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1. Re: [TowerTalk] Tail Twister (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Thu, 19 Nov 2009 15:31:14 -0500; The rotor probably needs to be serviced. I suggest $200 is a fair price. 73 Dave K4JRB _______________________________________________ _______________________________________________ TowerTalk mailin; /archives//html/Towertalk/2009-11/msg00367.html (8,011 bytes)
2. Re: [TowerTalk] Vertical dipoles (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Wed, 18 Nov 2009 16:00:59 -0500; I have two Mor-Gain 80/40 antennas I have up as mostly vertical dipoles. I need to get the one that I call my NE vertical up a few more feet. Its vertical to the coax feed point then slopes at 50 deg; /archives//html/Towertalk/2009-11/msg00335.html (10,124 bytes)
3. Re: [TowerTalk] Verticals Above Beams (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Fri, 23 Oct 2009 16:14:37 -0400; Back in the mid 1960's I acquired a low band GE FM rig used on the Forest Industries frequencies above 29.7. All I had to do was change the crystal and it was on the air (60 watts as I recall). I had; /archives//html/Towertalk/2009-10/msg00415.html (9,977 bytes)
4. Re: [TowerTalk] Half-Square Guidance (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Sun, 11 Oct 2009 16:16:35 -0400; Dink, The articles on half squares and grounded half squares do have two identical antennas at right angles to each other. But as you mention having the towers could cause a problem although K4DLI ha; /archives//html/Towertalk/2009-10/msg00108.html (10,533 bytes)
5. Re: [TowerTalk] HB 3 ele 40m Beam (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Mon, 21 Sep 2009 14:00:03 -0400; Be careful. The antenna modeling program is great when you don't have interaction. I finally decided to build a 12 meter beam in 1992 and put together a W2PV 3 el that looked great that was to mount; /archives//html/Towertalk/2009-09/msg00354.html (9,152 bytes)
6. Re: [TowerTalk] Climbing the Antenna Mast (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Sat, 12 Sep 2009 19:05:48 -0400; I have an out of production W9IIX ladder mast that I have used since 1981. I climbed the steps 20 years ago myself (225 pounds) and Louie Lincoln has climbed them last year. They are welded onto the; /archives//html/Towertalk/2009-09/msg00180.html (8,661 bytes)
7. Re: [TowerTalk] K9AY performance expectations/help (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Sat, 29 Aug 2009 17:34:38 -0400; Gary K9AY helped me put up a single K9AY loop broadside NE/SW back in about 1995 or 6. I used one 8 foot ground rod already in the ground from an old grounded half loop I had up several years before.; /archives//html/Towertalk/2009-08/msg00574.html (10,206 bytes)
8. Re: [TowerTalk] Mosley Antennas on eBay (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Sun, 23 Aug 2009 17:36:22 -0400; Why break down the 40 meter add on separate from the TA-33? That is like the hams who sell the power supply as separate. Dave K4JRB _______________________________________________ ___________________; /archives//html/Towertalk/2009-08/msg00456.html (8,951 bytes)
9. [TowerTalk] Looking for W9INN coil (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Sat, 8 Aug 2009 16:55:35 -0400; I am looking for the W9INN resonactor coil for the W9INN MBC-068 Broad-Bander. This is a full size 1/4 wave 80 vertical or L with 160 shortened to about 115 feet. I lost the coil several years ago bu; /archives//html/Towertalk/2009-08/msg00139.html (7,177 bytes)
10. Re: [TowerTalk] Gem Quad Back in Production (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Sun, 26 Jul 2009 00:14:13 -0400; I bought the 4 element Gem Quad to go on my then brand new 71 foot crank up way back in 1969. I had some problems getting the SWR down on 10 and 15 but 20 tuned up fine. The problem I had was the top; /archives//html/Towertalk/2009-07/msg00513.html (9,554 bytes)
