The 20-meter or 14-MHzamateur radio band is a portion of the shortwave radio spectrum, comprising frequencies stretching from 14.000 MHz to 14.350 MHz.[1] The 20-meter band is widely considered among the best for long-distance communication (DXing), and is one of the most popular—and crowded—during contests.[2] Several factors contribute to this, including the band's large size, the relatively small size of antennas tuned to it (especially as compared to antennas for the 40-meter band or the 80-meter band) and its good potential for daytime DX operation even in unfavorable propagation conditions.[3]
This section needs expansion. You can help by adding to it. (January 2011)
The Third National Radio Conference was responsible for opening up the 20-meter band to amateur radio operators in the US[4] on October 10, 1924. The band was allocated on a worldwide basis by the International Radiotelegraph Conference[5] in Washington, D.C., on October 4, 1927. Its frequency allocation was then 14–14.4 MHz. The allocation was reduced to 14–14.35 MHz by the International Radio Conference of Atlantic City, New Jersey 1947.[6]
Canada[8] 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.
^"Frequency or wave band allocations". Recommendations for Regulation of Radio Adopted by the Third National Radio Conference. Govt. Print. Off. October 6–10, 1924. p. 15.
^(PDF). INTERNATIONAL RADIOTELEGRAPH CONVENTION OF WASHINGTON, 1927. 25 November 1927. Archived from the original (PDF) on 8 March 2014. Retrieved 6 July 2014.
^(PDF). Archived from the original (PDF) on 15 July 2014. Retrieved 6 July 2014.
^ abc. www.iaru.org. International Amateur Radio Union (IARU). Archived from the original on 30 December 2013. Retrieved 6 January 2014.
^(PDF). rac.ca. Archived from the original (PDF) on 27 November 2010. Retrieved 8 July 2008.
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meter, band, meter, amateur, radio, band, portion, shortwave, radio, spectrum, comprising, frequencies, stretching, from, widely, considered, among, best, long, distance, communication, dxing, most, popular, crowded, during, contests, several, factors, contrib. The 20 meter or 14 MHz amateur radio band is a portion of the shortwave radio spectrum comprising frequencies stretching from 14 000 MHz to 14 350 MHz 1 The 20 meter band is widely considered among the best for long distance communication DXing and is one of the most popular and crowded during contests 2 Several factors contribute to this including the band s large size the relatively small size of antennas tuned to it especially as compared to antennas for the 40 meter band or the 80 meter band and its good potential for daytime DX operation even in unfavorable propagation conditions 3 A HB9XBG vertical Antenna for the 20m Band on Simplon Pass with view to Mount Galehorn Contents 1 History 2 Band plans 2 1 IARU Region 1 2 2 IARU Region 2 2 3 IARU Region 3 2 4 United States 2 5 Canada 3 ReferencesHistory EditThis section needs expansion You can help by adding to it January 2011 The Third National Radio Conference was responsible for opening up the 20 meter band to amateur radio operators in the US 4 on October 10 1924 The band was allocated on a worldwide basis by the International Radiotelegraph Conference 5 in Washington D C on October 4 1927 Its frequency allocation was then 14 14 4 MHz The allocation was reduced to 14 14 35 MHz by the International Radio Conference of Atlantic City New Jersey 1947 6 Band plans EditIARU Region 1 Edit Europe Africa Middle East and Northern Asia 7 20 meters 14000 14070 14070 14099 14099 14101 14101 14350IARU Region 1IARU Region 2 Edit The Americas 7 20 meters 14000 14070 14070 14099 14099 14101 14101 14350IARU Region 2IARU Region 3 Edit Asia Pacific 7 20 meters 14000 14070 14070 14099 14099 14101 14101 14112 14112 14350IARU Region 3United States Edit Effective 12 01 a m EST February 23 2007 20 meters 14000 14350 United States 14000 14025 14025 14150 14150 14175 14175 14225 14225 14350GeneralAdvancedExtraCanada Edit Canada 8 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 License class 14 000 14 070 14 070 14 095 14 095 14 0995 14 0995 14 1005 14 1005 14 112 14 112 14 350Basic AdvancedKey CW only CW narrow band digital lt 500 Hz CW narrow band digital lt 500 Hz wide band digital CW RTTY and data US lt 1 kHz Bandwidth Beacons CW phone CW narrow band digital lt 500 Hz phone CW phone and imageReferences Edit Frequency Allocations Arrl org 5 March 2012 Archived from the original on 14 March 2010 Retrieved 29 October 2012 Ford Steve ed Picking a band The ARRL Operating Manual 8th ed Newington CT American Radio Relay League p 1 15 Propagation of RF Signals The ARRL Handbook For Radio Communications 82nd ed Newington CT American Radio Relay League 2005 p 20 4 ISBN 0 87259 928 0 Frequency or wave band allocations Recommendations for Regulation of Radio Adopted by the Third National Radio Conference Govt Print Off October 6 10 1924 p 15 INTERNATIONAL RADIOTELEGRAPH CONVENTION AND GENERAL AND SUPPLEMENTARY REGULATIONS PDF INTERNATIONAL RADIOTELEGRAPH CONVENTION OF WASHINGTON 1927 25 November 1927 Archived from the original PDF on 8 March 2014 Retrieved 6 July 2014 RADIO REGULATIONS ANNEXED TO THE INTERNATIONAL TELECOMMUNICATION CONVENTION ATLANTIC CITY 1947 PDF Archived from the original PDF on 15 July 2014 Retrieved 6 July 2014 a b c IARU Regions www iaru org International Amateur Radio Union IARU Archived from the original on 30 December 2013 Retrieved 6 January 2014 RAC MF HF Band Plan PDF rac ca Archived from the original PDF on 27 November 2010 Retrieved 8 July 2008 This article related to amateur radio is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title 20 meter band amp oldid 1168174078, wikipedia, wiki, book, books, library,
