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361. Re: [TowerTalk] Source for 20' Mast (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Mon, 12 Sep 2005 12:05:36 -0400; Array Solutions and Texas Towers are great sources for the 20 foot mast. Another you might look at is the W9IIX Ladder mast which has steps. Mine has been up there for nearly 14 years and has gone th; /archives//html/Towertalk/2005-09/msg00336.html (10,005 bytes)
362. Re: [TowerTalk] Rohn 55G Tower Damage, etc. (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Mon, 3 Oct 2005 16:45:32 -0400; I agree with Steve, K7LXC. A tower that is leaning may not really be bent. I remember a dozen years ago when W4OTX (SK) had the guys on his tower cut by a highway dept crew. It looked terrible but ge; /archives//html/Towertalk/2005-10/msg00089.html (8,549 bytes)
363. Re: [TowerTalk] XM240 INTERACTION WITH TRIBANDER (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Wed, 8 Mar 2006 21:30:34 -0500; My old 402CD is set for mid band. SWR is 1.5 at the top and 1.7 at the bottom. I helped as friend set up his XM240 to the same setting and he finds almost the same. Even at 35 feet (Tower cranked dow; /archives//html/Towertalk/2006-03/msg00151.html (8,439 bytes)
364. Re: [TowerTalk] 6 Meter Antenna Help (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Mon, 20 Mar 2006 17:53:22 -0500; I went thru this two years ago with an old Cushcraft 6 el. I made the 6 el into a new 5 el using the manuals that are on-line on the Cushcraft web page. The design was changed in 1994. There is one r; /archives//html/Towertalk/2006-03/msg00387.html (8,919 bytes)
365. Re: [TowerTalk] PHASED VERTICAL ARRAYS (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Thu, 6 Apr 2006 16:34:24 -0400; This is certainly in the archives but at one time Hy-Gain had a short 4 page brochure on how to phase 2 (or more) verticals. I use it to phase to Mor-Gain 80/40 antennas on 75 mounted nearly vertical; /archives//html/Towertalk/2006-04/msg00144.html (8,117 bytes)
366. [TowerTalk] Tet 10 to 40 beam (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Sun, 9 Apr 2006 21:07:14 -0400; I missed the start of this thread but I have the instructions for the 3 el TET 40 meter beam on a 36 foot boom. The TET beams just add a tri-bander to the 40 meter boom. KB4J had excellent results wi; /archives//html/Towertalk/2006-04/msg00188.html (7,010 bytes)
367. Re: [TowerTalk] Height for 40m yagi (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Sun, 16 Apr 2006 23:11:38 -0400; I have my Cushcraft 2 el 40 cranked down to 36 feet (14 feet over my roof). It is pointing at 45 degrees. I still seem to work out OK. It did take three calls to S01R when he called for 4's. The othe; /archives//html/Towertalk/2006-04/msg00295.html (9,577 bytes)
368. Re: [TowerTalk] need a FULTON K2550 WINCH (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Tue, 8 Aug 2006 22:44:11 -0400; I got the Fulton K2550 Winch from US Tower through HRO Atlanta. I spent $160 for the winch and shipping to me. This replaced the wimpy Fulton Winch that seized up on my old Tristao 71 footer. The 255; /archives//html/Towertalk/2006-08/msg00222.html (7,957 bytes)
369. Re: [TowerTalk] Aluminum Masts (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Sun, 20 Aug 2006 20:51:23 -0400; In the early 1980's JM Tull Metals produced a 2" OD with at least .25 wall that sounds like what W3YY was mentioning. Several local hams contacted a Mr. Smith who was a Vice President and he told the; /archives//html/Towertalk/2006-08/msg00663.html (8,608 bytes)
370. Re: [TowerTalk] Putting Line in Trees (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Tue, 5 Sep 2006 22:28:00 -0400; My yard has so many trees that are full of branches with leaves that its almost impossible to use a rod and reel, bow and arrow, or EZhang to put anything up except when the leaves are all off the tr; /archives//html/Towertalk/2006-09/msg00222.html (8,854 bytes)
