[TowerTalk] Adding Expanding Foam inside boom

jimlux jimlux at earthlink.net
Thu Apr 26 17:52:08 EDT 2018

On 4/26/18 1:31 PM, Kimberly Elmore wrote:
> In a similar vein, I'm helpingto rect an antenna in a relatively 
> inaccessible location and want to minimize element vibration. I have no 
> intention of tryingto fill each element with foam, but I've read that 
> securing a rope inside the element will prevent resonant vibration from 
> occurring. If this is true, will something like "parachute cord" do the 
> trick? It won't be exposed to eather, so UV deteriorartion isn't an issue.

An even better way is to wrap the rope in a spiral on the outside.  That 
kills the wind induced vibration very effectively. (you see this on car 

doesn't even have to be the full length.


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