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Re: Topband: Grounding TX antenna

To: rick darwicki <n6pe@yahoo.com>
Subject: Re: Topband: Grounding TX antenna
From: "Richard (Rick) Karlquist" <richard@karlquist.com>
Date: Tue, 18 Oct 2011 09:38:22 -0700
List-post: <topband@contesting.com">mailto:topband@contesting.com>

On 10/18/2011 8:29 AM, rick darwicki wrote:

> I am using a DX Engineering current feed line choke at the base on my 
> elevated inverted L for 160 M and a N6RK shielded coax loop with varactor 
> tuning for 80-160M.
>
> The loop is only 20 feet away from the TX antenna and if I ground the 
> inverted L coax at the shack end there is no reduction to reradiation noise 
> that I can hear.
>
> I was wondering if with the feedline choke I need to short the L to ground on 
> the antenna side of the choke?

> Rick, N6PE

You want to OPEN the inverted L to take it out of play during receive.
Having said that, the pattern of the loop could still be distorted.
I know that a loop doesn't work well near my 40/80 meter inverted vees, 
which are certainly not resonant on 160.

Rick N6RK
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