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61. [TowerTalk] Rohn tower assembly (score: 1): Author: broz@csn.net (John Brosnahan); Date: Sun, 13 Jul 1997 08:06:04 -0600 (MDT); Why would one waste time with knots when a $4.50 carribeaner will just snap into place. Saves ground time and more importantly it saves tower time. Tie the 'beaner on once with a good knot and never; /archives//html/Towertalk/1997-07/msg00447.html (7,898 bytes)
62. [TowerTalk] Re: [Tower Talk] Home Owner's Insurance (score: 1): Author: broz@csn.net (John Brosnahan); Date: Wed, 23 Jul 1997 18:21:17 -0600 (MDT); ALL of my antennas and towers are ATTACHED to the house. (By coaxial cable and control lines!) John W0UN -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.c; /archives//html/Towertalk/1997-07/msg00708.html (7,241 bytes)
63. [TowerTalk] Light up those towers. (score: 1): Author: broz@csn.net (John Brosnahan); Date: Thu, 12 Jun 1997 23:16:53 -0600 (MDT); I spent a few YEARS negotiating with the FAA on my towers and they said something to the effect that the actual height for which lighting is required is a variable. If someone wanted to put up a 300f; /archives//html/Towertalk/1997-06/msg00397.html (8,334 bytes)
64. [TowerTalk] Lube a Rohn Thrust Bearing? (score: 1): Author: broz@csn.net (John Brosnahan); Date: Sat, 14 Jun 1997 06:16:38 -0600 (MDT); Done it many times--not a problem. Just a few minutes work. You figured it out. Need to remove the set screw and let the little balls fall out the hole before you can pull the two halves apart. It is; /archives//html/Towertalk/1997-06/msg00433.html (9,716 bytes)
65. [TowerTalk] yagi comments (score: 1): Author: broz@csn.net (John Brosnahan); Date: Sat, 14 Jun 1997 07:31:30 -0600 (MDT); My 8 over 8 over 8 over 8 on 10M got moonbounce echos about 80% of the time with the best S/N of 15 dB. The 7 over 7 over 7 over 7 on 15M got moonbounce echoes about 40% of the time, but fairly margi; /archives//html/Towertalk/1997-06/msg00439.html (9,614 bytes)
66. [TowerTalk] Lube a Rohn Thrust Bearing? (score: 1): Author: broz@csn.net (John Brosnahan); Date: Sat, 14 Jun 1997 07:31:30 -0600 (MDT); Hi, Chuck--been a while since I said hello. I usually let my rotators take the weight and use the UHMW bearing for side thrust only. But if you want the bearing to take the weight as well, then it i; /archives//html/Towertalk/1997-06/msg00440.html (8,965 bytes)
67. [TowerTalk] Lube a Rohn Thrust Bearing? (score: 1): Author: broz@csn.net (John Brosnahan); Date: Sat, 14 Jun 1997 08:09:13 -0600 (MDT); Rod, guess I agree that it probably doesn't matter. I have run them both ways, lubed and dry. Aluminum tends to gall and the lubed ones seemed to have better looking races after a lot of years. IF YO; /archives//html/Towertalk/1997-06/msg00444.html (8,518 bytes)
68. [TowerTalk] Gin Pole rope (score: 1): Author: broz@csn.net (John Brosnahan); Date: Sat, 14 Jun 1997 10:16:40 -0600 (MDT); Bill, Here are some of the tradeoffs. 1) Standard hemp rope. Not as strong for the weight, but cheap. Lifetime is not that great. I wouldn't trust my life to it. Typically of laid construction so add; /archives//html/Towertalk/1997-06/msg00449.html (9,690 bytes)
69. [TowerTalk] Gin Pole rope (score: 1): Author: broz@csn.net (John Brosnahan); Date: Mon, 16 Jun 1997 09:40:24 -0600 (MDT); I have received a few inquiries about sources for the Dacron "Stable Braid" rope I recommended in my note on tower rigging. The original manufacturer, Sampson, has been bought out by American Rope co; /archives//html/Towertalk/1997-06/msg00508.html (8,582 bytes)
70. [TowerTalk] AEA cable mate (score: 1): Author: broz@csn.net (John Brosnahan); Date: Sun, 22 Jun 1997 21:08:04 -0600 (MDT); Steve, apples and oranges. He was asking about the AEA TDR not the AEA antenna bridge--and all of the bridges with internal oscillators and broad band detectors are susceptible to BC interference. Yo; /archives//html/Towertalk/1997-06/msg00737.html (8,250 bytes)
