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@sbcglobal.net>
To: <K7LXC@aol.com>; <towertalk@contesting.com>;
<cq-contest@contesting.com>; <Force12Talk@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@qth.com [mailto:force12talk-bounces@qth.com] On
> Behalf Of K7LXC@aol.com
> Sent: Friday, October 03, 2008 5:30 PM
> To: towertalk@contesting.com; cq-contest@contesting.com;
> Force12Talk@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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