Search String: Display: Description: Sort:

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+Measuring\s+beam\s+forward\s+gain\.\s*$/: 3 ]

Total 3 documents matching your query.

1. [TowerTalk] Measuring beam forward gain. (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Thu, 31 Dec 2009 05:02:06 -0800
I only use these measurements to measure relative gain between two different antenna configurations. Measuring absolute gain is a whole nuther ball of wax. For my measurements, I put the sig gen 1000
/archives//html/Towertalk/2009-12/msg00326.html (8,799 bytes)

2. Re: [TowerTalk] Measuring beam forward gain. (score: 1)
Author: "Richard (Rick) Karlquist" <richard@karlquist.com>
Date: Thu, 31 Dec 2009 07:42:57 -0800
I use a 66 foot low dipole, which I believe is adequately broadband for the 40 meter band. Obviously, you don't want to use a vertical because the polarization would be wrong for a Yagi. I happen to
/archives//html/Towertalk/2009-12/msg00329.html (8,280 bytes)

3. Re: [TowerTalk] Measuring beam forward gain. (score: 1)
Author: jimlux <jimlux@earthlink.net>
Date: Fri, 01 Jan 2010 06:10:39 -0800
Use something small and non resonant. A foot or two of wire laying on the table would work, and be equally inefficient at all frequencies across the band. ____________________________________________
/archives//html/Towertalk/2010-01/msg00004.html (7,238 bytes)


This search system is powered by Namazu