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1. [Towertalk] Antenna Spacing on New Tower (score: 1): Author: sunset392@cox.net (Ed Williams); Date: Fri, 8 Nov 2002 22:18:02 -0500; I will be installing a US Tower TX-489 and planning to install the following antennas 1. New KLM 10-30-7 LPA 1' above the tower (30' Boom & 8.25 sq ft) 2. Hy-gain Discoverer 7-2 40 Meter 2-element Be; /archives//html/Towertalk/2002-11/msg00132.html (8,030 bytes)
2. [Towertalk] Antenna Spacing on New Tower (score: 1): Author: k6uj@pacbell.net (Bob Harmon); Date: Fri, 08 Nov 2002 19:46:46 -0800; Sounds like a great antenna system, Ed ! I'm not sure about the spacing, but I am concerned about the aluminum mast. The mast is 24 feet long, and assuming you need to get the 40meter beam as high as; /archives//html/Towertalk/2002-11/msg00133.html (9,539 bytes)
3. [Towertalk] Antenna Spacing on New Tower (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Sat, 9 Nov 2002 01:17:59 -0600; There are hundreds of installations of 2L40's 10 to 14 ft above tribanders on 2 inch O.D. 1/4 inch wall STEEL Masts with yield strengths over 90,000 psi. I've forgotten the yield strength of aluminum; /archives//html/Towertalk/2002-11/msg00139.html (9,804 bytes)
4. [Towertalk] Antenna Spacing on New Tower (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Sat, 9 Nov 2002 01:17:59 -0600; There are hundreds of installations of 2L40's 10 to 14 ft above tribanders on 2 inch O.D. 1/4 inch wall STEEL Masts with yield strengths over 90,000 psi. I've forgotten the yield strength of aluminum; /archives//html/Towertalk/2002-11/msg00141.html (9,769 bytes)
5. [Towertalk] Antenna Spacing on New Tower (score: 1): Author: K7LXC@aol.com (K7LXC@aol.com); Date: Sat, 9 Nov 2002 08:51:02 EST; ft) Okay, let's get a little more basic. What's your county windspeed rating? If you don't know, you can look it up at <A HREF="http://www.championradio.com">www.championradio.com</A> under Tech Note; /archives//html/Towertalk/2002-11/msg00144.html (8,776 bytes)
6. [Towertalk] Antenna Spacing on New Tower (score: 1): Author: ac5tm@bellsouth.net (Thomas Miller); Date: Sat, 9 Nov 2002 07:52:20 -0800; According to a chart in "Physical Design of Yagi Antennas" (Leeson, ARRL) yeild strenths(lbin*sq) vary from 15klbs for 6063-T5 drawn alum. tube to 70klbs for 7075-T6 extruded alum. tube. compared to; /archives//html/Towertalk/2002-11/msg00145.html (11,635 bytes)

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