71. [TowerTalk] Tower Complaints & backhoes (score: 1): Author: broz@csn.net (John Brosnahan); Date: Mon, 23 Jun 1997 19:38:49 -0600 (MDT); A real artist of a backhoe operator can dig great holes, but most are in a big hurry--thinking more is better and do it the easy way. Which is why I trade my digging labor for making forms labor. I; /archives//html/Towertalk/1997-06/msg00792.html (8,264 bytes)
72. [TowerTalk] Re:TDR (score: 1): Author: broz@csn.net (John Brosnahan); Date: Wed, 25 Jun 1997 18:47:27 -0600 (MDT); I am not familiar with the guts of the AEA TDR but normally a TDR puts out a fast-rise-time DC pulse and there is no sine wave RF component. The PRF (pulse repitition frequency) is usually much lowe; /archives//html/Towertalk/1997-06/msg00884.html (10,509 bytes)
73. [TowerTalk] Rohn 45 overlap? (score: 1): Author: broz@csn.net (John Brosnahan); Date: Fri, 2 May 1997 09:36:37 -0600 (MDT); Steve, I have an older Rohn catalog and I guess they might have changed the design in the last few years, but if they haven't I would suggest that you check those bifocals out! HI Overall length of; /archives//html/Towertalk/1997-05/msg00043.html (8,874 bytes)
74. [TowerTalk] Rohn 45 overlap? (score: 1): Author: broz@csn.net (John Brosnahan); Date: Fri, 2 May 1997 10:59:55 -0600 (MDT); Part if my message got cut off--here is the rest of it. The sections of Rohn 45 would normally stack to 10ft 0-1/8 inch, but the holes for the bolts have clearances (for galvanizing, etc) and the wei; /archives//html/Towertalk/1997-05/msg00044.html (7,606 bytes)
75. [TowerTalk] Height to reduce QRM on 20 m? (score: 1): Author: broz@csn.net (John Brosnahan); Date: Wed, 14 May 1997 10:49:37 -0600 (MDT); Steve, Now you are figuring out the secret of why the big guns have high antennas-- it is a way to reduce QRM. But a single high antenna will still have some high angle lobes. The real secret is stac; /archives//html/Towertalk/1997-05/msg00358.html (7,689 bytes)
76. [TowerTalk] Is this pipe or mast (score: 1): Author: broz@csn.net (John Brosnahan); Date: Wed, 28 May 1997 18:18:46 -0600 (MDT); NO NO NOI If your salesman thinks tubing is only square get another saleman. Pipe is pipe, and Tubing can be round or square Call Kilsby-Roberts in the nearest large city and ask for their book "Tub; /archives//html/Towertalk/1997-05/msg00693.html (7,926 bytes)
77. [TowerTalk] Hy-Gain U-bolt sources (score: 1): Author: broz@csn.net (John Brosnahan); Date: Tue, 1 Apr 1997 09:59:52 -0700 (MST); Rod, it isn't a function of over-torquing the stainless steel hardware. When stainless steel galls the nut will lock up -- often long before it has been run all the down on the threads. Both aluminu; /archives//html/Towertalk/1997-04/msg00011.html (8,118 bytes)
78. [TowerTalk] How do u take down a tower? (score: 1): Author: broz@csn.net (John Brosnahan); Date: Mon, 14 Apr 1997 19:04:09 -0600 (MDT); Kevin, The old timers in the tower field walk away from derelict towers--that is why they are old timers! Cranes can work--but when pulling something from the middle of the roof of a building it may; /archives//html/Towertalk/1997-04/msg00407.html (10,306 bytes)
79. [TowerTalk] What happens? (score: 1): Author: broz@csn.net (John Brosnahan); Date: Wed, 16 Apr 1997 06:23:30 -0600 (MDT); Jim, Don't see any problem with putting two matchboxes in series other than the additional losses. But the Johnson KW Matchbox doesn't work on 160 meters so you can forget about using it on the vee b; /archives//html/Towertalk/1997-04/msg00467.html (7,530 bytes)
80. [TowerTalk] Re: Ground Rods & Ohms (score: 1): Author: broz@csn.net (John Brosnahan); Date: Wed, 16 Apr 1997 10:53:22 -0600 (MDT); Wayne, page 27-35 of the current editon of the ARRL Antenna Book shows how to build a very simple system to make the measurement. GL John W0UN -- FAQ on WWW: http://www.contesting.com/towertalkfaq.ht; /archives//html/Towertalk/1997-04/msg00481.html (9,105 bytes)

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