Originally Posted by Polwart
is that measured from the base of the antanae or the top? makes a big difference on a small rib/sib especially with no a-frame
The theory is, 10ft above sea level.
So in realty it is just a fairly accurate guidline.
Yachts for instance.
Will enjoy better ship to ship communication with their 'spikes' mounted on top of a tall mast.
30ft (above sea level)for those chaps would give them about 8 miles each.
Therefore a 16 mile 'range'
Then again weather conditions, the sea bobbing us up and down etc will affect reception etc.
Basically, the higher the better really though.
Obviously HM Coastgaurd has antennas dotted about the place.
Which is why sometimes you may hear the CG transmitting when you are 20 miles from Him
But you wont hear the vessel responding.
I like to stick me radio on Ch 84 Holyheads CG's Ch for 'routine traffic' normally and stick the 'dual watch' facility on.
So 16, cos everything starts there, or should!
Plus on 84 I can hear the CG and sometimes the vessel responding.
Just kinda makes me feel safe, to know who is about and whats going on.
Plus I,m a nosey git