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difference between DSC and AIS?
Re antenna performance: You can make sure that the power you send into the
cable actually end out in the air and not just being reflected to the radio. To meassure this use a "SWR meter" that can be bought in any HAM shop for approx 50 dollar (low end but quite OK to meassure a boat antenna). Eksample: http://www.mfjenterprises.com/produc...rodid=MFJ-812B (maybe to cheap, ask for advise in a shop or in a ham newsgroup) Bjarke "luc" wrote in message oups.com... What is the difference between AIS and DSC? They seem very similar, use VHF etc. Also, is it possible to test a VHF antenna for optimal performance? thanks, Luc |