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## Re: [TowerTalk] Dipole Problem

 To: , Re: [TowerTalk] Dipole Problem "Mike Brown" Thu, 19 Feb 2004 00:44:46 -0000
 ```You'll get that kind of reading if the ends are too close together. If your antenna is U shaped, or V shaped, then that is the problem. Antennas that zig and zag around should have a low swr, as long as the ends are as far apart as you can get them. I have a 160m dipole on a 50x130 lot that does a lot of zigging and zagging around off my 40ft tower. Keeping the ends at opposite ends of the lot, I have a 1:1 at around 1850. This isn't an ideal situation, but a 2.3:1 SWR on 75m should be easy to match with an auto tuner, or manual tuner. The correct way to put up a dipole (if you can) is to keep it in a fairly straight line. But, if what you are doing is the best you can, use a tuner to keep the rig happy and have fun! 73, Mike K9MI ----- Original Message ----- From: To: Sent: Wednesday, February 18, 2004 22:17 PM Subject: [TowerTalk] Dipole Problem > I always thought a dipole was simple. First the description: > > 75 meter dipole (58.5 feet per leg) placed 4 feet above peak of second story > roof. Roof is 40 feet wide so ran extra wire at right angle outward toward > rest of house (big square "U"). > Center of dipole is in center of 40 foot section using a large egg insulator > and an SO-239 > to start, balun later. > > My AEA-HF and Autek RF-1 both read resonance at 3968 KHz which is fine BUT > SWR is about 2.3:1, R=29 ohms. > > The only thing I can figure is the way I wrapped the wire on the egg > insulator: so that if > the insulator were to break, the wires would catch each other and not part. > > Could there be that much capacitance there to throw my reading off that much? > The wires are at right angles to each other. Any other suggestions? > > TIA. Geoff, K6TFZ > _______________________________________________ > > See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA. > > _______________________________________________ > TowerTalk mailing list > TowerTalk@contesting.com > http://lists.contesting.com/mailman/listinfo/towertalk --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.588 / Virus Database: 372 - Release Date: 2/13/2004 _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA. _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk ```
 Current Thread [TowerTalk] Dipole Problem, K6TFZ RE: [TowerTalk] Dipole Problem, David Robbins K1TTT Re: [TowerTalk] Dipole Problem, Mike Brown <= RE: [TowerTalk] Dipole Problem, Tod - ID