AM (600-1600 KHz) is a ground wave. It doesn't skip.

It travels further at night because the ionic concentrations in the Appleton
layer decrease from lack of sunlight and the solar wind.


"Horvath" wrote in message
...
On Wed, 03 Sep 2003 16:33:14 GMT, "Wally" wrote this
crap:

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?

You must be joking. The sea always acts as a ground plane. But a
skip is always on AM.

(Wally's answer: "Yes you are correct. I was just testing.")




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