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References: [ +from:k1ttt@verizon.net: 232 ]

Total 232 documents matching your query.

21. Re: [TowerTalk] Sealing coax connectors (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Tue, 17 Jan 2012 11:27:21 -0600 (CST)
cheaper, simpler, works fine here, but we only had 50" of rain last year.... take handful of duct seal, mold around connectors and over coax, wrap with two layers of cheap tape just to squeeze it in
/archives//html/Towertalk/2012-01/msg00348.html (8,112 bytes)

22. Re: [TowerTalk] Climbing Gear (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Mon, 06 Feb 2012 14:27:01 -0600 (CST)
In my opinion the most important thing is a steel shank. A hard stiff sole also helps. A good heel notch as opposed to a flat bottom is also necessary. I prefer leather uppers because cloth would sna
/archives//html/Towertalk/2012-02/msg00135.html (7,671 bytes)

23. Re: [TowerTalk] Climbing Gear (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Tue, 07 Feb 2012 06:30:42 -0600 (CST)
i don't like steel toes that much for climbing... the problem i have had with them is on rohn 25 pointy tops sometimes i would have to cram one foot in between the rotor and tower or in the small gap
/archives//html/Towertalk/2012-02/msg00156.html (8,581 bytes)

24. Re: [TowerTalk] Solutions for Tower Base in Fresh Water? (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Mon, 19 Mar 2012 08:11:08 -0500 (CDT)
you want a local engineer who understands how to build towers in that soil to design you a base and anchors. that is well outside the 'normal' stuff that is documented in the rohn standard drawings.
/archives//html/Towertalk/2012-03/msg00319.html (10,040 bytes)

25. Re: [TowerTalk] original source of "avoid sharp bends" in lightning (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Thu, 12 Apr 2012 09:00:47 -0500 (CDT)
If i had to guess i would start looking at old installation instructions for lightning rod installation. Did anyone make a do-it-yourself lightning rod kit? maybe an old Sears catalog or farm supply
/archives//html/Towertalk/2012-04/msg00172.html (10,889 bytes)

26. Re: [TowerTalk] original source of "avoid sharp bends" in lightning (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Thu, 12 Apr 2012 13:43:35 -0500 (CDT)
you have to remember that its not just the impedance, its the travel time to ground compared to the risetime of the lightning stroke. So if there is a bend that isn't too far from some other structur
/archives//html/Towertalk/2012-04/msg00196.html (13,084 bytes)

27. Re: [TowerTalk] Lightning ROD (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Thu, 12 Apr 2012 13:45:22 -0500 (CDT)
thats only important if you have a grounds keeper who keeps hitting them with the lawnmower. One thing I've not seen mntionedi is that many recomend the ground rod top needs to ge buried about eight
/archives//html/Towertalk/2012-04/msg00197.html (7,471 bytes)

28. Re: [TowerTalk] Boots (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Thu, 19 Apr 2012 08:18:33 -0500 (CDT)
look for ones with a heavy sole with steel support and good heel. the steel support prevents rung foot, and the good heel to give it a good place to hook onto the rung. if you can easily bend the sol
/archives//html/Towertalk/2012-04/msg00349.html (7,801 bytes)

29. Re: [TowerTalk] Help for a New Tower (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Tue, 24 Apr 2012 13:48:10 -0500 (CDT)
Since you have already talked to the zoning board and have the specs you must meet and since rohn doesn't provide adequate design drawings for your situation the fix is to get a qualified engineer to
/archives//html/Towertalk/2012-04/msg00537.html (8,911 bytes)

30. Re: [TowerTalk] Dipole feed (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Wed, 25 Apr 2012 08:41:12 -0500 (CDT)
"Assuming" that there is an adequate choke so that the currents are balanced it shouldn't matter which conductor from the coax goes to which side of the antenna... but i would hedge my bet and put th
/archives//html/Towertalk/2012-04/msg00551.html (8,039 bytes)

31. Re: [TowerTalk] Telrex Redesign (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Wed, 02 May 2012 09:11:49 -0500 (CDT)
i thought about that years ago also and decided the best option was to just optimize the lengths. this resulted in one director being eliminated electrically, but in order to keep the weight and wind
/archives//html/Towertalk/2012-05/msg00006.html (9,825 bytes)

32. Re: [TowerTalk] LRC - Lightning Retardant Cable (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Mon, 04 Jun 2012 06:18:31 -0500 (CDT)
the double shielding may be nice for preventing interference. The second shield and drain wire may help increase the current carrying capability to ground, but other than that it won't help lightning
/archives//html/Towertalk/2012-06/msg00049.html (9,056 bytes)

33. Re: [TowerTalk] Smoking control box or-2800dc semi conclusion... (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Tue, 05 Jun 2012 08:21:25 -0500 (CDT)
sounds like a poor practice to me, especially for long cables that may be exposed to lightning directly or nearby. The problem is that at the end where the ground is disconnected there is no way to e
/archives//html/Towertalk/2012-06/msg00054.html (11,119 bytes)

34. Re: [TowerTalk] Tower grounds (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Wed, 13 Jun 2012 06:53:02 -0500 (CDT)
no, there is either NO ground, or ONE ground, or 3 grounds, depending on who you talk to and about what type of phenomena... There is NO ground when you talk about lightning or rf and your component
/archives//html/Towertalk/2012-06/msg00114.html (9,225 bytes)

35. Re: [TowerTalk] potmeter / resolver for tower position to digital meter (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Wed, 13 Jun 2012 14:33:49 -0500 (CDT)
a pot, two pulleys, a belt, and a digital ohm meter... if you are careful about picking the size of the pulleys and the value of the pot you could even get it to read 0-360 without any conversion. ma
/archives//html/Towertalk/2012-06/msg00124.html (8,070 bytes)

36. Re: [TowerTalk] Info on ring rotors (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Tue, 24 Jul 2012 06:53:29 -0500 (CDT)
i have gone through a whole range of TIC rings. The newer 1122 models are much better than the older 1022 ones. The motor construction and bearing arrangements have been improved so that problems wit
/archives//html/Towertalk/2012-07/msg00270.html (9,560 bytes)

37. Re: [TowerTalk] Phone Pole as beam support? (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Wed, 25 Jul 2012 14:11:32 -0500 (CDT)
when you get the pole get one that is already drilled for mounting cross arms and a top insulator. then you can use threaded rod or the bolts that utilities use to clamp on the top insulator and arms
/archives//html/Towertalk/2012-07/msg00295.html (10,436 bytes)

38. Re: [TowerTalk] base insulators (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Wed, 01 Aug 2012 08:08:28 -0500 (CDT)
be careful with repurposing old insulators, or even in applying new insulators in cases that they haven't been designed for. I bought 4 big porcelain insulators for my elevated radial 80m 4-square ar
/archives//html/Towertalk/2012-08/msg00001.html (9,478 bytes)

39. Re: [TowerTalk] base insulators (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Wed, 01 Aug 2012 11:51:02 -0500 (CDT)
I agree with thicker plates if you are doing an insulator like that, the ones i got are probably 1/2" or so and well galvanized. the standard roof or pier pin plates are meant to be supported on thei
/archives//html/Towertalk/2012-08/msg00007.html (9,476 bytes)

40. Re: [TowerTalk] Spam update (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Thu, 16 Aug 2012 12:19:12 -0500 (CDT)
everyone should know there are at least 4 different ways you can be seen as sending spam and not know about it... and not all of them can be fixed by changing passwords! 1. virus on your machine - in
/archives//html/Towertalk/2012-08/msg00204.html (13,185 bytes)


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