- 261. [TowerTalk] Ground Planes vs. ground mounted verticals (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Sun, 12 Jun 2005 12:39:53 -0400
- -0- I have often wondered whether elevating a vertical has any advantage over a vertical on the ground with a good radial system. "Good being defined as 40 or more radials, 0.2 wavelength or longer a
- /archives//html/Towertalk/2005-06/msg00297.html (8,368 bytes)
- 262. [TowerTalk] Getting ground rods OUT (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Sun, 12 Jun 2005 13:03:27 -0400
- As we work on relocation, I have to strike the last vestiges of my antenna system. There are two 8' ground rods, each sticking out by something less than a foot. I'd just pound 'em further in, but th
- /archives//html/Towertalk/2005-06/msg00299.html (8,246 bytes)
- 263. [TowerTalk] ground rod extraction (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Sun, 12 Jun 2005 14:19:24 -0400
- Thanks to all for the feedback. Won't acknowledge the many individual suggestions. conclusion: 1) a pry-bar against the clamp, using brick or block as fulcrum. If it comes up easily, great. if not, 2
- /archives//html/Towertalk/2005-06/msg00311.html (7,301 bytes)
- 264. [TowerTalk] gnd rod extraction--coda (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Sun, 12 Jun 2005 20:45:27 -0400
- Seems like dropping heavy chain over the rod will allow you to get a friction grip. Worth trying, and I may. Tractor and other jacking methods noted, with thanks. N2EA jimjarvis@ieee.org ____________
- /archives//html/Towertalk/2005-06/msg00324.html (7,612 bytes)
- 265. [TowerTalk] elevated verticals....radial config. (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Sun, 12 Jun 2005 20:52:02 -0400
- If you have a limited number of radials, as in 2, you will definitely have favored directions. In fact, even with 4 or more, you have to consider that the mean vertical angle of the lowest lobe will
- /archives//html/Towertalk/2005-06/msg00325.html (8,390 bytes)
- 266. [TowerTalk] ab577 vibration (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Mon, 20 Jun 2005 21:35:57 -0400
- I put my AB577 up today at 45' with a 5 element 15meter beam on top. Ive noticed it vibrating in the wind (it did this when I had it up without the beam as well). Some of the top sections of mast sha
- /archives//html/Towertalk/2005-06/msg00478.html (7,608 bytes)
- 267. [TowerTalk] Hang wires.... (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Tue, 21 Jun 2005 23:16:30 -0400
- Are you nuts, Chet? Do you realize how hard it is to find a decent house and property out here in the SF Bay area where you can basically put up any kind of tower/antenna system you want as long as y
- /archives//html/Towertalk/2005-06/msg00520.html (7,683 bytes)
- 268. [TowerTalk] dipole in trees--k3ku's dilemma (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Tue, 28 Jun 2005 04:04:37 -0400
- I've pulled the ends of the dipole as far as I can into the trees (maybe too far), but it still sags quite a bit -- 5 to 10 feet, by eye. Some of the sag is probably from the weight of the antenna wi
- /archives//html/Towertalk/2005-06/msg00619.html (8,435 bytes)
- 269. [TowerTalk] San Jose zoning re: antennas (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Tue, 28 Jun 2005 04:26:50 -0400
- Although I've worked for two San Jose based companies, and been there scads of times, I have only a loose feel for the building climate. Have you considered approaching the city planner? He's usually
- /archives//html/Towertalk/2005-06/msg00620.html (8,390 bytes)
- 270. [TowerTalk] wires in trees (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Tue, 28 Jun 2005 12:06:49 -0400
- I agree that it is better to keep the wire out of the tree, if you can. Pulling it vertical for some distance is a viable technique. On the other hand, if it proves unworkable, or results in too much
- /archives//html/Towertalk/2005-06/msg00637.html (7,954 bytes)
- 271. [TowerTalk] unguyed rohn towers (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Sun, 3 Jul 2005 18:34:00 -0400
- In a message dated 7/3/05 3:22:21 AM Greenwich Standard Time, ne0p@lcisp.com writes: I am in the planning stages for getting a tower up in the next couple of years (hopefully) and am hoping to get so
- /archives//html/Towertalk/2005-07/msg00031.html (9,460 bytes)
- 272. [TowerTalk] rope recommendations? (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Mon, 4 Jul 2005 12:33:51 -0400
- The squirrel discussion reminded me that I need to buy another 500' spool of rope to hoist wire antennas. The last one I bought came from rope-rope, no longer in business. It's .250" braided dacron,
- /archives//html/Towertalk/2005-07/msg00041.html (7,770 bytes)
- 273. [TowerTalk] Rope haliards (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Tue, 5 Jul 2005 15:20:22 -0400
- Folks, I have decided to try the mil-spec 3/16" dacron braid which Radio Works is selling. This is on a bug-out antenna, here in MD, a wire which will be low-profile, and hopefully quick-deploy at th
- /archives//html/Towertalk/2005-07/msg00082.html (7,564 bytes)
- 274. [TowerTalk] rope...redux (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Tue, 5 Jul 2005 16:24:31 -0400
- As I was preparing to place the order for 3/16" mil spec dacron, I discovered smaller... .125" kevlar with dacron jacket. There is also .075" diameter of the same stuff... both with the same tensile
- /archives//html/Towertalk/2005-07/msg00087.html (7,863 bytes)
- 275. [TowerTalk] Rigging Dipoles, choosing coax, and defying age. (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Thu, 7 Jul 2005 17:18:04 -0400
- OK...I don't get it. First, I've been at this since 1958...I'm 60...and NOT into giving up on anything. Probably a failing, but I expect to crash and burn, rather than fizzle. What is it they say, "Y
- /archives//html/Towertalk/2005-07/msg00156.html (8,021 bytes)
- 276. [TowerTalk] ASL vs HAAT (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Fri, 8 Jul 2005 14:11:59 -0400
- As Dave Robbins pointed out, topo maps indicate altitude ASL. So do aeronautical charts. It's easier to talk about the printed numbers, than it is to calculate height above average terrain...which al
- /archives//html/Towertalk/2005-07/msg00185.html (7,487 bytes)
- 277. [TowerTalk] reinforcing Tennadyne elements (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Fri, 8 Jul 2005 18:55:53 -0400
- The RF will never know you stiffened up the inner sections of the elements... it flows close to the surface, after all. I'm amazed at your comment, though. I had 2" of radial ice and 70kt winds in VT
- /archives//html/Towertalk/2005-07/msg00201.html (7,069 bytes)
- 278. [TowerTalk] The bad news (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Wed, 20 Jul 2005 23:23:27 -0400
- Well folks....there's bad news, and there's not so bad news. The BAD news is...my new house in suburbia has trees in places that make towers and beams a shoehorn problem. I have no idea how to work a
- /archives//html/Towertalk/2005-07/msg00490.html (9,148 bytes)
- 279. Re: [TowerTalk] The bad news (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Thu, 21 Jul 2005 08:46:21 -0400
- Don, As I said privately to Tom, we're going to have to agree to disagree, on both my major points. There have been dumbasses on the air for as long as I've been a ham. They passed the code tests. I
- /archives//html/Towertalk/2005-07/msg00507.html (13,257 bytes)
- 280. [TowerTalk] gametracker refill? (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Fri, 22 Jul 2005 12:23:51 -0400
- Anybody happen to have, or know a source for, refills for the gametracker 2500 bow hunting arrow tracker? I use it to pull up antenna support line. Ran out, part way through a project, and my normal
- /archives//html/Towertalk/2005-07/msg00561.html (6,998 bytes)
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