[Towertalk] A couple of vertical questions

[K7LXC@aol.com]

Howdy, TowerTalkians --

    I'd like your feedback on a couple of questions. The antenna is a Hy-Gain 
DX-77 and it's mounted about 20-25 feet above the ground.

1) Is it too high to work effectively (for a vertical)? The book says 7 feet 
elevation is recommended. 

2) If I want to add some radials, should they be connected to the mast 
support (insulated from the antenna) or to the bottom counterpoises where the 
shield is hooked?

    Tnx!

Cheers,
Steve     K7LXC
TOWER TECH