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An emergency position-indicating radiobeacon (EPIRB) is a type of emergency locator beacon for commercial and recreational boats, a portable, battery-powered radio transmitter used in emergencies to locate boaters in distress and in need of immediate rescue. In the event of an emergency, such as a ship sinking or medical emergency onboard, the ...
An amateur radio propagation beacon is a radio beacon, whose purpose is the investigation of the propagation of radio signals. Most radio propagation beacons use amateur radio frequencies. They can be found on LF, MF, HF, VHF, UHF, and microwave frequencies. Microwave beacons are also used as signal sources to test and calibrate antennas and ...
10-meter band. The 10-meter band is a portion of the shortwave radio spectrum internationally allocated to amateur radio and amateur satellite use on a primary basis. The band consists of frequencies stretching from 28.000 to 29.700 MHz. [1]
Ku-band satellite 123.0°W: Galaxy 18: LS-1300: United States Intelsat: Television and radio broadcasting North America: 21 May 2008, [[Zenit Hybrid C/K u-band satellite 2008-11-19 121.0°W: Galaxy-23: FS-1300: United States Intelsat: Direct Broadcasting North America: 7 August 2003: Hybrid C/K u /K a-band satellite; C band payload referred to ...
In navigation, a radio beacon or radiobeacon is a kind of beacon, a device that marks a fixed location and allows direction-finding equipment to find relative bearing. But instead of employing visible light, radio beacons transmit electromagnetic radiation in the radio wave band. They are used for direction-finding systems on ships, aircraft ...
The International Beacon Project (IBP) is a worldwide network of radio propagation beacons. It consists of 18 continuous wave (CW) beacons operating on five designated frequencies in the high frequency band. [1][2] The IBP beacons provide a means of assessing the prevailing ionospheric signal propagation characteristics to both amateur and ...
Argos is a global satellite -based system that collects, processes, and disseminates (spreads, distributes) environmental data from fixed and mobile platforms around the world. [ 1 ] The worldwide tracking and environmental monitoring system is the results from Franco-American cooperation. In addition to satellite data collection, the main ...
The Wideband Global SATCOM system (WGS) is a high capacity United States Space Force satellite communications system planned for use in partnership by the United States Department of Defense (DoD), Canadian Department of National Defence (DND) and the Australian Department of Defence. [1] The system is composed of the Space Segment satellites ...