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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+80\s+meter\s+vertical\s+question\s*$/: 6 ]

Total 6 documents matching your query.

1. [TowerTalk] 80 meter vertical question (score: 1)
Author: john nistico <electric911inc@hotmail.com>
Date: Thu, 20 Mar 2014 19:40:49 -0400
I have put up a 80 wire vertical in some trees seeing I do not have a tower. I cut it 62ft6in so it should be on 3.750 however it seems long and the swr is 1:1 at 3550 or so. I have 10 radials and my
/archives//html/Towertalk/2014-03/msg00135.html (6,873 bytes)

2. Re: [TowerTalk] 80 meter vertical question (score: 1)
Author: Mike Fahmie <wa6zty@yahoo.com>
Date: Thu, 20 Mar 2014 17:08:40 -0700 (PDT)
You didn't mention how long your radials are and whether they are buried or elevated, but for 65' radials just off the ground, EZNEC says that resonance is as you indicated, 3550 KHz.  This is with #
/archives//html/Towertalk/2014-03/msg00136.html (8,678 bytes)

3. Re: [TowerTalk] 80 meter vertical question (score: 1)
Author: john@kk9a.com
Date: Thu, 20 Mar 2014 20:59:20 -0400
I would just shorten the antenna. If you used insulated wire it would explain the difference. John KK9A I have put up a 80 wire vertical in some trees seeing I do not have a tower. I cut it 62ft6in s
/archives//html/Towertalk/2014-03/msg00137.html (7,510 bytes)

4. Re: [TowerTalk] 80 meter vertical question (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Thu, 20 Mar 2014 22:54:44 -0700
On 3/20/2014 4:40 PM, john nistico wrote: I have put up a 80 wire vertical in some trees seeing I do not have a tower. I cut it 62ft6in so it should be on 3.750 however it seems long and the swr is 1
/archives//html/Towertalk/2014-03/msg00143.html (8,307 bytes)

5. Re: [TowerTalk] 80 meter vertical question (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Fri, 21 Mar 2014 00:02:39 -0700
That statement is completely true as far as it goes, but I think it is possible to get a 1.1 SWR with a vertical portion that is electrically longer than 1/4 wavelength and radials that are somewhat
/archives//html/Towertalk/2014-03/msg00144.html (9,857 bytes)

6. Re: [TowerTalk] 80 meter vertical question (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Fri, 21 Mar 2014 11:16:55 +0000
Trees are not air, they are conductive enough to provide some loading on the vertical, the closer to the trees the worse it will be. so forget the calculations now and just cut to tune where you want
/archives//html/Towertalk/2014-03/msg00147.html (8,825 bytes)


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