Judging by results from my boat, 25 watts into a gain antenna should get us out someplace. Thanks! 73 DE N3HGB Joe Della Barba Don't even need 25 Watts..K3ARS-2 iGate is less 7 miles away in Chestertown. I think I use about 5watts to hit the digi in Rock Hall from my boat at Lankford Bay Marina, Lankford Creek across from Corsica River Clay AA3JY