[TowerTalk] Birds and PVC on Antennas

[Tom Osborne]

 I've used it for all sorts of antenna applications and not had a
> problem, but I've never stressed it more than using it for end
> insulators on a dipole while running 100W.  I wouldn't use it as a
> substrate for microwave circuitry, but plenty of hams use it for HF
> all the time, even radomes for homebrew VHF antennas.

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Doesn't the Screwdriver  mobile antenna have PVC for the base? Maybe that 
part don't radiate or something.
Tom W7WHY