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1. [TowerTalk] SWR Problem with Tri-Bander - help! (score: 1): Author: RLVZ@aol.com; Date: Tue, 22 Feb 2005 16:10:55 EST; Hi Guys, I've got a Hy-Gain TH3-Mark4 that has a rather unusual SWR problem and wonder if you have any thoughts on fixing the problem. Here's the scoop: 1) The SWR is always fine on 10 and 20 meters.; /archives//html/Towertalk/2005-02/msg00529.html (7,514 bytes)
2. Re: [TowerTalk] SWR Problem with Tri-Bander - help! (score: 1): Author: "Keith Dutson" <kjdutson@earthlink.net>; Date: Tue, 22 Feb 2005 16:29:30 -0600; This symptom is likely heat-related which would explain the variance over time on 500 watts. Simple fact, heat is generated by power that is consumed but not radiated. It could be that this heat is a; /archives//html/Towertalk/2005-02/msg00532.html (9,838 bytes)
3. Re: [TowerTalk] SWR Problem with Tri-Bander - help! (score: 1): Author: "Pat Barthelow" <aa6eg@hotmail.com>; Date: Tue, 22 Feb 2005 14:44:54 -0800; Keith has it right, below... Try this to isolate the problem. Get a full power dummy load...heathkit cantenna or assorted high power dummy loads Disconnet the coax at the antenna and feed on 15 meter; /archives//html/Towertalk/2005-02/msg00533.html (10,463 bytes)
4. Re: [TowerTalk] SWR Problem with Tri-Bander - help! (score: 1): Author: Gary Schafer <garyschafer@comcast.net>; Date: Tue, 22 Feb 2005 17:53:56 -0500; Easiest way to check the balun is to hook the feed line to the antenna without the balun and see if the same thing happens. Try a different swr meter. My bet is on a trap heating. 73 Gary K4FMX _____; /archives//html/Towertalk/2005-02/msg00534.html (11,438 bytes)

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