[TowerTalk] Strengthening Insulated Push-up Pole Base

[Colburn]

I am thinking of putting up one or two 60' push-up poles isolated
from ground as part of an experimental 40/60/80/160M antenna system. 
The bottom section of the push-up pole is 3".

If I set a 3" ID section of thick-wall PVC inside an 8" section
and set them in concrete would y'all recommend concrete, sand,
or ??? in between the sections of PVC?

I am wondering how the PVC may react to different substances,
what would provide the best strength, if I want flexiblity
between the sections, and what might enhance the insulation
value of the PVC.

Thanks! & 73, doc kd4e

-- 
"Wars and rumors of wars, disasters, and social decay,
yet undaunted for love and peace we pray."  dmc
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