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Re: Topband: trying to tune up 80 meter 4-Square

To: topband@contesting.com
Subject: Re: Topband: trying to tune up 80 meter 4-Square
From: Wes Stewart <wes_n7ws@triconet.org>
Date: Fri, 12 Oct 2018 18:21:31 -0700
List-post: <mailto:topband@contesting.com>
Joe is correct.

On 10/12/2018 5:45 PM, Joe Subich, W4TV wrote:
On 2018-10-12 7:10 PM, MrToby wrote:
You dont have to lower them but you need to short them to ground to
make them electrically invisible
No, with 1/4 wave elements you must *open* the feed point - disconnect
any feedlines and remove any components across the feedpoint - to make
them invisible.

73,

   ... Joe, W4TV


On 2018-10-12 7:10 PM, MrToby wrote:
You dont have to lower them but you need to short them to ground to make
them electrically invisible

On Fri, Oct 12, 2018, 6:07 PM Dick Green WC1M <wc1m73@gmail.com> wrote:

Interesting. This is not how I tuned my 40m 4-square, albeit with tubular
elements not slopers.

Anyway, my understanding is that you disconnect all four elements from the
control box and measure at the feedpoint, not through the phasing lines. I
did it that way and had no trouble tuning the elements. I did, however,
tune them to a frequency that was something like 5% below the target
resonant frequency. I can't remember the exact frequencies now, but I think
I wanted the array resonant at 7.025 MHz, so I tuned them to about 6.700
MHz. Might have been a little higher than that.

I've not heard that you must lower the other elements to do the tuning.
Certainly a pain with nesting tubular elements.

73, Dick WC1M



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