| 词条 | WARC bands | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 释义 |
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 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:
12 metre band planIARU Region 1[4]
IARU Region 2[5]
IARU Region 3[6]
Canada[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 but it does not have the force of law and should only be considered a suggestion or guideline.
United States[1]
17 metre band planIARU Region 1
IARU Region 2
Canada[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 but it does not have the force of law and should only be considered a suggestion or guideline.
United States[1]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.
IARU Region 3
30 metre band planIARU Region 1
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.[8] 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
IARU Region 3
AustraliaAustralia (Region 3) allows voice operation on a section of 30 meters. Amateurs are advised to operate SSB above 10.125 MHz whenever possible. Canada[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 but it does not have the force of law and should only be considered a suggestion or guideline.
United States
The USA (Region 2) limits amateur radio users to 200 watts peak envelope power on this band.[9][10] Key for band plans
See also
References1. ^1 2 3 U.S. Amateur Frequency Allocations http://www.arrl.org/FandES/field/regulations/allocate.html Accessed 9 September 2008 {{AmateurRadioBands-MFHF}}2. ^ITU Frequency Allocations http://life.itu.int/radioclub/rr/hfband.htm Accessed 9 September 2008 3. ^{{cite web|title=IARU Region 1 HF Band Plan (August 2011 edition)|url=http://www.iarums-r1.org/iarums/hfplanr1.pdf|work=IARU Region 1 Monitoring System|publisher=IARU|accessdate=2 September 2013|page=4|date=August 2011}} 4. ^IARU Region 1 band plan http://www.iaru-r1.org/index.php?option=com_content&view=article&id=175&Itemid=127 accessed 12 January 2011 5. ^IARU Region 2 band plan http://www.iaru-r2.org/wp-content/uploads/region-2-mf-hf-bandplan-e.pdf accessed 12 January 2011 6. ^IARU Region 3 band plan http://www.iaru-r3.org/r3bandplan.doc accessed 12 January 2011 7. ^1 2 Radio Amateurs of Canada HF/MF band plan {{cite web|url=http://wp.rac.ca/wp-content/uploads/files/pdf/RAC%20Bandplan%20December%201%202015.pdf |title=Canadian 0-30 MHz Band Plan |accessdate=1 December 2015 }} accessed 1 December 2015 8. ^IARU Region 1 Band Plan http://www.iaru.org/Chapter-5.1.pdf {{Webarchive|url=https://web.archive.org/web/20050514182423/http://www.iaru.org/Chapter-5.1.pdf |date=2005-05-14 }} accessed 5 April 2010 9. ^US Amateur Radio Frequency Allocations http://www.arrl.org/frequency-allocations 10. ^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 External links
1 : Amateur radio bands |
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