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The (DoDI) 6130.03, 2018, section 5, 13f and 14m is the writing which bars persons with "true hermaphroditism" (ovotesticular disorder of sex development), "pseudohermaphroditism" and "pure gonadal dysgenesis" from serving in the United States Armed Forces.
Members of the then Military Affiliate Radio System (MARS) prep an antenna on 10 May 2007 as they respond to a simulated nuclear incident during Operation Vigilant Guard, a joint military and civilian training exercise under way at Camp Atterbury, near Edinburgh, Indiana. Department of Defense. Department of the Army; Department of the Air Force
The 10-meter band was allocated on a worldwide basis by the International Radiotelegraph Conference in Washington, DC, on 4 October 1927. [2] Its frequency allocation was then 28-30 MHz. A 300 kHz segment, from 29.700–30.000 MHz, was removed from the amateur radio allocation in 1947 by the International Radio Conference of Atlantic City.
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).
Shortwave bands are frequency allocations for use within the shortwave radio spectrum (the upper medium frequency [MF] band and all of the high frequency [HF] band). Radio waves in these frequency ranges can be used for very long distance (transcontinental) communication because they can reflect off layers of charged particles in the ionosphere and return to Earth beyond the horizon, a ...
Amateur radio has an allocation starting at 28.000 MHz in the 10-meter band. [19] Below the Citizen's Band, the military has the frequencies from 26.480 to 26.960 MHz. The Civil Air Patrol has 26.620 MHz, though it now uses mostly VHF frequencies. [20]
On October 10, the Third National Radio Conference made three shortwave bands available to U.S. amateurs [8] at 80 meters (3.75 MHz), 40 meters (7 MHz) and 20 meters (14 MHz). These were allocated worldwide, while the 10-meter band (28 MHz) was created by the Washington International Radiotelegraph Conference [ 9 ] on 25 November 1927.
Several countries in ITU Region 1 have access to frequencies in the 70 MHz region, called the 4-meter band. The band shares many propagation characteristics with 6 meters. The preferred location for beacons is 70.000–70.090 MHz; [5] however, in countries where this segment is not allocated to Amateur Radio, beacons may operate elsewhere in ...