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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 |
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