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References: [ +from:k1ttt@berkshire.net: 90 ]

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61. [TowerTalk] 4 square or yagi ?? (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Wed, 22 Oct 1997 23:21:23 +0000; i haven't made that specific comparison, but i have a 2 element wire yagi at 150' on about a 50' boom. and i have a wire 4-square with the feed points raised about 10'. I wouldn't get rid of either o; /archives//html/Towertalk/1997-10/msg00624.html (8,428 bytes)
62. [TowerTalk] Yagi Rain Static Observation (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Mon, 27 Oct 1997 23:34:40 +0000; when lightning gets that close we close down everything! much safer that way. -- David Robbins K1TTT (ex KY1H) k1ttt@berkshire.net or robbins@berkshire.net http://www.berkshire.net/~robbins/k1ttt.htm; /archives//html/Towertalk/1997-10/msg00728.html (9,232 bytes)
63. [TowerTalk] trees as guy anchors (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Tue, 23 Sep 1997 23:21:06 +0000; actually some good grades of twisted (not braided) type in the larger diameters holds up reasonably well for a couple years, i left a field day tower up for a year with 3/4" poly guys. they were kind; /archives//html/Towertalk/1997-09/msg00623.html (10,181 bytes)
64. [TowerTalk] Re: Are "Ufer" grounding, and more on porcupines. (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Tue, 23 Sep 1997 23:46:43 +0000; an article in the proceedings from a recent uhv transmission line conference in montreal would seem to lend more support to these discussions. granted that the bases are bigger, but so are the towers; /archives//html/Towertalk/1997-09/msg00626.html (11,891 bytes)
65. [TowerTalk] Re: coax as balanced line (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Sat, 02 Aug 1997 11:55:15 +0000; no, power is i-squared*Z0 so 1/2 the power is .707 times the current. again, .707 of the original current .707 squared is .5 add the two .5's and you have the same loss. look at a simpler case: 1. yo; /archives//html/Towertalk/1997-08/msg00033.html (10,465 bytes)
66. [TowerTalk] Summary: thoughts on the Yaesu G-1000SDX (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Tue, 05 Aug 1997 22:58:06 +0000; of course, doesn't everyone? with 3 yeasu rotors here i picked up a bunch of spare metric stuff just in case i dropped something. -- David Robbins K1TTT (ex KY1H) k1ttt@berkshire.net or robbins@berks; /archives//html/Towertalk/1997-08/msg00200.html (8,340 bytes)
67. [TowerTalk] 75 ohm feedline (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Wed, 09 Jul 1997 00:25:52 +0000; just another thing to throw a monkey wrench in the works... do some rough calculations: compare wavelengths at the two busiest frequencies on 80m in contests 300/3.5mhz = 85.7m 300/3.8mhz = 78.9m dif; /archives//html/Towertalk/1997-07/msg00320.html (9,170 bytes)
68. [TowerTalk] WB0W gin-pole, need help (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Sun, 13 Jul 1997 10:57:25 +0000; i prefer to have it about 90 degrees from pointing straight out from the tower. but this is using a rohn gin pole, it may be easier at other angles depending on how much of the pulley is exposed on y; /archives//html/Towertalk/1997-07/msg00443.html (9,360 bytes)
69. [TowerTalk] Curing Concrete (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Thu, 31 Jul 1997 00:03:18 +0000; watch out! you don't want concrete to 'dry'. indeed you want to keep it wet to get it to 'cure' (a chemical reaction that needs water) and reach its final strength. -- David Robbins K1TTT (ex KY1H) k; /archives//html/Towertalk/1997-07/msg00871.html (7,668 bytes)
70. [TowerTalk] WX & Internet experts? (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Thu, 31 Jul 1997 00:14:42 +0000; the data you are looking for comes from: http://www.glatmos.com/ http://www.glatmos.com/nldn/nldn.html however, it is not available free on the web yet that i can find. it is available via satellite; /archives//html/Towertalk/1997-07/msg00874.html (8,807 bytes)
71. [TowerTalk] Tension guage (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Fri, 20 Jun 1997 00:17:10 +0000; http://www.berkshire.net/~robbins/technote/guywire.html#loos has most of the last discussion on the loos gauge, includeing ordering and price info. -- David Robbins K1TTT (ex KY1H) k1ttt@berkshire.ne; /archives//html/Towertalk/1997-06/msg00641.html (7,821 bytes)
72. [TowerTalk] Cleaning aluminum (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Sun, 22 Jun 1997 13:39:52 +0000; actually he was wrong. there is always one person that remembers who came in second... and if they want to stay on top the person who came in first will remember also! -- David Robbins K1TTT (ex KY1H; /archives//html/Towertalk/1997-06/msg00722.html (8,205 bytes)
73. [TowerTalk] Re:TDR (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Wed, 25 Jun 1997 23:32:48 +0000; i use this method on my Beverage antennas, it has helped several times to locate problems in the transformers vs the wires.(on4un 2-wire bi-directional design with 2 transformers on a pair of wires); /archives//html/Towertalk/1997-06/msg00882.html (8,821 bytes)
74. [TowerTalk] DCU-1 (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Fri, 02 May 1997 23:46:26 +0000; the computer controller that i built from an off the shelf micro controller board for the yaesu series of gxxxx-sdx boxes could be easily adapted to control any rotor that has an analog indicator sys; /archives//html/Towertalk/1997-05/msg00066.html (8,991 bytes)
75. [TowerTalk] More serial ports (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Fri, 09 May 1997 23:25:45 +0000; check out: http://www.digiboard.com/prodprofiles/profiles/xe/xe_specs.html i have been using one of their old digiboard 8 port cards here for years. at one point i had 2 of them to give me 18 serial; /archives//html/Towertalk/1997-05/msg00285.html (7,992 bytes)
76. [TowerTalk] 70 ft vertical tubing for 80m (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Thu, 15 May 1997 23:33:47 +0000; i would recommend about 30' of tower with a pulley at the top used as a crane. but be sure that you spread out the lifting force or you are liable to kink the tubing where you pick it up. its fairly; /archives//html/Towertalk/1997-05/msg00392.html (8,529 bytes)
77. [TowerTalk] Re: Wallpaper woes (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Sun, 25 May 1997 12:13:18 +0000; another option that readers can use is to override the wallpaper with their browser options. with netscape you can tell it to use your own backround colors which overrides any wallpaper the page may; /archives//html/Towertalk/1997-05/msg00577.html (8,246 bytes)
78. [Fwd: [TowerTalk] All-stainless clamps] (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Wed, 28 May 1997 23:46:06 +0000; This is a multi-part message in MIME format. --2F0C41B83D052AF5FEFE55F9 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit -- David Robbins K1TTT (ex KY1H) k1ttt@berkshire.net; /archives//html/Towertalk/1997-05/msg00692.html (8,424 bytes)
79. [TowerTalk] Stubs (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Sun, 06 Apr 1997 01:26:16 +0000; i tried to reply to your mail, and it bounced... so maybe you have mail problem. check out http://www.berkshire.net/~robbins/technote/techref.html#filters particularly the articles on pairs of stubs; /archives//html/Towertalk/1997-04/msg00162.html (7,264 bytes)
80. [TowerTalk] Room For Shorty Above TH11 (score: 1): Author: k1ttt@berkshire.net (David Robbins); Date: Sun, 06 Apr 1997 11:31:40 +0000; negative! try this thought experiment. take two beams, one with supports up and one with them down. add extra weight at the end of each boom (ala ice). now, as long as there is no side force (ala win; /archives//html/Towertalk/1997-04/msg00170.html (10,034 bytes)

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