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?!?
**************New MapQuest Local shows what's happening at your destination.
Dining, Movies, Events, News & more. Try it out!
(http://local.mapquest.com/?ncid=emlcntnew00000001)
_______________________________________________
Force12Talk mailing list provided as a service by Force 12 Antennas, Inc.
Force12 Web Site: http://www.force12inc.com
To Submit Message to the List: Force12Talk@qth.com List Help:
http://mail.qth.com/mailman/listinfo/force12talk_qth.com
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|