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 (10.1–10.15 MHz), 17 meters (18.068–18.168 MHz), and 12 meters (24.89–24.99 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.[7]
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.
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.[10] The band segment 10.12 to 10.14 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 10.13-10.15 MHz. The current band plan has telephony from 10.12–10.135 MHz, with CW only below 10.12. These are WIA [13] 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.
Japanedit
License class
10.1-10.12
10.12-10.15
1st and 2nd
CW Only
narrow-band All modes
Note: The occupied bandwidth shall be less than 2kHz.
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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 1 10 15 MHz 17 meters 18 068 18 168 MHz and 12 meters 24 89 24 99 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 1 4 Japan 9 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 2 4 Japan 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 3 3 2 Japan 4 Key for band plans 5 See also 6 References 7 External links12 meter band plan editIARU Region 1 5 edit License class 24 89 24 915 24 915 24 925 24 925 24 929 24 929 24 931 24 931 24 94 24 94 24 99Effective 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 89 24 915 24 915 24 925 24 925 24 929 24 929 24 931 24 931 24 94 24 94 24 99Effective 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 7 License class 24 89 24 92 24 920 24 925 24 925 24 94 24 94 24 975 24 975 24 978 24 978 24 99Basic Advanced CW Only Digital only CW narrow band digital wide band digital Phone only TV only Phone onlyUnited States 1 edit License class 24 89 24 93 24 93 24 99Extra Advanced General CW narrow band digital CW phone imageIARU Region 3 8 edit License class 24 89 24 92 24 92 24 9295 24 9295 24 9305 24 94 24 99Effective as of 2009 CW Only CW narrow band digital Beacons All modes 2 kHz max BWJapan 9 edit License class 24 89 24 900 24 900 24 930 24 930 24 990ALL Class CW Only CW narrow band digital NB All modes17 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 12 18 12 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 1 18 1 18 11 18 11 18 168Basic Advanced CW Only CW narrow band digital wide band digital Digital only Phone onlyUnited States 1 edit License class 18 068 18 11 18 11 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 modes Japan edit License class 18 068 18 080 18 080 18 110 18 110 18 168ALL class CW Only CW narrow band digital NB All modes30 meter band plan editIARU Region 1 edit License class 10 1 10 13 10 13 10 15Effective 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 10 The band segment 10 12 to 10 14 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 1 10 13 10 13 10 14 10 14 10 15Effective 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 1 10 13 10 13 10 14 10 14 10 15Basic Advanced CW Only Digital only CW narrow band digital wide band digitalUnited States edit License class 10 1 10 15Extra Advanced General 200 watts CW narrow band digitalThe USA limits amateur radio users to 200 watts peak envelope power on this band 11 12 IARU Region 3 edit License class 10 1 10 14 10 14 10 15Effective 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 13 10 15 MHz The current band plan has telephony from 10 12 10 135 MHz with CW only below 10 12 These are WIA 13 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 Japan edit License class 10 1 10 12 10 12 10 151st and 2nd CW Only narrow band All modesNote The occupied bandwidth shall be less than 2kHz 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 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 DK4VW ed 2016 06 01 IARU Region 1 HF band plan 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 d Canadian 0 30 MHz Band Plan PDF wp rac ca MF HF band plan Radio Amateurs of Canada 1 December 2015 Retrieved 1 December 2015 IARU Region 3 band plan http www iaru r3 org r3bandplan doc accessed 12 January 2011 Japan band plan https www jarl org English 6 Band Plan JARL 20Band 20Plan20230925 E pdf accessed 25 September 2023 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 1195927400, wikipedia, wiki, book, books, library,
