Quote:
...I thought it was all line of site - the higher off the water you transmit, the father your signal will reach beyond the curve of the earth. Seems I remember a formula that said for very foot off the water your line of site increased by "x" amount - whatever "x" is. My brain fails me at times...
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From 6' above the surface of the water, the horizon is 12 miles away, it says here in my 48th edition of Chapman's Piloting. That's 2 miles per foot. So since line of sight = maximum range, then from an antenna 8' MSL (
above mean sea level) to another antenna that is also 8' MSL maximum range 32 miles. That is, of course, degraded by bobbing up and down on the waves. Therefore, according to Chapman's,
effective range is generally no more than 70% of maximum.
But wait...Digital VHF radio's are supposed to have 15% greater effective range than analog, (whatever that means). That would make the effective range for a digital VHF 80.5% of maximum range.
Okay, now
my brain fails and my head hurts.
__________________
Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury