That 500 foot antenna only give LOS of 27 miles. You need ducting to get that to 90
miles. I assume that the CG is broadcasting at very high power, so that it will carry in
conditions too marginal for only 25 Watts.

Simple Simon wrote:
As usual . . .

Bobsprit lied. His antenna simply isn't high enough to get out forty
miles.

I can receive Coast Guard transmissions from Group Key West - 90
miles,
Group Miami - 80 miles. This huge range is because their antennas are
about
five hundred feet high. It wouldn't surprise me either if their
transmission power
is higher than 25 watts.

S.Simon

"Wally" wrote in message
...
Bobsprit claims to have made a VHF transmission of over 40nm. Given
that his antenna height is about 50 feet, that would require, for a
line of sight transmission, that the other antenna be about 800 -
eight hundred - feet above the water.

I believe that 40 miles is too close for skip, so could his
transmission have a 'terrain following' effect in the sense that the
sea might act as a ground plane?

Would anyone care to comment on the veracity of Bobsprit's claim?


--
Wally
www.makearatherlonglinkthattakesyounowhere.com
Things are always clearer in the cold, post-upload light.