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41. [TowerTalk] SteppIR 40/30 (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Tue, 4 Nov 2003 19:23:36 -0000; I've pestered the boys at fluid motion enough on this topic. The present motor housing won't hold 33' of sprocketed metal strip. They'd have to retool for new molded housings. That's why the 40-6 Big; /archives//html/Towertalk/2003-11/msg00084.html (7,551 bytes)
42. [TowerTalk] Steptower? (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Tue, 4 Nov 2003 20:15:02 -0000; Barry took my jibe well....and came back with a good idea. My thought is to use an MA770, and remotely control it to set height. Somebody probably should copyright 'Stepptower', just in case. :) At t; /archives//html/Towertalk/2003-11/msg00087.html (7,968 bytes)
43. RE: [BULK] - RE: [TowerTalk] SteppIR/ HyGain/ MFJ (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Tue, 4 Nov 2003 21:28:18 -0000; Well, it IS true that once taped, they're stable in length, but they're not permanent. It was easy to remove the tape and collapse the things, when I took the antenna down, in VT. OTOH, you can get r; /archives//html/Towertalk/2003-11/msg00093.html (9,355 bytes)
44. [TowerTalk] SteppIR 40/30 etc. (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Wed, 5 Nov 2003 17:01:35 -0000; make more sense than a full sized one. More of us are fighting issues with turning radius and antenna appearance, as population density increases. While I grant you that many would like a full sized; /archives//html/Towertalk/2003-11/msg00131.html (8,233 bytes)
45. [TowerTalk] towers on roofs (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Thu, 6 Nov 2003 17:19:47 -0000; There were two similar questions on this topic, one had a hazer, the other did not. One man's opinion: Towers on roofs are a bad idea. It costs as much to support the weight and seal the roof as a co; /archives//html/Towertalk/2003-11/msg00169.html (7,712 bytes)
46. [TowerTalk] rohn 25g (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Sat, 8 Nov 2003 08:59:42 -0000; $140 per section for Rohn 25 is quite a good deal, for the seller, since it retails for $89 per section brand new.....-WB2WIK/6 Amen. Far as I know, the going rate is 35-50 a section, used, depending; /archives//html/Towertalk/2003-11/msg00248.html (6,737 bytes)
47. [TowerTalk] coax critters (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Mon, 10 Nov 2003 20:34:22 -0000; TT: In VT, I had a regular problem, like kq2m with critters. Squirrels and Chippies both nibbled, leaving tiny teeth marks. It was the critters whose jaws were 3-4" wide, leaving parallel marks like; /archives//html/Towertalk/2003-11/msg00322.html (7,695 bytes)
48. [TowerTalk] critters 'n cable (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Tue, 11 Nov 2003 00:19:41 -0000; Ok...so here's the solution. Make up a nice, solid DC supply, with low AC/RF noise on it... and couple it to the ground of your coax. About 1KV @ 20mA would do the trick, I think. You'll need to play; /archives//html/Towertalk/2003-11/msg00332.html (7,236 bytes)
49. [TowerTalk] stuck tower (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Sun, 16 Nov 2003 23:46:59 -0000; Again, please...what kind of tower was this? MA550, or lattice crankup? Am contemplating an ma770 for Spring, and while climbing it is out of the question, as it's a pole... the issue of bending and; /archives//html/Towertalk/2003-11/msg00443.html (7,466 bytes)
50. [TowerTalk] RE: TowerTalk Digest, Vol 11, Issue 71 (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Thu, 27 Nov 2003 20:06:07 -0000; Can't believe you talked with Gerald and they took that position. Wierd~! They're good guys. Jim/n2ea --Original Message-- From: towertalk-bounces@contesting.com [mailto:towertalk-bounces@contesting.; /archives//html/Towertalk/2003-11/msg00614.html (9,331 bytes)
51. [TowerTalk] high power tuners (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Mon, 1 Dec 2003 14:01:59 -0000; FWIW, at my MD site, I wanted to have a general purpose utility antenna. Aesthetics played a part. Put up an 80m dipole fed with open wire line....perhaps 100' of it. Bought a Tentec 238B tuner. Nice; /archives//html/Towertalk/2003-12/msg00012.html (8,198 bytes)
52. [TowerTalk] 160m antennas (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Mon, 1 Dec 2003 21:48:18 -0000; I commented off-reflector...but this is getting interesting, so forgive me for wading in, if this is obvious to you: 1) Make an inverted Ell using the tower. You can't decouple it..it'll have stray c; /archives//html/Towertalk/2003-12/msg00050.html (8,393 bytes)
53. [TowerTalk] cables on guywires? (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Sat, 6 Dec 2003 11:48:12 -0000; Recent thread on guying distance contained a comment about lower guys having the weight of cables on them. Am I the only one who sees this as bad practice? feedlines need to run down the tower, and b; /archives//html/Towertalk/2003-12/msg00151.html (7,365 bytes)
54. [TowerTalk] fresh water grounds (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Tue, 9 Dec 2003 23:20:12 -0000; " I live 200 feet out on a point = in a very large lake and 200 feet of coax would get me to the end of the = 40 foot dock. Part of the dock is covered with a metal roof which might = cause some prob; /archives//html/Towertalk/2003-12/msg00251.html (8,356 bytes)
55. [TowerTalk] 90mph in NV (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Fri, 12 Dec 2003 17:23:10 -0000; I observed privately that 90mph, if imposed on the extended MA-40 structure, would not be sustainable, with any useful antenna onboard. It's rated for 50mph, extended. The crux of the argument to be; /archives//html/Towertalk/2003-12/msg00337.html (7,434 bytes)
56. [TowerTalk] rohn 45G (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Sat, 13 Dec 2003 16:07:56 -0000; One of the problems with Rohn's operations was that they started producing tower sections which were not plumb. I bought an 8' tapered top section, where they simply got the top tube crooked. Then, t; /archives//html/Towertalk/2003-12/msg00370.html (8,404 bytes)
57. [TowerTalk] analysis request (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Sun, 14 Dec 2003 21:34:25 -0000; I'd like to come up with a model for the RF choke system I'm using on one of my wire antennas. Coax comes vertically to ground...six type 71 clamp-ons, .75 inch long are placed over it. Then, coax sh; /archives//html/Towertalk/2003-12/msg00419.html (7,788 bytes)
58. [TowerTalk] Rohn Clones (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Tue, 16 Dec 2003 19:20:18 -0000; I was on the ArraySolutions, WX0B site today, looking for k9ay boxes, and discovered that Jay has a line of Rohn knockoffs. They're a reputable tower company...I would expect quality to be the same a; /archives//html/Towertalk/2003-12/msg00469.html (7,049 bytes)
59. [TowerTalk] beverages (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Thu, 18 Dec 2003 14:53:04 -0000; Sam...(all)... Mauri's right (below), a 6m high beverage is higher than optimal... if nothing else, matching it will be more difficult, because of the resulting high impedance. On the other hand, as; /archives//html/Towertalk/2003-12/msg00511.html (8,053 bytes)
60. [TowerTalk] radials redux (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Fri, 19 Dec 2003 13:13:23 -0000; The early work on ground systems under vertical antennas was performed at AT&T Bell Labs, in the late 30's. They had a site in Sussex County where much of it was done. Some also happened at the Whipp; /archives//html/Towertalk/2003-12/msg00557.html (7,324 bytes)

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