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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+TA\-33\s+Jr\.\s+SWR\s+curve\s*$/: 8 ]

Total 8 documents matching your query.

1. [TowerTalk] TA-33 Jr. SWR curve (score: 1): Author: "Neal Sacon" <neal@sacon.net>; Date: Mon, 13 Jun 2005 22:05:46 -0700; After everything was all cleaned-up and re-assembled, I have the antenna set at the "Code 11" points, but it seems to be a little long - I got SWR readings on 20M of 1.4 @ 14.010, 2:1 @ 14.150, 2.5 @; /archives//html/Towertalk/2005-06/msg00356.html (7,109 bytes)
2. [TowerTalk] TA-33 Jr. SWR curve (score: 1): Author: "Neal Sacon" <neal@sacon.net>; Date: Tue, 14 Jun 2005 06:52:04 -0700; Thanks to all who replied on this - I'll get busy with all the suggestions. One question - why does placing the antenna vertical with the reflector a few feet off the ground change the result? This w; /archives//html/Towertalk/2005-06/msg00359.html (8,572 bytes)
3. Re: [TowerTalk] TA-33 Jr. SWR curve (score: 1): Author: "Keith Dutson" <kdutson@sbcglobal.net>; Date: Tue, 14 Jun 2005 10:09:01 -0500; Although somewhat effective, tuning a Yagi by placing the reflector on the ground and pointing up will yield inaccurate VSWR and resonance readings. Basically, the reflector is being replaced by the; /archives//html/Towertalk/2005-06/msg00360.html (10,053 bytes)
4. Re: [TowerTalk] TA-33 Jr. SWR curve (score: 1): Author: <paul@w8aef.com>; Date: Tue, 14 Jun 2005 17:18:51 -0000; For all intent and purposes the antenna is blind to everything behind the reflector. All you gotta do is get the reflector off the ground. de Paul, W8AEF _____________________________________________; /archives//html/Towertalk/2005-06/msg00366.html (9,433 bytes)
5. Re: [TowerTalk] TA-33 Jr. SWR curve (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Tue, 14 Jun 2005 12:07:00 -0700; This is not true. The reflector has RF current flowing in it. Put that element close to a dielectric and the current distribution and magnitude will change because of the dielectric loading. It's no; /archives//html/Towertalk/2005-06/msg00370.html (10,367 bytes)
6. Re: [TowerTalk] TA-33 Jr. SWR curve (score: 1): Author: <paul@w8aef.com>; Date: Tue, 14 Jun 2005 20:03:33 -0000; Are you saying that the "raise the reflector off the ground and point the antenna straight up" method that I have used on: 204BA @ 73' 153BA @ 88' 103BA @ 95' TH3-JR @ 45' TH3-MK3 @ 47' C-3 WARC-7 2m; /archives//html/Towertalk/2005-06/msg00372.html (12,874 bytes)
7. Re: [TowerTalk] TA-33 Jr. SWR curve (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Tue, 14 Jun 2005 14:50:57 -0700; What I was trying to say is that it DOES make a difference if there's ground behind the reflector. It's not like the reflector is a perfect mirror. The change in feedpoint impedance isn't very big, s; /archives//html/Towertalk/2005-06/msg00374.html (13,635 bytes)
8. Re: [TowerTalk] TA-33 Jr. SWR curve (score: 1): Author: K4SB <k4sb@bellsouth.net>; Date: Wed, 15 Jun 2005 04:30:35 +0000; I don't quite understand why the only adjustments you made were to the DE. By definition, a beta match is looking for a negative reactance. I wonder why the other elements were not adjusted. Also, we; /archives//html/Towertalk/2005-06/msg00382.html (9,426 bytes)

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