[TowerTalk] PVC and RF

[2]

>
>I once bought a HiTower used.  One of the insulators was replaced with
>white PVC.  It didn't seem to arc over at full power on 80.
>Apparently, the factory supplied one did at some time!
>
>However, I didn't use it in a contest environment so perhaps the white
>PVC would have failed too.
>
//   Apparently, there are different types of PVC.  Some melt in a 
microwave oven.  Some don't.  
However, ABS is a plastic that consistantly has a low D-factor, so it is 
ok with RF.  

cheers, Brian

>
>n4kg@juno.com wrote:
>> 
>> Some time ago, W4ZWE made an insulated feed
>> 40M rotary dipole using PVC insulators. If I remember
>> correctly, one type of PVC failed under application of RF
>> while another did not.  I'm thinking the white PVC failed
>> and the black held up but it could be backwards.  Anybody
>> else experience this phenomenon?
>> 
>> Tom  N4KG
>> 
>> 
>> 
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>
>List Sponsored by AN Wireless:  AN Wireless handles Rohn tower systems,
>Trylon Titan towers, coax, hardline and more. Also check out our self
>supporting towers up to 96 feet for under $1500!!  http://www.anwireless.com
>
>-----
>FAQ on WWW:               http://www.contesting.com/FAQ/towertalk
>Submissions:              towertalk@contesting.com
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>


-  R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.  
end


List Sponsored by AN Wireless:  AN Wireless handles Rohn tower systems,
Trylon Titan towers, coax, hardline and more. Also check out our self
supporting towers up to 96 feet for under $1500!!  http://www.anwireless.com

-----
FAQ on WWW:               http://www.contesting.com/FAQ/towertalk
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