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.
I'd get more votes to see if white or black wins.
73 de Brian/K3KO
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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-----
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