- 1. [TowerTalk] End feeding a half-wave vetical (score: 1)
- Author: "Tim Cotton, N4UM" <N4UM@bellsouth.net>
- Date: Wed, 1 Jun 2005 18:15:31 -0400
- I have a 30 meter half wave vertical mounted on a dock piling over salt water. I feed it with an old Dentron "Super Tuner" right at the base. The tuner is housed in a Rubbermaid storage box. On long
- /archives//html/Towertalk/2005-06/msg00065.html (7,883 bytes)
- 2. [TowerTalk] HOW MUCH MAST NEEDED IN TOWER (score: 1)
- Author: "Tim Cotton, N4UM" <N4UM@bellsouth.net>
- Date: Sun, 28 Aug 2005 20:40:12 -0400
- Jose: Your question is hard to answer since you don't state the yield strength of the steel used in your mast and you don't indicate how the 20 square feet of antenna will be distributed along the ma
- /archives//html/Towertalk/2005-08/msg00557.html (8,530 bytes)
- 3. [TowerTalk] Weed Whacker Line? (score: 1)
- Author: "Tim Cotton, N4UM" <N4UM@bellsouth.net>
- Date: Tue, 13 Sep 2005 09:26:28 -0400
- I use 100Kg (220lb) test woven Dacron fishing line. It can be bought in 1000 foot spools at fishing tackle shops and comes in several colors. It holds up very well to UV, remains flexible, stretches
- /archives//html/Towertalk/2005-09/msg00383.html (7,307 bytes)
- 4. [TowerTalk] > Cement PSI (score: 1)
- Author: "Tim Cotton, N4UM" <N4UM@bellsouth.net>
- Date: Sat, 17 Sep 2005 21:13:47 -0400
- Most of the load on your concrete tower base IS COMPRESSION so I would think the rated compressability of the concrete in your foundation would be very important. Tim, N4UM __________________________
- /archives//html/Towertalk/2005-09/msg00591.html (7,015 bytes)
- 5. [TowerTalk] Tower winch information wanted (score: 1)
- Author: "Tim Cotton, N4UM" <N4UM@bellsouth.net>
- Date: Fri, 23 Sep 2005 23:13:58 -0400
- Check out www.grainger.com. They have a number of relatively inexpensive worm-gear winches. Tim, N4UM _______________________________________________ See: http://www.mscomputer.com for "Self Supporti
- /archives//html/Towertalk/2005-09/msg00764.html (6,688 bytes)
- 6. [TowerTalk] Downforce calculation (score: 1)
- Author: "Tim Cotton, N4UM" <N4UM@bellsouth.net>
- Date: Sun, 12 Feb 2006 10:20:17 -0500
- I'm certainly not an engineer or any kind of expert on such calculations so take what I say with a very very large grain of salt and realize that these are very very crude calculations based upon a n
- /archives//html/Towertalk/2006-02/msg00166.html (9,692 bytes)
- 7. [TowerTalk] Inverted L for 160 meters (score: 1)
- Author: "Tim Cotton, N4UM" <N4UM@bellsouth.net>
- Date: Wed, 17 Oct 2007 19:17:29 -0400
- Tom. The 165-175 foot length (longer than a quarter wave) raises the radiation resistance of the antenna to somewhere close to 50 ohms but, at the same time increases the inductive reactance. The cap
- /archives//html/Towertalk/2007-10/msg00401.html (9,031 bytes)
- 8. [TowerTalk] [NitPickTalk] Inverted L for 160 Meters (score: 1)
- Author: "Tim Cotton, N4UM" <N4UM@bellsouth.net>
- Date: Sun, 21 Oct 2007 20:50:52 -0400
- Brett: I mentioned nothing about radials in my post to Tom. I guess you assumed I was talking about radials instead of radiators. perhaps I should have made that more clear. In fact, I use NO radials
- /archives//html/Towertalk/2007-10/msg00524.html (8,408 bytes)
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