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1. [TenTec] Smaller 20M Rohmbic Question (score: 1): Author: "Don Jones" <ko7i@comcast.net>; Date: Sun, 10 Apr 2011 18:31:38 -0700; I am curious if anyone has any experience with smaller sized rhombic's using 2 wavelength legs? What is a proper angle for the feed point? Thanks, Don Jones KO7i Arlington, WA _______________________; /archives//html/TenTec/2011-04/msg00195.html (7,296 bytes)
2. Re: [TenTec] Smaller 20M Rohmbic Question (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>; Date: Sun, 10 Apr 2011 20:41:01 -0500; Chart in my 1994 edition ARRL antenna handbook says the optimum angle varies with the the wave angle. Between 52 degrees for zero wave angle to 60 degrees for 30 degree wave angle. That's the tilt an; /archives//html/TenTec/2011-04/msg00196.html (7,941 bytes)
3. Re: [TenTec] Smaller 20M Rohmbic Question (score: 1): Author: Steve Hunt <steve@karinya.net>; Date: Mon, 11 Apr 2011 12:03:09 +0100; It models as having a gain of 8dBd and a half-power beamwidth of about +/- 30 degrees. Hope you can erect it in the direction you need ;) 73, Steve G3TXQ _____________________________________________; /archives//html/TenTec/2011-04/msg00197.html (7,046 bytes)
4. Re: [TenTec] Smaller 20M Rohmbic Question (score: 1): Author: "Don Jones" <ko7i@comcast.net>; Date: Mon, 11 Apr 2011 12:31:05 -0700; Thank you Jerry and Steve, I was figuring 70-ish at the feed point based upon what I could find about vee-beams. Here in W. WA we are going to point it at 80 deg magnetic for field day. We have a ver; /archives//html/TenTec/2011-04/msg00198.html (9,835 bytes)
5. Re: [TenTec] Smaller 20M Rohmbic Question (score: 1): Author: Stuart Rohre <rohre@arlut.utexas.edu>; Date: Mon, 11 Apr 2011 14:45:00 -0500; Austin Amateur Radio Club has many years of Field Days using bi directional V beams of 10 waves on 10m. Mostly, we used them on 20m and find they are similar to rhombics with easier construction. You; /archives//html/TenTec/2011-04/msg00199.html (8,852 bytes)
6. Re: [TenTec] Smaller 20M Rohmbic Question (score: 1): Author: John Graves <jh.graves@verizon.net>; Date: Mon, 11 Apr 2011 16:00:04 -0400; Sturat, I am plumbing unknown depths but think our group will need a wire antenna of some flavor for 80/40 use. Have you had any experience with 80/40M Delta loops. We have a nice field athere are so; /archives//html/TenTec/2011-04/msg00200.html (8,649 bytes)
7. Re: [TenTec] Smaller 20M Rohmbic Question (score: 1): Author: Stuart Rohre <rohre@arlut.utexas.edu>; Date: Mon, 11 Apr 2011 15:12:08 -0500; John, I hear you on pole set up for FD! We got great results from Horizontal Delta loops as our club FD migrated from big Vee beams, to Extended Double Zepps for 80m used on higher bands, to today. W; /archives//html/TenTec/2011-04/msg00201.html (9,040 bytes)
8. Re: [TenTec] Smaller 20M Rohmbic Question (score: 1): Author: Kevin Anderson <k9iua@yahoo.com>; Date: Tue, 12 Apr 2011 12:18:42 -0700 (PDT); A club that I attended their FD at for a number of years had a 40 meter bi-directional wire beam they used. You might be able to do similar, but in your case being it to be mostly one-directional due; /archives//html/TenTec/2011-04/msg00204.html (8,176 bytes)

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