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1. Topband: RG11 75ohm and 4 square 80m (score: 1): Author: "Stein Roar Brobakken" <s-roabr@online.no>; Date: Tue, 21 Apr 2009 17:26:02 +0200; Hi Guys I been searching around the internet now for a while, I am about to build a 80m 4 square and and to cut coax for it. I am going to use black RG11 coax. I have a MFJ 259B to measure velocity f; /archives//html/Topband/2009-04/msg00062.html (9,076 bytes)
2. Re: Topband: RG11 75ohm and 4 square 80m (score: 1): Author: "Stan Stockton" <stan@aqity.org>; Date: Tue, 21 Apr 2009 12:20:25 -0500; If the velocity factor is .66 it will not physically reach from the verticals to a central point. You need to use foam dielectric coax with a velocity factor over 80% in order to make it reach. One o; /archives//html/Topband/2009-04/msg00064.html (7,599 bytes)
3. Re: Topband: RG11 75ohm and 4 square 80m (score: 1): Author: "Tom McAlee" <tom@klient.com>; Date: Wed, 22 Apr 2009 17:53:43 -0400; Not for the Comtek ACB-4. Use coax with a VF of 0.8 to make sure it will reach (such as Belden 8213) or use 3/4 wl instead. It will depend on the diameter of the conductor. Wire verticals will have; /archives//html/Topband/2009-04/msg00066.html (8,133 bytes)

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