Topband: Shunt feeding tower

[Carl]

Which is the same height as the one I had in the 80's at another home. With 
stacked 10-15-20 W2PV-4's it resonated somewhere around 1530 KHz if I 
remember and an Omega was the only thing that worked well.

The gamma rod was 3/4" CATV hardline running thru PVC plumbing T's and pipe 
then tied of to the tower. Spacing was 24" and the sweet spot to connect was 
60' up.

Once I found out how poorly 60 mostly 120-130' on ground radials worked I 
added 4 spokes of 4' x 50' rabbit cage wire mesh from the base and it was an 
all new antenna that really kicked butt. The soil there was glacial sand 
better used for mixing concrete! That tower helped win a 160M contest on the 
second try, going from 600 to 1200W might have helped a bit (-;

Pretty soon others started using mesh as I was talking it up often on 160 
SSB after the DX faded out on CW.

Carl
KM1H



----- Original Message ----- 
From: "Pete Smith N4ZR" <n4zr at contesting.com>
To: <topband at contesting.com>
Sent: Wednesday, August 27, 2014 6:28 AM
Subject: Re: Topband: Shunt feeding tower


> Reading about 3-wire cages and the like, I feel a serious case of shunt 
> envy.  Mine is a single wire about 18 inches from one corner of my Rohn 
> 25, connected to the tower at about 50 feet.  I used an omega match with a 
> couple of 3 KV transmitting variables, because my tower is quite tall for 
> 160 (97 feet with 3 yagis, 2 on top) and I could not find a 50-ohm 
> point.It was absurdly easy to adjust and seems to work quite well at 100 
> watts.  I'm sure there are better solutions (including Herb's), but this 
> was really simple.
>
> 73, Pete N4ZR
> Check out the Reverse Beacon Network at
> http://reversebeacon.net,
> blog at reversebeacon.blogspot.com.
> For spots, please go to your favorite
> ARC V6 or VE7CC DX cluster node.
>
> On 8/26/2014 5:12 PM, Don wrote:
>> I would like to get on 160 this question most likely has been asked a 
>> 1000 time but I need information as how or can I shunt feed my 55 ft rohn 
>> 45 .
>>
>> Don
>> _________________
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