emergency frequency station
51Marine VHF radio — A standard handheld maritime VHF, mandatory on larger vessels under the GMDSS rules …
52Maritime mobile amateur radio — An emergency portable boat radio transceiver, Museal ship S/S Sołdek in Gdańsk, Poland Most countries amateur radio licences allow licensed operators to install and use radio transmission equipment while at sea. Such operation is known as… …
53Mayday — For other uses, see Mayday (disambiguation). A Mayday call might result in the activation of a lifeboat such as this Severn class lifeboat Mayday is an emergency procedure word used internationally as a distress signal in voice procedure radio… …
54Pirate radio in North America — CubaGovernment propaganda stationsSince the 1960s and the advent of the revolutionary government of Fidel Castro, the United States has engaged in a number of overt and covert political broadcasting operations intended to undermine the government …
55DCF77 — Coordinates: 50°0′56″N 9°00′39″E / 50.01556°N 9.01083°E / 50.01556; 9.01083 …
56L-Tronics — is a company based in Santa Barbara, California that specializes in the design and manufacture of direction finding (DF) equipment for search and rescue applications, used to locate signals originating from distress radiobeacons. These include… …
57Continuous Tone-Coded Squelch System — In telecommunications, Continuous Tone Coded Squelch System or CTCSS is a circuit that is used to reduce the annoyance of listening to other users on a shared two way radio communications channel. It is sometimes called tone squelch. Where more… …
58Multi-Use Radio Service — In the United States, the Multi Use Radio Service (MURS) is an unlicensed two way radio service similar to Citizens Band (CB). Established by the U.S. Federal Communications Commission in the fall of 2000, MURS created a radio service allowing… …
59Ulukhaktok/Holman Airport — Infobox Airport name = Ulukhakot/Holman Airport IATA = YHI ICAO = CYHI type = Public owner = operator = Government of Northwest Territories city served = location = Ulukhaktok, Northwest Territories elevation f = 117 elevation m = 36 coordinates …
60Korean Air Lines Flight 007 — Flight 007 redirects here. For other uses, see Flight 7 (disambiguation). Korean Air Lines Flight 007 Artist s rendition of HL7442, the KAL 747 lost during Flight 007 Occurrence summary …
