[TowerTalk] Radial Connection to tower

[Stan Stockton]

Rick,

Thank you for the advice.  

I don't know when I'll get to this with my busy retirement schedule (seriously :-)) but I will be sure to make record of the impedance at the base of each of these verticals with the current set up and then see what they look like after the change is made.  

The 80m verticals' bases are fairly small (guessing about 16 inches square) with about 8 inches of 25G above the concrete pad and then G10 rod insulating that from the rest of the 25G.  It will be interesting to see if I can make a notable change in the resonant frequency on the first one.

73...Stan, K5GO

> On Dec 13, 2015, at 8:40 PM, Richard (Rick) Karlquist <richard at karlquist.com> wrote:
> 
> 
> 
>> On 12/13/2015 1:16 PM, Stan Stockton wrote:
>> Rick,
>> 
>> OK.  Just read this.  What would your best suggestion be for me to most effectively fix what I have described?
>> 
>> Stan, K5GO
> 
> I think the general advice is to have a ring
> around your foundation where the radials attach,
> and then another ring immediately around the
> tower.  Between the rings you want a dozen or
> two "radials" that run across the concrete.
> No matter how good the ground radial system
> is outside the outer ring, you still need a
> good connection from the inner ring to the
> outer ring.  If you skimp, you will see the
> apparent resonant frequency of the vertical
> go down.  The bigger your foundation, the
> more important this is.
> 
> Rick N6RK