[TowerTalk] [Force 12 Talk] If you have a F12 linear loaded antenna, you could have some trouble

[Mel Whitten]

I replaced mine with stainless steel wire clamps similar to
http://www.jamestowndistributors.com/userportal/show_product.do?pid=286
and check them every couple years for tightness using a nut driver. As a 
result,
I've not had any problems with resonance or SWR in 5+ years with the c4xl.
Mel, k0pfx





----- Original Message ----- 
From: "Keith Dutson" <kdutson at sbcglobal.net>
To: <K7LXC at aol.com>; <towertalk at contesting.com>; 
<cq-contest at contesting.com>; <Force12Talk at qth.com>
Sent: Friday, October 03, 2008 6:15 PM
Subject: Re: [Force 12 Talk] If you have a F12 linear loaded antenna,you 
could have some trouble


> The small U-bolts on both of my C-4XL antennas rusted and operation became
> unstable on 40M.  I replaced these with stainless U-bolts and solved the
> rust problem.  However, the unstable operation persisted.  I have replaced
> the linear elements with the new Delta 40 elements.  The problem is now
> permanently fixed.
>
> Keith NM5G
>
> -----Original Message-----
> From: force12talk-bounces at qth.com [mailto:force12talk-bounces at qth.com] On
> Behalf Of K7LXC at aol.com
> Sent: Friday, October 03, 2008 5:30 PM
> To: towertalk at contesting.com; cq-contest at contesting.com; 
> Force12Talk at qth.com
> Subject: [Force 12 Talk] If you have a F12 linear loaded antenna,you could
> have some trouble
>
> Howdy --
>
>    I've had several occasions in the last several  months to fix an
> intermittent problem on Force 12 linear loaded antennas. It  turns out 
> that
> all of them had rusted U-bolts that had deteriorated and caused
> intermittent electrical contact. The U-bolts are the real little ones that
> connect the linear loaded wires and the shorting wire.
>
>    You would be well advised to include checking them  during your annual
> inspection and probably replacing them. Ultimately they will  all fail.
>
> Cheers,
> Steve     K7LXC
> TOWER TECH -
> Professional tower services for hams
>
> PS - You are doing an annual inspection aren't  you?!?
>
>
>
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