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References: [ +from:nielsen@oz.net: 172 ]

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61. [TowerTalk] 2 Element Gem Quad (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Mon, 20 Aug 2001 21:01:52 -0700; Actually if you click on the "2 ELEMENT image" link, it says prices start at $339.95 USD. Presumably this is for the three-band version and the five-band version is a bit more. I suspect that the com; /archives//html/Towertalk/2001-08/msg00461.html (7,422 bytes)
62. [TowerTalk] Tri-Band and Vertical Seperation (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Mon, 20 Aug 2001 21:09:17 -0700; Since it would be cross-polarized to the A3S, there should be minimal interaction (assuming you don't add any radials). I also doubt that the performance would be very good, compared to the A3S. Bob,; /archives//html/Towertalk/2001-08/msg00462.html (7,874 bytes)
63. [TowerTalk] Improving connectors (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Thu, 23 Aug 2001 18:27:21 -0700; I have used Caig's Cramolin R5 aerosol for applications where ordinary contact cleaner did nothing at all. Great stuff, but they no longer make it. DeOxit and R5 Power Booster are the replacements an; /archives//html/Towertalk/2001-08/msg00561.html (9,005 bytes)
64. [TowerTalk] Rohn Tilt-over Questions (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Wed, 29 Aug 2001 19:35:05 -0700; I have a Rohn catalog I purchased last month from Champion Radio (presumably the current version) which has the fold-over information. For a 48-foot 25G fold-over, it shows the safe load at the apex; /archives//html/Towertalk/2001-08/msg00667.html (8,029 bytes)
65. [TowerTalk] T2X Overhaul (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Thu, 30 Aug 2001 21:46:18 -0700; I suspect that the starting capacitor needs replacing (a fairly common occurance). Bob, N7XY List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems, Trylon Titan towers, coax, hardline; /archives//html/Towertalk/2001-08/msg00719.html (7,909 bytes)
66. [TowerTalk] Antenna Modeling Question Update (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Tue, 24 Jul 2001 09:33:18 -0700; This is a complicated enough combination that the demo version of EZNEC, which only allows for 20 segments, won't be able to model it very well at all. The full version accomodates 500 segments. For; /archives//html/Towertalk/2001-07/msg00459.html (8,449 bytes)
67. [TowerTalk] Coax??? (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Wed, 13 Jun 2001 08:58:26 -0700; I don't know about "ARG-17A/U", but RG-17A/U is flexible coax with an O.D. of 17.3 mm (0.681 in.). You could sort of look at it as the next size up from RG-8/U. If you can find a copy of MIL-C-17, th; /archives//html/Towertalk/2001-06/msg00286.html (7,599 bytes)
68. [TowerTalk] Coax??? (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Wed, 13 Jun 2001 09:35:47 -0700; I double-checked and that is the diameter over the dielectric. The O.D. wasn't listed on the sheet I found, but ~.75 or so sounds about right. I have seen it before and recall it is pretty big stuff; /archives//html/Towertalk/2001-06/msg00292.html (8,084 bytes)
69. [TowerTalk] Ginpole for 20 foot sections (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Wed, 13 Jun 2001 13:31:13 -0700; Thanks for remembering that classic, Ward. I have a copy of it around somewhere, but won't show it to my XYL until AFTER I get a tower and antenna installed! If we start including friction, then we a; /archives//html/Towertalk/2001-06/msg00324.html (10,576 bytes)
70. [TowerTalk] DB-304 Antennas and 3 degrees down tilt (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Wed, 13 Jun 2001 14:36:41 -0700; Paul, The half-power beamwidth of a DB-304 is 16 degrees according to the data sheet. If I understand you correctly, this means you wish to achieve (16/2) + 3 = 11 degrees of downtilt. The data sheet; /archives//html/Towertalk/2001-06/msg00330.html (9,726 bytes)
