- 21. Re: [TowerTalk] Antenna Modeling (score: 1)
- Author: Grant Saviers <grants2@pacbell.net>
- Date: Wed, 11 Jul 2018 14:45:10 -0700
- For some good advice on modeling fans see https://ac6la.com/aecollection4.html Also, they are sensitive to height above ground so modeling at the installed geometry is advised. Using the modeling tec
- /archives//html/Towertalk/2018-07/msg00081.html (9,765 bytes)
- 22. Re: [TowerTalk] Antenna Modeling (score: 1)
- Author: "Jim W7RY" <jimw7ry@gmail.com>
- Date: Wed, 11 Jul 2018 18:08:03 -0500
- I can attest to how difficult it is too! I really struggled with my 80-40 fan inverted vee. Secret was to get the wires far apart, (not really in fan style), but that helped the interactions. If your
- /archives//html/Towertalk/2018-07/msg00082.html (11,727 bytes)
- 23. Re: [TowerTalk] Antenna Modeling (score: 1)
- Author: terry burge <ki7m@comcast.net>
- Date: Wed, 11 Jul 2018 16:34:53 -0700 (PDT)
- Just a quick comment, I tried to get 40,60 and 80 meters in a fan inverted-V to work for me. NOT! Just could not get them to play although I had just a little luck with 60 meters. And this started wi
- /archives//html/Towertalk/2018-07/msg00083.html (13,596 bytes)
- 24. Re: [TowerTalk] Antenna Modeling (score: 1)
- Author: Jim Brown <jim@audiosystemsgroup.com>
- Date: Wed, 11 Jul 2018 16:45:04 -0700
- First, my primary antennas for 80 and 40 have been a pair of 80/40 fans at right angles to each other. They are approximately horizontal, the approximate part being sag in the middle. The two wires a
- /archives//html/Towertalk/2018-07/msg00084.html (9,414 bytes)
- 25. Re: [TowerTalk] Antenna Modeling (score: 1)
- Author: Jim Brown <jim@audiosystemsgroup.com>
- Date: Wed, 11 Jul 2018 16:48:39 -0700
- If you have neighbors the answer is neither. Antennas like this cannot be choked to kill noise picked up on the feedline, so they tend to be noisy. You can't work 'em if you can't hear 'em. Resonant
- /archives//html/Towertalk/2018-07/msg00085.html (8,855 bytes)
- 26. Re: [TowerTalk] Antenna Modeling (score: 1)
- Author: Grant Saviers <grants2@pacbell.net>
- Date: Wed, 11 Jul 2018 17:06:57 -0700
- I modeled my 80/40/20 fans with the referenced zero length transmission line (Cebik/AC6LA) with the centers about 4" apart on an acrylic 5 x 9 x 1/4" sheet and the tips 24" apart spread with pvc rods
- /archives//html/Towertalk/2018-07/msg00086.html (11,506 bytes)
- 27. Re: [TowerTalk] Antenna Modeling (score: 1)
- Author: Dan Bookwalter via TowerTalk <towertalk@contesting.com>
- Date: Thu, 12 Jul 2018 00:08:00 +0000 (UTC)
- In late 90's , I had a 40/80 combo , apex 70ft , ends at roughly 30ft I suppose I forget which order I trimmed them , but , got both bands working nicely on CW end , never modeled it ... but , from
- /archives//html/Towertalk/2018-07/msg00087.html (11,071 bytes)
- 28. Re: [TowerTalk] Antenna Modeling (score: 1)
- Author: "Richard (Rick) Karlquist" <richard@karlquist.com>
- Date: Wed, 11 Jul 2018 17:18:12 -0700
- On 7/11/2018 10:52 AM, Bruce Jungwirth wrote: Im looking for someone in or around St Paul Mn that is fluent in EZNEC. My current wire Antenna has been up for over 20 years and needs to be replaced. I
- /archives//html/Towertalk/2018-07/msg00088.html (9,562 bytes)
- 29. Re: [TowerTalk] Antenna Modeling (score: 1)
- Author: Jim Brown <jim@audiosystemsgroup.com>
- Date: Wed, 11 Jul 2018 17:19:10 -0700
- On 7/11/2018 5:08 PM, Dan Bookwalter via TowerTalk wrote: I know everyone is onto modeling everything, I am in the camp of , put it up , give it a try , dont like it , try again ... We have lost so
- /archives//html/Towertalk/2018-07/msg00089.html (9,985 bytes)
- 30. Re: [TowerTalk] Antenna Modeling (score: 1)
- Author: Dan Bookwalter via TowerTalk <towertalk@contesting.com>
- Date: Thu, 12 Jul 2018 00:38:12 +0000 (UTC)
- Jim Oh I fully understand, but , I am not currently in a position to do that ... when I get back to a point where I can put up a real antenna(s), I am sure I will ask these questions ...but , I sti
- /archives//html/Towertalk/2018-07/msg00090.html (10,735 bytes)
- 31. Re: [TowerTalk] Antenna Modeling (score: 1)
- Author: David Gilbert <xdavid@cis-broadband.com>
- Date: Wed, 11 Jul 2018 21:29:25 -0700
- Same here. Trial and error may eventually work, but most likely you won't know why. Modeling, especially if you investigate the currents and their phasing, will help you learn and understand why so
- /archives//html/Towertalk/2018-07/msg00091.html (11,391 bytes)
- 32. Re: [TowerTalk] Antenna Modeling (score: 1)
- Author: David Gilbert <xdavid@cis-broadband.com>
- Date: Wed, 11 Jul 2018 21:46:39 -0700
- You'd be surprised how many wire antennas I've actually built over the years, having tried several different ones each year for Field Day. You can check the scores over the past 20 years to see what
- /archives//html/Towertalk/2018-07/msg00092.html (12,471 bytes)
- 33. Re: [TowerTalk] Antenna Modeling (score: 1)
- Author: Wes Stewart <wes_n7ws@triconet.org>
- Date: Thu, 12 Jul 2018 06:12:32 -0700
- I been reading this thread with interest and for no particular reason I'll jump in here. I've been modeling antennas since the ELNEC days. (I used Touchstone running under DOS for circuit analysis fo
- /archives//html/Towertalk/2018-07/msg00093.html (14,183 bytes)
- 34. Re: [TowerTalk] Antenna Modeling (score: 1)
- Author: Edward Mccann via TowerTalk <towertalk@contesting.com>
- Date: Fri, 13 Jul 2018 16:19:15 -0700
- Wes: Standing by for your observations on and experiences with balanced tuners. Ed McCann AG6CX Sent from my iPhone _______________________________________________ ___________________________________
- /archives//html/Towertalk/2018-07/msg00108.html (15,474 bytes)
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