[TowerTalk] The Need for Grounding

[Jim Brown]

On Thu,1/14/2016 9:45 AM, David Robbins wrote:
> what is the intended purpose of said ground screen not being connected to the tower.  if you area going to shuntfeed the tower then you want the ground screen as big as you can make it and attached securely to the tower.

Right. And they SHOULD be bonded to the mesh in the slab. The question 
is, the usefulness of elevated radials on a grounded tower. To take 
advantage of their elevation, they must be bonded to the tower. I would 
bond them at the base, sloping them up from that point to their elevated 
height as they extend from the tower. But they will, by virtue of their 
height, reduce somewhat the effective height of the antenna. I'm going 
from N6LF's excellent work on the subject, and by modeling. I'd pay 
attention contrary advice from guys like K1TTT and W3LPL.

73, Jim K9YC