Towertalk
[Top] [All Lists]

Re: [TowerTalk] low band antenna without good ground

To: Al Kozakiewicz <akozak@hourglass.com>
Subject: Re: [TowerTalk] low band antenna without good ground
From: Alex K2BB <alex.k2bb@gmail.com>
Date: Thu, 29 Sep 2011 21:10:39 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
I am sorry for that "typo" :)
That suppose to be losses, of course. 

AM

On Sep 29, 2011, at 20:21, Al Kozakiewicz <akozak@hourglass.com> wrote:

> Radiation resistance will not drop, nor would you want it to!  Ground losses 
> will drop and so should the feedpoint impedance.
> 
> The lifetime of buried aluminum depends on the pH of the soil.  Usually, it 
> isn't long.
> 
> Al
> AB2ZY
> 
> -----Original Message-----
> From: towertalk-bounces@contesting.com 
> [mailto:towertalk-bounces@contesting.com] On Behalf Of Alex K2BB
> Sent: Thursday, September 29, 2011 8:15 PM
> To: Gene Smar
> Cc: ROBERT HARMON; <towertalk@contesting.com>
> Subject: Re: [TowerTalk] low band antenna without good ground
> 
> I got a roll of aluminum welding wire, the one which is 0.03"...
> The plan is to lay down 30 radials 30-35 feet long to test how much radiation 
> resistance drops. 
> I am just wondering- how long that wire will last if I bury it? What about 
> thicker wire used for electric fences?
> 
> AM
> 
> On Sep 29, 2011, at 19:39, "Gene Smar" <ersmar@verizon.net> wrote:
> 
>> Bob:
>> 
>>    Instead of a copper ground clamp (likely to cause corrosion at the 
>> connection point due to dissimilar metals in contact in water), I'd 
>> suggest using stainless steel bolts, lockwashers and nuts plus a pair 
>> of fender washers (above and below the screen) wherever you wish to make a 
>> connection.
>> Fender washers are exceptionally large in diameter as compared to 
>> normal washer sizes for the particular diameter of bolt.  They gather 
>> a lot of metal in the connection area when applied.
>> 
>> 
>> 73 de
>> Gene Smar  AD3F
>> 
>> 
>> 
>> 
>> ----- Original Message -----
>> From: "ROBERT HARMON" <k6uj@pacbell.net>
>> To: <towertalk@contesting.com>
>> Sent: Thursday, September 29, 2011 6:36 PM
>> Subject: [TowerTalk] low band antenna without good ground
>> 
>> 
>>> I have been  gathering up materials for rolling out galvanized 
>>> chicken wire for a ground screen from my vertical as discussed here 
>>> recently.  I'm trying to figure out how to make the electrical 
>>> connection at the base of the vertical.  Is there a nifty way to do it ?
>>> My first thought was to take the
>>> very end of each roll and squeeze it together into a bunch and attach 
>>> a cooper clamp used for ground rods.
>>> How do you make your connection ?
>>> 
>>> Bob
>>> K6UJ
>>> 
>>> 
>>> 
>>> _______________________________________________
>>> 
>>> 
>>> 
>>> _______________________________________________
>>> TowerTalk mailing list
>>> TowerTalk@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/towertalk
>> 
>> _______________________________________________
>> 
>> 
>> 
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk@contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
> _______________________________________________
> 
> 
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

<Prev in Thread] Current Thread [Next in Thread>