11. Re: [TowerTalk] rotor slippage device (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Wed, 8 Jul 2009 13:41:49 -0400; I have always used a bolt through the T2X top clamp into and through the mast. Has worked for me for the past 30 + years. This is shown in the T2X manual. Make sure its hard steel not a soft bolt. I; /archives//html/Towertalk/2009-07/msg00109.html (7,804 bytes)
12. Re: [TowerTalk] 160 - 80m "T" (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Sun, 24 May 2009 23:03:13 -0400; I had the MULTEE up twice between 1991 and 2002. Good on 160 but 3 to 4 S units below a dipole on 75 or 80. As configured (Its also in the ARRL Antenna book) it is tuned to just above 1900, I did not; /archives//html/Towertalk/2009-05/msg00451.html (9,731 bytes)
13. Re: [TowerTalk] [RFI] where to buy FairRite? (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Mon, 27 Apr 2009 20:58:59 -0400; Dan, N3OX is correct that a power rating on a balun does not mean much. I used to sell the Fritzel FD-4 Windom and I asked Mr. Fritzel (in Germany) about his ratings (he sold three 700W, 2K, and 5K).; /archives//html/Towertalk/2009-04/msg00782.html (8,206 bytes)
14. Re: [TowerTalk] Vertical in pond (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Wed, 18 Mar 2009 00:43:11 -0400; I looked at the PY3CEJ listing on QRZ and it only shows his station. I am told he has 200+ DXCC entities on 160 SSB. He submitted logs several years for the CQ WW 160 SSB. I work him in April and May; /archives//html/Towertalk/2009-03/msg00509.html (9,221 bytes)
15. Re: [TowerTalk] Vertical in pond (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Tue, 17 Mar 2009 15:25:12 -0400; I have worked PY3CEJ in Brazil several times on 160 and he almost always the loudest station in that part of the world. He has a big vertical in the middle of a small lake. Years ago when my club sta; /archives//html/Towertalk/2009-03/msg00482.html (8,730 bytes)
16. Re: [TowerTalk] Antenna Switch Needed (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Sat, 31 Jan 2009 18:45:24 -0500; Don't know if the HOFI remote switch is made in Europe any longer but this switch was sold in the USA by Electronic Switch in the mid 1990's. As I recall its useful to 500Mhz. I have used a Heath HD-; /archives//html/Towertalk/2009-01/msg00503.html (10,229 bytes)
17. Re: [TowerTalk] Cheap commercial tower in PA (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Tue, 16 Dec 2008 19:26:08 -0500; Pirod has been making commercial towers for years. As I recall they bought part of Tri-Ex at one time. They have an excellent web page with some specs and most of us would choke on the prices. A cran; /archives//html/Towertalk/2008-12/msg00480.html (7,378 bytes)
18. Re: [TowerTalk] 160M dipole idea for 160/80M? (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Wed, 10 Dec 2008 17:35:40 -0500; There are numerous ways to fashion a 160/80 dipole. Years ago Mor-gain made a half size 80 with a full size 40 down the middle (the 80 was wrapped around the 40). I have two of these up as vertical d; /archives//html/Towertalk/2008-12/msg00295.html (8,892 bytes)
19. Re: [TowerTalk] Guying a self-supporter (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Fri, 7 Nov 2008 13:28:44 -0500; Lou Tristao built a series of CTL towers for many years (also sold as Mosley towermasters) that were designed to be guyed towers. I remember that we used one of the 50 footers on Field day years ago.; /archives//html/Towertalk/2008-11/msg00177.html (10,990 bytes)
20. Re: [TowerTalk] Dorm room antenna? (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Mon, 27 Oct 2008 21:38:14 -0400; When I was at LSU in 1965 to 69 I found the same problem as at Clemson. First, the club station was a mess and it was in the EE building so until I found a ham in EE I could not get inside. There wer; /archives//html/Towertalk/2008-10/msg00553.html (9,625 bytes)

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