71. [TowerTalk] 2m 3L Quad (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Tue, 19 Jun 2001 22:17:00 -0700; For horizontal polaration on a diamond quad, the feed to the DE should be at the end of one of the vertical spreaders. If the reflector and director are assymetrical (e.g., there is a stub at one cor; /archives//html/Towertalk/2001-06/msg00473.html (7,984 bytes)
72. [TowerTalk] Removing Oil from a Motor (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Thu, 21 Jun 2001 08:41:24 -0700; Back in the 1960's a co-worker tried using MEK to clean a grease spot off his tie. The spot came off fine, but then the MEK started to wick its way up the tie, disolving everything in its path.... Bo; /archives//html/Towertalk/2001-06/msg00506.html (9,182 bytes)
73. [TowerTalk] Removing Oil from a Motor (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Thu, 21 Jun 2001 11:28:31 -0700; As I recall, he did start to panic a bit before somebody grabbed a pair of scissors. Too bad it was in the days before video cameras. (in case anyone thinks this is off-topic, although he wasn't a ha; /archives//html/Towertalk/2001-06/msg00510.html (10,688 bytes)
74. [TowerTalk] log periodic antennas (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Fri, 22 Jun 2001 18:26:19 -0700; Conventional wisdom says that the longer the boom is and the more elements the array has, the higher will be the gain. However in the case of a LPDA, only a few of the elements (the active region whe; /archives//html/Towertalk/2001-06/msg00531.html (9,021 bytes)
75. [TowerTalk] Hygain TH11 (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Tue, 29 May 2001 14:29:11 -0700; That is only in the QST advertisements. The ARRL has a very strict policy relative to claims (especially antenna gain) in advertisements as a result of some rather inventive ways in which some manufa; /archives//html/Towertalk/2001-05/msg00615.html (8,235 bytes)
76. [TowerTalk] Anchor placement - Rohn 45G (score: 1): Author: nielsen@oz.net (Bob Nielsen); Date: Wed, 30 May 2001 18:53:34 -0700; Jerry, I'm not a structural engineer, but here are a few observations. Notice that in all cases Rohn specifies the top guy at 9' below the top of the tower. I don't know if they mean a 10' section or; /archives//html/Towertalk/2001-05/msg00636.html (9,269 bytes)
77. Re: [TowerTalk] N connectors (score: 1): Author: Bob Nielsen <nielsen@oz.net>; Date: Mon, 8 Sep 2003 08:00:11 -0700; I've probably attached a few hundred N connectors and about 40 years ago learned an easy way to inspect the installation. Push hard on the end of the connector with the tip of a finger. The ring and; /archives//html/Towertalk/2003-09/msg00233.html (10,584 bytes)
78. Re: [TowerTalk] RFI resolution (score: 1): Author: Bob Nielsen <nielsen@oz.net>; Date: Sat, 27 Sep 2003 19:41:16 -0700; To keep the discussion relevant to this list, it sounds like it is related to the field strength, so you obviously need a taller tower to put her house further away from the beam (and further down th; /archives//html/Towertalk/2003-09/msg00641.html (12,430 bytes)
79. Re: [TowerTalk] AV-640 Vertical (score: 1): Author: Bob Nielsen <nielsen@oz.net>; Date: Thu, 13 Nov 2003 23:10:35 -0800; The AV-640 is quite similar to the Cushcraft R8 (which fared quite well in the K7LXC/N0AX report on verticals), except that it uses the coils and capacity hats instead of traps. As I am physically no; /archives//html/Towertalk/2003-11/msg00402.html (9,581 bytes)
80. Re: [BULK] - [TowerTalk] Crank-up won't crank (score: 1): Author: Bob Nielsen <nielsen@oz.net>; Date: Fri, 14 Nov 2003 18:15:41 -0800; If is still stuck, is there any noticeable "bow" in the tower? I had experience with a 40 foot tubular tower in So. Calif. which was mounted ~60 feet above ground on a platform above the roof of a bu; /archives//html/Towertalk/2003-11/msg00418.html (9,459 bytes)

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