A lot of people also believe that wire mesh dishes will
"fix" their wind loading problems. They don't understand
flow through porous media. When the wind speed on a wire mesh
antenna that will work at 2304 gets above 20 mph (say), you
begin to get nonlinear response to the flow or turbulence or
cavitations and the wind resistance quickly becomes almost the
same as a solid dish!!
Bob
N4HY
-----Original Message-----
From: vhfcontesting-bounces@contesting.com
[mailto:vhfcontesting-bounces@contesting.com]On Behalf Of Robert McGwier
Sent: Friday, August 01, 2003 18:30
To: vhfcontesting@contesting.com
Subject: RE: [VHFcontesting] Rover antenna question
I consider K5UHF to be typical of the absolute top of the
heap rovers in the U.S. Go to qrz.com and put in K5UHF.
Ken has told me the loop yagis and the others he uses survive
the 70+ mph breezes quite well! The really high surface
area antennas such as dishes, he folds down for the high
speed portions. Ken did 35 or 39 grids in a recent contest.
Bob
N4HY
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