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Can the problem be solved by feeding DE with balun, bonding coax feeding balun to boom? Am about to erect 3CSXL and been wondering about this. 73 Barry Kirkwood PhD ZL1DD Signal Hill Homestay 66 Cory Road Palm Beach Waiheke Island 1240 NEW ZEALAND http://www.waiheke.co.nz/signal.htm/ ----- Original Message ----- From: ww <dj7aa-wil@t-online.de> To: Guy Olinger <olinger@bellsouth.net>; Force12T-reflector <Force12Talk@qth.com> Sent: Wednesday, 30 August, 2000 2:56 AM Subject: Re: [Force 12 Talk] Isolated elements > Is the driven element also grounded ore isolated? > > I using this Force 12 Magnum since 5 years, and believe me, I know how about > i > speak. > The Yagi I mean (ZX 20m monoband) have grounded driven element with a > gamma match for driving. And there are NO static when on the Force12 the > S-meter goes constant S9. > And, the second 20m monoband Yagi is on a seperate tower, 30m apart from > the Force 12 and on top of this tower, so there is no shield ore anything > like > this. > > Wil DJ7AA > > Guy Olinger schrieb: > > > Who said that element-center-grounded yagis are not effected by > > snow/rain static? Not true. > > > > Can think of many times when W4BVV's big 40, 20 and 15 yagis (all center > > grounded) got rain and snow static. One time had snow static on 40 > > meters that was 20 over S9. Couldn't hear anything except the locals for > > over an hour. > > > > One thing that has been reported, for some with more than one antenna on > > a tower, the top antenna gets noised up more than the lower one(s), as > > if the upper one is somehow "shielding" the lower, mechanism unknown. > > > > - - . . . . . . - - . . . . - - . . - . . > > > > 73, Guy > > k2av@contesting.com > > Apex, NC, USA > > > > ----- Original Message ----- > > From: Wil DJ7AA <dj7aa-wil@t-online.de> > > To: Danny <ON7NQ@pandora.be>; Force12T-reflector <Force12Talk@qth.com> > > Sent: Tuesday, August 29, 2000 6:23 AM > > Subject: Re: [Force 12 Talk] Isolated elements > > > > > > > > I have lots of trouble with these insolated elements. I using Magnum > > > 620-340 and every time we get havy rain showers ore snow showers, > > > the antenna have very havy static noise, wich is not on a beam with > > > center grounded elements. Think this phaenomen is like a Corona > > Effect. > > > The antenna become useless on this time for receiving. > > > I have mostly a seperat 4 ele monobander as second antenna (ZX-Yagi) > > > and this antenna does not have this effects. > > > > > > Of course, a closed quadloop also dont have this effects. > > > > > > 73 Wil > > > > > > > > > -------------------------------------------- > > > Force12Talk mailing list provided as a service by Force 12 Antennas, > > Inc. > > > Force 12 Web site: http://www.qth.com/force12 > > > > > > Submissions: send to Force12Talk@qth.com > > > To unsubscribe: send a blank e-mail to Force12Talk-leave@qth.com > > > Force12Talk Message Archive: http://www.qth.com/force12/list/force12talk > > > For problems with the list, contact n4zr@qth.com > > > > > > > > > > > > > -------------------------------------------- > Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. > Force 12 Web site: http://www.qth.com/force12 > > Submissions: send to Force12Talk@qth.com > To unsubscribe: send a blank e-mail to Force12Talk-leave@qth.com > Force12Talk Message Archive: http://www.qth.com/force12/list/force12talk > For problems with the list, contact n4zr@qth.com > > > -------------------------------------------- Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. Force 12 Web site: http://www.qth.com/force12 Submissions: send to Force12Talk@qth.com To unsubscribe: send a blank e-mail to Force12Talk-leave@qth.com Force12Talk Message Archive: http://www.qth.com/force12/list/force12talk For problems with the list, contact n4zr@qth.com |
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