"Stefan Wolfe" wrote in message
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"Jerry Martes" wrote in message
news:iLuyh.5336$384.156@trnddc05...

"Stefan Wolfe" wrote in message
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wrote in message
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hello
Jeff
i am very thank full to your help, i have got Rx height 101.2

Regards
naqvi

Please show your work.


Hi Stephan

Your posts seem to inply that the receive antenna will "see" the 20
meter high transmitting antenna when the receiver antenna is in the
shadow of the 80 meter hill. It seems that the receiver needs to be out
of the shadow of the hill unless you are able to estimate refraction from
the hill.

But, your aparent confidance in the statement "0 feet" makes me wonder
if I have this problem wrongly analyzed. I have so much confidance in
Richard Fry's data that I had accepted his estimation of 270 meters to be
as close as you can estimate.

Do I misunderstand your post about what minimum height is needed?

Jerry
Hi Jerry,

how many shadows have you seen that are 20Km long?


Hi Stephan

Tell me where I have misunderstood the problem. I assumed the
transmitting antenna was Lower than the top of the hill. But, you seem to
imply that the transmitter can be seen even when the hill is blocking the
"view" to it.

I have actually never measured a shadow longer that a few feet, but I
assumed they continued to exist to infinity when an object blocks them from
view.

Jerry