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SWR is standing wave ratio. basically how much is flying out of the Arial compared to whats being pushed in. ideally it should be 1 watt in 1 watt out etc.
marine radios are vertically polarized and...

OK, here goes. any "whip" antenna directs signal through 360 degrees so you transmit in all directions when you do. so obviously more power = more range. but in no way expect 5X more range from 5x...

i'm not sure if motorola still make marine band. GME was pretty good though. Uniden was ok in performance but the fittings werent stainless and looked a mess after awhile

i was working at a company that among other things repaired 2 way radios. the amount of people who would come in wanting cheap nasty gear repaired was unreal. i got so pissed off at one guy after i...

get one mounted and correctly wired. get the appropriate aerial for the boat, some antenna are designed to be mounted on a metal groundplane which isnt much use in a fi-glass boat. higher you get the...