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Maidenhead locators are also commonly referred to as QTH locators, grid locators or grid squares, although the "squares" are distorted on any non-equirectangular cartographic projection. Use of the terms QTH locator and QRA locator was initially discouraged, as it caused confusion with the older QRA locator system.
The standard message is <callsign> + <4 character locator> + <dBm transmit power>; for example “K1ABC FN20 37” is a signal from station K1ABC in Maidenhead grid cell “FN20”, sending 37 dBm, or about 5.0 W (legal limit for 630 m). Messages with a compound callsign and/or 6 digit locator use a two-transmission sequence.
This is the page most often used, since it is referenced directly by links from each of the SOTAWatch Summit pages. [3] In addition to being able to view various SOTA Associations, Regions and individual summits, the page offers the exporting or downloading of such data in GPX (for import into a GPS device) or KML (for importing into Google Earth) formats.
The information exchanged could include an R-S-T system signal report, a name, the national region, i.e. a province or US state, in which the station is located, the geographic zone [3] in which the station is located, the Maidenhead grid locator in which the station is located, the age of the operator, or an incrementing serial number.
The American Radio Relay League (ARRL) is the largest membership association of amateur radio enthusiasts in the United States. ARRL is a non-profit organization and was co-founded on April 6, 1914, by Hiram Percy Maxim and Clarence D. Tuska of Hartford, Connecticut .
The amateur radio service is unusual in the fact that it is regulated by international treaty. Worldwide amateur allocations are determined by the International Telecommunication Union [3] (ITU), which allocates global radio spectrum and satellite orbits, [4] develops the technical standards that ensure networks and technologies seamlessly interconnect and strive to improve access to ICTs to ...
The ARRL has a "detailed band plan" for US hams showing allocations within each band. RAC has a "chart showing the frequencies available to amateurs in Canada" . 21 June 2017 . Table of amateur MF and HF allocations in the United States and Canada
Grid MORAs provide an obstacle clearance altitude within a latitude and longitude grid block, usually of one degree by one degree. [1] MORAs were created by Jeppesen and used on their airways charts. Some countries specify Minimum Enroute Altitudes (MEAs), minimum obstruction clearance altitudes (MOCAs), and Off Route Obstacle Clearance ...