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41. [TowerTalk] DOD specs lookup--redux. (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Tue, 18 Apr 2006 19:35:31 +0000; Mssr's Lux & Hachadorian, please contact me off-line. I could find requested documents two days ago...now they're not found. Not sure what's changed. Looking for purchase specs on mast, ab621 a/g, an; /archives//html/Towertalk/2006-04/msg00327.html (6,591 bytes)
42. [TowerTalk] lightning bolt quads (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Thu, 20 Apr 2006 15:51:32 +0000; Like Jim, below, I also asked Mike at Lightning Bolt about the feed system, and got a similar response. However, there MUST be an interaction between the 10 and 20m elements. A 2 wave loop emits in e; /archives//html/Towertalk/2006-04/msg00369.html (8,683 bytes)
43. [TowerTalk] close spaced 4 square? (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Mon, 24 Apr 2006 08:53:03 +0000; Anybody have specific experience with an 1/8 wave spaced 4 square array on 80 or 160? I'm interested in feeding/matching issues, along with bandwidth and pattern performance. Dealing with site constr; /archives//html/Towertalk/2006-04/msg00402.html (7,296 bytes)
44. [TowerTalk] Is that really Rohn? (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Sat, 29 Apr 2006 16:23:59 +0000; I looked at the .jpg at the link: http://www.ab5k.net/images/LoranTowerLeg.jpg It appears that the 'inner' section is a tube welded inside the outer, not a swaged reduction, like Rohn. Additionally,; /archives//html/Towertalk/2006-04/msg00513.html (7,123 bytes)
45. [TowerTalk] Ground, Propane tanks & BLEVE (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Sun, 30 Apr 2006 12:04:32 +0000; First, thanks to those who raised this topic. I'm working a first-responder planning scenario dealing with a closely related topic, and was unaware of BLEVE studies. Second, I would contact the owner; /archives//html/Towertalk/2006-04/msg00540.html (7,404 bytes)
46. [TowerTalk] why not regalvanize? (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Mon, 01 May 2006 16:18:57 +0000; The answer to "why not 'just' regalvanize?" lies with the distance to the galvanizing outfit, and the galvanizing cost, plus the condition of the tower. It's not cheap to do, particularly if you have; /archives//html/Towertalk/2006-05/msg00019.html (7,273 bytes)
47. [TowerTalk] why not regalvanize? (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Mon, 01 May 2006 19:01:54 +0000; A number of folks have said "not true" in response to my observation that galvanizers won't touch a rusted structure. My observation was based on a sample of one--a galvanizing operation in south Jer; /archives//html/Towertalk/2006-05/msg00032.html (7,742 bytes)
48. [TowerTalk] rohn 25g guying (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Thu, 11 May 2006 16:45:43 +0000; Mike, You need to be aware of your local code, with respect to tower height and setback. It may not be possible to go to 70'. You will be better off with 25G than what you presently have, regardless; /archives//html/Towertalk/2006-05/msg00200.html (6,995 bytes)
49. [TowerTalk] SteppIR beauty? (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Thu, 11 May 2006 19:20:10 +0000; Since everyone else is wading in on this topic, I've got some dissonant thinking I'm going to dump in, on both sides: Frankly, putting a 4 el yagi in a suburban neighborhood ISN'T the most attractive; /archives//html/Towertalk/2006-05/msg00206.html (7,981 bytes)
50. [TowerTalk] 25g unguyed (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Sat, 13 May 2006 15:19:57 +0000; It's been a while since I looked at the Rohn commercial catalog/spec book. My recollection is that 30' above a bracket or guy, with 2 sq. ft. load was permissable, in a 70mph wind zone. Much of the c; /archives//html/Towertalk/2006-05/msg00248.html (6,918 bytes)
51. [TowerTalk] Best tower for salt environment (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Wed, 17 May 2006 15:07:10 +0000; Kelly, I suggest you speak with John Ackley, KP2A, and see what he's done with his towers. John has had both commercial and amateur structures on St. Thomas for many years. If it were me, I would avo; /archives//html/Towertalk/2006-05/msg00302.html (7,910 bytes)
52. Re: [TowerTalk] [WISPA FCC] OT??? High power 2.4 GHz rules change (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Sun, 21 May 2006 08:44:09 +0000; WISPA's desire for amateur feedback notwithstanding, this topic is inappropriate for this forum. Since it's already here, I will hazard a brief comment. I consult to the Dept. of Justice on communica; /archives//html/Towertalk/2006-05/msg00377.html (8,094 bytes)
53. [TowerTalk] KT34A and no tower (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Mon, 22 May 2006 04:49:35 +0000; Scott, KT34A is a good little antenna. Have had several. But you can't put 6' of mast above a rotor. You're asking for trouble, I'm afraid. Consult your rotor manual, but I'd bet that putting the bea; /archives//html/Towertalk/2006-05/msg00391.html (7,607 bytes)
54. [TowerTalk] Honda HF antennas (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Wed, 24 May 2006 17:39:46 +0000; Warren, That may have been my request for info, a few weeks back. What I ultimately got was very little information from the thread. Considering putting a valor antenna on a diamond k400 trunk lip mo; /archives//html/Towertalk/2006-05/msg00426.html (7,422 bytes)
55. [TowerTalk] Honda HF antennas (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Thu, 25 May 2006 01:52:03 +0000; Why is this on TowerTalk? 73 de Terry KK6T To which, I reply, Why is Timmie's recitation about the contest dinner and super suite here? Give me a freaking break! The answer is...this was Warren's ant; /archives//html/Towertalk/2006-05/msg00437.html (8,255 bytes)
56. [TowerTalk] tower painting (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Tue, 30 May 2006 16:25:50 +0000; Professional tower painters use painters gloves. one side feels like roller fluff. I think W2GD contracts that work, if anyone is looking for a pro job. n2ea jimjarvis@ieee.org ______________________; /archives//html/Towertalk/2006-05/msg00477.html (7,693 bytes)
57. [TowerTalk] phillystran for wire dipoles in trees (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Thu, 01 Jun 2006 00:01:51 +0000; Jim, I've run 160 and 80m carolina windoms in trees varying from 80 to 140' high, in Vermont and Maryland. I have them made from #12 PE insulated superflex wire, which has a breaking strength above 1; /archives//html/Towertalk/2006-05/msg00502.html (7,520 bytes)
58. [TowerTalk] Subject: Gap Titan radials or not? (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Sun, 11 Jun 2006 19:20:32 +0000; The presence of those radials is not likely to make an appreciable difference in performance. In my experience with GAP antennas, and I've had both a challenger and a voyager, they work well on all b; /archives//html/Towertalk/2006-06/msg00195.html (7,155 bytes)
59. [TowerTalk] bracketed 45G (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Thu, 15 Jun 2006 18:14:33 +0000; Danger, Will Robinson! You cannot rely upon anchors in a brick face to support a structure. You MUST through drill, into the structural framework, or into a backing plate which spreads the load into; /archives//html/Towertalk/2006-06/msg00326.html (7,970 bytes)
60. Re: [TowerTalk] bracketed 45G (score: 1): Author: "Jim Jarvis" <jimjarvis@verizon.net>; Date: Fri, 16 Jun 2006 01:01:43 +0000; fwd'd to reflector, because it's a relevant question: Gee, I wonder if you're thinking of the "older" Rohn brackets? Compared to the Rohn house brackets I bought a few decades ago for my Rohn 25 towe; /archives//html/Towertalk/2006-06/msg00338.html (9,233 bytes)

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