Brief,Introduction,Marine,Radi technology A Brief Introduction to Marine Radios, Important Channels an
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A VHF Marine Radio is an essential piece ofequipment in coastal waters.Marine radio allows instant communication betweenyour boat and other boats, marinas, bridges, and the United States Coast Guard.Most VHF Marine Radios also have instant access to NOAA weather forecasts, 24hours a day.Using a marineradio may appear to be pretty straightforward, but you have to know some rules,procedures and the most important frequencies to fully utilize this criticalcommunication device.Using MAYDAYIf you are in distress, use the words MAYDAY, MAYDAY, MAYDAY to get theattention of others listening on the channel. "MAYDAY" is to be usedONLY in an emergency in which the boat and/or persons on board are in imminentdanger of sinking or major injury or death. MAYDAY calls are serious business.Issuing a MAYDAY call for something not immediately threatening loss of life,serious injury or loss of property is subject to a $10,000.00 fine.Important ChannelsThe Federal Communications Commission established VHF-FM channel 9 as asupplementary calling channel for noncommercial vessels (recreational boaters)at the request of the Coast Guard. Radio traffic is monitored by all boats withradios on and by the Coast Guard on Channel 16. This is known as the distressfrequency. Channel 13 serves as the navigation and piloting channel. Otherimportant channels include 22A, which is the channel the Coast Guard uses tobroadcast weather warnings, navigational hazards and other vital facts. Stormwarnings and forecasts are also made by NOAA Weather Radio. Digital Selective Calling (DSC)DSC protocol is a globally applied system used to send and receive digitalcalls. DSC uses a unique Maritime Mobile Service Identity (MMSI) number todirect DSC calls directly to your radio, much like a telephone number. When theDSC signal is received, the radio quickly switches over to channel 70 andperforms the corresponding operation. DSC radio will send an automated digital distresssignal that consists of your position and your MMSI number to otherDSC-equipped vessels and rescue agencies within VHF radio range.LicensesA rule change in 1996 allows U.S. recreational boaters operating in domesticwaters to operate marine VHF, EPIRBs and Radar without a license. If your boatwill be traveling internationally or communicating with foreign stations, or ifyou will operate HF single side band or a marine satellite terminal (such asINMARSAT) then a license is required. Currently the Inmarsat Organization isthe sole provider of worldwide maritime mobile satellite communicationsoffering emergency calling capability.
Brief,Introduction,Marine,Radi