Yes, I understand the units conversion, Charlie. That's not the problem.
Strictly speaking the specification says that the lateral force on the
antenna in a 130 km/h wind is 430 newtons (96.6 lbs). Is 130 km/h also
the maximum wind survival speed? It doesn't explicitly say that, but it
is sort of implied.
73, Mike W4EF.....................
On 5/19/2021 5:07 PM, Charles Morrison wrote:
130kph=80.7mph
for antenna, weather & racecars
On Wed, May 19, 2021 at 7:34 PM Michael Tope <W4EF@dellroy.com
<mailto:W4EF@dellroy.com>> wrote:
One of the radio clubs I belong to is interested in buying an
OptiBeam
OB2-40M two-element 40 meter Moxon Yagi. Optibeam is kind of vague on
wind survival specifications. Their website indicates "Windload at
130
km/h 430 N / 0,54 m² / 5,9 feet²". To me that implies the
antenna is designed to survive 130 km/h winds (80.7 MPH), but it
doesn't
actually say that. The antenna is going to be installed at a Southern
California QTH at a fairly low elevation, so icing is extremely
unlikely. However, the antenna will be installed on a high narrow
ridge
that lend itself to very high uneven (shearing) winds when we get the
occasional winter storm or Santa Ana wind condition.
Anyone out there using one of these antennas? I am curious what you
think of it in terms of performance and reliability?
Thanks and 73,
Mike W4EF.................
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