[TowerTalk] Rohn 25 for 80m vertical?

[brahmangou at aol.com]

Hello all,
 
I'm wanting to put up a full sized 80 meter vertical made from Rohn 25 in  
my pasture. I have a teflon insulated tilt base for the tower to isolate it 
from  ground and phillystrand to guy it with. When I ran it through eznec it 
shows the  antenna needs to be only about 38' tall. I know I must be making 
a mistake  somewhere. I can find plenty of articles about shunt feeding a 
grounded tower,  but nothing about making a vertical from a tower. Has anyone 
on the list done  this before? Possibly there is a reason that this will 
not work, or someone  would have already written about it. Any help?
 
Marty Haley AB5GU