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21. Re: Topband: T Vertical feed (score: 1): Author: DAVID CUTHBERT <telegrapher9@gmail.com>; Date: Fri, 27 Jan 2012 09:51:39 -0700; I had considered this case and it is valid with lossless GND or in free space. But over lossy ground one resonant "radial" with many short radials carries the about the same current. While not entire; /archives//html/Topband/2012-01/msg00343.html (10,274 bytes)
22. Re: Topband: T Vertical feed (score: 1): Author: DAVID CUTHBERT <telegrapher9@gmail.com>; Date: Fri, 27 Jan 2012 10:32:05 -0700; Charles, Joe listed some symptoms of excessive feedine common-mode current such as RF bites and RF feedback. If you do not suffer from any of these effects a balun may be of no use. If one does exper; /archives//html/Topband/2012-01/msg00344.html (12,112 bytes)
23. Re: Topband: T Vertical feed (score: 1): Author: "Joe Subich, W4TV" <lists@subich.com>; Date: Fri, 27 Jan 2012 12:58:01 -0500; I listed the most obvious symptoms - ones which old timers will remember very well. They are certainly not the only symptoms and others can be even more dangerous resulting in intermittent problems t; /archives//html/Topband/2012-01/msg00345.html (10,999 bytes)
24. Re: Topband: T Vertical feed (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Fri, 27 Jan 2012 10:07:58 -0800; There is NO DOWNSIDE to using a good common mode choke other than cost and weight, and as W4TV has noted, there are downsides to NOT using one. As it turns out, there was a typo in the link I posted; /archives//html/Topband/2012-01/msg00346.html (9,712 bytes)
25. Re: Topband: T Vertical feed (score: 1): Author: Guy Olinger K2AV <olinger@bellsouth.net>; Date: Fri, 27 Jan 2012 14:58:32 -0500; Sometimes the only symptom of common mode connection to your antenna is excessive "ambient" noise, usually from the AC wiring system in the house. A on/in ground radial field is not a monolithic sing; /archives//html/Topband/2012-01/msg00348.html (14,765 bytes)
26. Re: Topband: T Vertical feed (score: 1): Author: Charles Moizeau <w2sh@msn.com>; Date: Fri, 27 Jan 2012 18:10:20 -0500; Guy, Your text is very instructive. I hope I'm not the only follower of this thread who up until now thought that the shield of the coax feedline was acquiring undesired current by capacitive couplin; /archives//html/Topband/2012-01/msg00352.html (15,100 bytes)
27. Re: Topband: T Vertical feed (score: 1): Author: Guy Olinger K2AV <olinger@bellsouth.net>; Date: Sat, 28 Jan 2012 02:51:23 -0500; Yup. Metal to metal contact with the radials, folks don't have a good mental summarizing device for radials, thinking that "ground" is some kind of sucking everything up magic medium. Text below... 7; /archives//html/Topband/2012-01/msg00354.html (17,244 bytes)

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