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The MARS programs also include active duty, reserve, and National Guard units; and Navy, Marine Corps units. [1] MARS has a long history of providing worldwide auxiliary emergency communications during times of need. The combined two-service MARS programs (Army, and Air Force), volunteer force of over 3,000 dedicated and skilled amateur radio ...
Since MURS uses standard frequencies, most devices that use MURS are compatible with each other. Most analog two-way radios utilize a technology called CTCSS or DCS that helps block out unwanted transmissions. To make MURS two-way radios work together, they must have matching CTCSS or DCS tones. This can usually be done via basic programming ...
Mars is the fourth planet ... of sound there is approximately 240 m/s for frequencies below 240 ... by the U.S. Aeronautical Chart and Information ...
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).
The primary HFGCS voice frequencies are 4724.0 kHz, 8992.0 kHz, 11175.0 kHz, and 15016.0 kHz. In addition to the HFGCS, U.S. aircraft frequently use Military Auxiliary Radio System (MARS) HF stations (13927.0 kHz) and Canadian Forces HF stations (11232.0 kHz) to relay messages. Various other discrete frequencies are available, and used, as part ...
US frequency allocations chart, 2016. Frequency allocation (or spectrum allocation) is the part of spectrum management dealing with the designation and regulation of the electromagnetic spectrum into frequency bands, normally done by governments in most countries. [1]
Frequency allocations in MHz Band designation Deep space bands (for space stations more than 2,000,000 km from Earth) Near space bands (for space stations less than 2,000,000 km from Earth) Up-link (Earth to space) Down-link (Space to Earth) Up-link (Earth to space) Down-link (Space to Earth) S band: 2110–2120: 2290–2300: 2025–2110: 2200 ...
Date/Time Thumbnail Dimensions User Comment; current: 20:22, 4 February 2023: 512 × 640 (12 KB): Mckoss: Correction to GMRS power level 462 MHz interstitial (2 to 5 watts)