[TowerTalk] Grey PVC Loading Coil

[Jim Lux]

At 01:45 PM 12/5/2006, WA3GIN @ Arlington County, VA wrote:
>HI,
>
>I think the voltage concern is going to be at the top of the antenna but
>I could be wrong.
>
>The electrical (gray) PVC holds up well outside in UV.  But one can
>always paint the plastic black which will protect it from the UV.  At HF
>the plastic is invisible for the most part.

Some black paint uses carbon black as the pigment, and is unsuitable 
for this kind of application (especially if there is HV around).

Best to check... spray some on paper and check it with an ohmmeter 
after it dries.