[TowerTalk] ground wire thoughts

Jeff Blaine KeepWalking188 at ac0c.com
Thu Dec 24 23:23:10 EST 2020


Jim, if what you are saying is the case, then yes, I agree.

I would add that I am pretty sure that a lower band parasitic vertical 
array (an inverted L is a top loaded vert in reality) needs a VERY 
EXCELLENT ground to work right.  And that means a pretty limited amount 
of metals in the field as well.  A few radials off to one side is 
definitely not going to make a guy smile much in the end.

If that's literally the only option, then investing a lot more in 
getting radial concentration around the vert is needed.  And in the 
worst case, driving the pair using phasing lines and forgoing the 
parasitic plan.

73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com


On 12/24/20 7:02 PM, Jim Brown wrote:
> On 12/24/2020 2:58 PM, Jeff Blaine wrote:
>> I guess I'm missing what's the "very bad idea" part of this.  We are 
>> talking RF here, not lightning. Right?  Antenna in the middle of this 
>> field, right?
>
> Thanks for raising the question. As I understand it, he's not loading 
> his tower, but is planning a 2-el 80M array along one side of his lot. 
> If I got it wrong and he is loading the tower, then yes, a set of 
> radials from the tower makes perfect sense, with additional radials 
> for the future array.
>
> 73, Jim
>
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