371. Re: [TowerTalk] 90' sky needel (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Mon, 11 Sep 2006 14:58:27 -0400; Everthing that has been said is on target but be sure that the clamp is crimped on to hold. I used a boat crimping machine and found out its great for straight line pulling but the crimp popped in th; /archives//html/Towertalk/2006-09/msg00382.html (8,112 bytes)
372. Re: [TowerTalk] 160 meter vertical (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Wed, 27 Sep 2006 19:39:50 -0400; There was a design that W6SAI published in the May 1989 Ham Radio that might be just what the doctor ordered. The vertical was installed at WD0P and was a two wire vertical 45 feet tall with a long r; /archives//html/Towertalk/2006-09/msg00928.html (8,480 bytes)
373. Re: [TowerTalk] Building a "little pistol" contest station andtheC-31XR (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Fri, 6 Oct 2006 13:20:43 -0400; C31XR is not "little pistol". More like mid pistol. Dave K4JRB _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contest; /archives//html/Towertalk/2006-10/msg00177.html (7,945 bytes)
374. Re: [TowerTalk] KT-34 XA Problems (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Mon, 16 Oct 2006 18:26:55 -0400; My KT-34 XA was originally the KT-34X with the older aircraft cable over head struts. I have replaced the caps three times in mine and also found the straps loose on some of the elements. One additio; /archives//html/Towertalk/2006-10/msg00444.html (8,661 bytes)
375. Re: [TowerTalk] Full Wave Loop Through Trees (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Tue, 24 Oct 2006 17:45:21 -0400; I put up a 80 meter loop at my St. Simons Island, GA (IOTA 058) home in late 1991. I just looped it thru the trees. I do have an insulator on one side (this side broke twice). I had to add 12 feet to; /archives//html/Towertalk/2006-10/msg00680.html (8,827 bytes)
376. Re: [TowerTalk] rotor repair (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Sun, 19 Nov 2006 12:32:47 -0500; On any rotor repair especially if its the rotor itself call Brad at W9FX rotor works. He will also talk about the control box. Bear in mind some of the companies that sell rotors are not very interes; /archives//html/Towertalk/2006-11/msg00405.html (7,611 bytes)
377. Re: [TowerTalk] Large Arrays (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Fri, 24 Nov 2006 22:25:42 -0500; Frank, W6KPC had large arrays shown on the front cover of QST in 1949, 1959, 1969 and maybe a 1979 issue. The antennas in one of the last ones were 6 el 20 meter beams but not KLM types. In 1959 he h; /archives//html/Towertalk/2006-11/msg00665.html (7,393 bytes)
378. Re: [TowerTalk] Verticals (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Thu, 28 Dec 2006 21:29:30 -0500; There is talk of shunt fed towers but two types of feeding towers as verticals have not been mentioned. 1. The N4KG reverse feed ekevated radial system in a 1994 QST magazine. N4KG is a noted low ban; /archives//html/Towertalk/2006-12/msg00927.html (9,767 bytes)
379. Re: [TowerTalk] Wilson TT-45 (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Fri, 30 Mar 2007 11:50:53 -0500; Its the same as the US Tower MA-40. Dave K4JRB tubular tower) for 27 years now. I recently ordered a Step IR tribander with 30/40 meter dipole kit. The antenna weighs 49 lbs. I need to find out what; /archives//html/Towertalk/2007-03/msg00626.html (8,873 bytes)
380. Re: [TowerTalk] Radials vs vertical height (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Tue, 3 Apr 2007 01:59:23 -0400; Go to the W4RNL web page on antennas and read about half wave vertical dipoles elevated above ground and see his studies with and without radials. The half wave inverted L is another good elevated pe; /archives//html/Towertalk/2007-04/msg00055.html (8,690 bytes)

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