[TZ] Elevated radials vs buried ones

[Alan Alsobrook]

On 5/17/2016 7:50 PM, Rolf Sandmeier wrote:

> I'm wondering about the amount of absorption  that could result from
> the trees top leaves, possibly affecting the interaction between the
> tower  H field and the radials E field. Or is it negligible at that
> frequency?

First, the trees can absorb a _very_ significant amount of signal. I had 
a case were the ground field was allowed to overgrow with trees, when 
the tress were removed, which also removed any remains of the ground 
system the signal strength at 1km doubled. The field then when up 
significantly again when the ground system was replaced.

Elevated radial work very well. The current theory is 6 radials elevated 
8 deg above ground. Note the far ends of the elevated radials will need 
to be very well insulated. They will have high voltage on them. 
Grounding the ends will cause signal loss.

If you look back in the history here (as you may have already) you will 
see quite a bid of discussion on this subject.

-- 
Alan Alsobrook CSRE AMD
aalso at bellsouth.net