This is probably the culprit. I have had elements
fall off my Yagis before I did learn how to do
tapering right, when tapering is right no ropes
will be needed inside elements.
In the Titanex case you have 8.7 m tubing of the
same diameter 18 mm flopping around in the wind,
to me this is a construction that WILL break.
I would: Splice the thing together and put another
set of guys on it at maybe the 22 - 23 m level.
If you like to do some more work tapering down to
12 mm would be a good idea, maybe start at the 22 m
level and work the 18 mm tubing down to 12 mm.
However another set of guys on it will most likely
solve the case, it will change the mechanical resonance
of the top section compleatly etc etc.
73 good luck / Jim SM2EKM
----------------------------------------------------------
W0UN -- John Brosnahan wrote:
>
>
> This is just my THEORY. But it is the only one I could come
> up with under the circumstances of four failures on one antenna
> and no failures on the second, identical antenna.
>
> I think your antenna suffered a similar failure due to the aeolian
> vibrations that seem to be the worst in steady, but relatively low
> velocity winds. Your site may be the worst case for this sort
> of problem because of the constant winds. I believe that just
> getting a replacement section will only buy you another 12 days
> and that a better solution by the manufacturer is needed.
>
> 73--John W0UN
>
_______________________________________________
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