[TowerTalk] durability

[michael watts]

Sure seems right to me.  What was F12's complaint
about putting rope in their antennas?

Mike
--- Tom Rauch <w8ji@contesting.com> wrote:
> > mph. Most urban areas are built in low wind
> locations. The problem
> > arises when the average wind is high with day
> after day of winds over
> > 30 mph. We have had people make statements that
> Force 12 elements
> 
> My location is middle western Georgia, although my
> antennas are 
> in a clear area and above the tree lines. It is the
> mild breezes that 
> set my antennas elements into vibration.
> 
> > don't vibrate and therefore don't need rope in
> them or will not fail
> > from wind induced vibration. I know this is false
> because if you take
> > an element and swing it around you will hear and
> feel the vibration
> > from the element. 
> 
> I know it is false because on any day when the
> breeze is over 
> maybe ten MPH, I can hear the antenna elements
> vibrating. Since 
> the antennas are 30 feet or more apart, there is no
> mistaking (when 
> on the tower) which antennas vibrate.
> 
> It seems silly to have a disagreement about this,
> because adding 
> rope INSIDE the element can't possibly change the
> ice loading or 
> wind loading of the element. It might not do any
> good, but it 
> certainly can't do any harm to the antenna.
> 
> From here on out, I'll never install another antenna
> without rope 
> dampers and end caps. I've learned my lesson.
> 
> 
> 73, Tom W8JI
> W8JI@contesting.com 
> --
> List Sponsor:  ChampionRadio.com - Trylon
> self-supporting towers, safety
> equipment, rigging gear, LOOS tension guages & more!
>  www.championradio.com
> --
> -----
> FAQ on WWW:              
> http://www.contesting.com/FAQ/towertalk
> Submissions:              towertalk@contesting.com
> Administrative requests: 
> towertalk-REQUEST@contesting.com
> Problems:                
> owner-towertalk@contesting.com
> 


__________________________________________________
Do You Yahoo!?
Get email at your own domain with Yahoo! Mail. 
http://personal.mail.yahoo.com/?.refer=text