php option com content amp view article amp id 175 amp Itemid 127 accessed 12 January 2011 IARU Region 2 band plan http www iaru r2 org wp content uploads region 2 mf hf bandplan e pdf accessed 12 January 2011 a b c Radio Amateurs of Canada HF MF band plan Canadian 0 30 MHz Band Plan PDF Retrieved 1 December 2015 accessed 1 December 2015 IARU Region 3 band plan http www iaru r3 org r3bandplan doc accessed 12 January 2011 IARU Region 1 Band Plan http www iaru org Chapter 5 1 pdf Archived 2005 05 14 at the Wayback Machine accessed 5 April 2010 US Amateur Radio Frequency Allocations http www arrl org frequency allocations US Amateur Radio Band chart http www arrl org files file Regulatory Band 20Chart Hambands color pdf effective 5 March 2012 accessed 19 June 2012 Band Plan Update External links EditUS Amateur Radio Bands Retrieved from https en wikipedia org w index php title WARC bands amp oldid 1129346215, wikipedia, wiki, book, books, library,
