[TowerTalk] Insulating tower from ground or ground it and use Slant/Shunt Feed?

[Dave Fuller]

I just put up 60 feet or Rohn 25 with the solid fiberglass rod 
insulators and it works out great.  I guyed it with Phillystran at 50 
feet.   I put a spark gap at the base with a gas tube across it to 
ground for lightning protection.  I'm adding radials now.  It was a 
pretty easy install.   If you live where it freezes though (like I do) 
you need to drill weep holes above the solid fiberglass rods to let any 
water out of the tower legs.

-Dave WD7Z

RLVZ at aol.com wrote:

>Hi-
> 
>I have an aluminum tower that I hope to do the same  thing with... use it for 
>a 1/4 wave 80-meter vertical.  (and load it  for 160-meters).  My aluminum 
>tower is actually 32' in height and I have  another 35' of telescoping aluminum 
>that I plan to drop in the towers top  colar.  Then tune adjust the  
>telecoping alumumin for minimum  SWR.
> 
>I've been thinking of the best way to load it and/or insulate  it.  A few 
>options: 
> 
>1) Insulate the base and base feed it.  Finding base  insulator material is a 
>challenge.
> 
>2) Ground the tower and "shunt feed" it.  This would eliminate  the need to 
>insulate the base but require additional parts to get  the proper match.
> 
>3) Ground the tower and use a "slant feed".  This would  eliminate the need 
>to insulate the base but require additional parts to get the  proper match.  
> 
>Any recommendations!
> 
>Thanks!
> 
>K9OM
> 
> 
>DOSE  ANY ONE OUT THERE HAVE PLANS OR WORKING MODEL TO INSULATE A TOWER FROM  
>GROUND?I WANT TO USE A HEIGHTS ALUMINUM TOWER FOR A 80 MTR.VERTICAL.  
>
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