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41. Re: [TowerTalk] Wired Anemometer for Tower? (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sun, 27 Apr 2014 19:08:04 -0500
I'm not sure that's true about the wind. I have a Davis Vantage Vue. The remote unit does some processing to generate a 2 s mean speed and a peak gust value within the 2 s window. Data are then sent
/archives//html/Towertalk/2014-04/msg00574.html (16,234 bytes)

42. Re: [TowerTalk] Wired Anemometer for Tower? (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sun, 27 Apr 2014 23:23:17 -0500
I can't speak to the Pro2 model, but any anemometer must average over a period. I was incorrect about the Vue: it yields 4 s averages in each packet. Sonic anemometers average over something like 10
/archives//html/Towertalk/2014-04/msg00584.html (20,349 bytes)

43. [TowerTalk] Raunchy pictures yet again (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Mon, 28 Apr 2014 20:33:10 -0500
This time I appear to be targeted. What does the admin need from me? Kim N5OP "People that make music together cannot be enemies, at least as long as the music lasts." -- Paul Hindemith _____________
/archives//html/Towertalk/2014-04/msg00606.html (6,702 bytes)

44. Re: [TowerTalk] Wired Anemometer for Tower? (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Mon, 28 Apr 2014 12:58:19 -0500
Al is exactly correct in his assessment. Meteorologists (like me) worry about this stuff all the time. If we want to measure the turbulence spectrum down to the eddy dissipation rate, we need extreme
/archives//html/Towertalk/2014-04/msg00613.html (32,629 bytes)

45. Re: [TowerTalk] Crank-up base (score: 1)
Author: Kimberly Elmore <cw_de_n5op@sbcglobal.net>
Date: Thu, 1 May 2014 13:03:48 -0700 (PDT)
I did exactly this with a base for my Rohn HDBX48 tower. The plywood will slowly decompose and as it does, soil will filter in to take its place. For all practical purposes, it all remains "undisturb
/archives//html/Towertalk/2014-05/msg00010.html (9,745 bytes)

46. Re: [TowerTalk] ROHN TOWER BOLTS (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Thu, 8 May 2014 21:04:59 -0500
That's contrary to my experience. I've had many SS nuts and bolts gall upon removal that did not gall upon application. However, it has not recurred since I started using anti-seize compound. Kim N5O
/archives//html/Towertalk/2014-05/msg00159.html (10,597 bytes)

47. Re: [TowerTalk] Recommendations for Purchasing a short 2 Element 40 Meter Beam (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Wed, 30 Jul 2014 11:07:43 -0600
It's far from the best out there, but the Cushcraft XM-402 has a pretty good bang for the buck. I've had the earlier model for almost 20 years up only about 48 ft and it helps quite a bit. I use a st
/archives//html/Towertalk/2014-07/msg00266.html (10,206 bytes)

48. Re: [TowerTalk] Topband: Shunt feeding tower (score: 1)
Author: Kimberly Elmore <cw_de_n5op@sbcglobal.net>
Date: Wed, 27 Aug 2014 09:17:09 -0700
I shunt feed my small (HDBX-48) tower on top band. All my cables are run inside the tower and I have had no problems with RFI into anything at 1500 W. Kim N5OP I believe it was ON4UN that suggested r
/archives//html/Towertalk/2014-08/msg00459.html (10,333 bytes)

49. Re: [TowerTalk] Is A Tower Weaker in Some Directions? (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sun, 5 Oct 2014 14:15:48 -0500
I don't think wind direction matters. However, a leg is in the most tension when the wind is dead onto an apex. A leg is in the most compression when the wind is dead onto a face. Beyond that, loads
/archives//html/Towertalk/2014-10/msg00029.html (12,811 bytes)

50. Re: [TowerTalk] Is A Tower Weaker in Some Directions? (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sun, 05 Oct 2014 21:18:18 -0500
I should add that I was considering a free-standing tower (which is what I have). In the case of a guyed tower, the harder the wind blows, the more the downward force on the tower legs, all of them.
/archives//html/Towertalk/2014-10/msg00038.html (14,752 bytes)

51. Re: [TowerTalk] Climbing (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Tue, 7 Oct 2014 11:30:04 -0500
I don't see the point I trying to prove that wearing a harness is hazardous. If you choose not to wear one, fine. But don't try to convince me it's dangerous or a waste of my time. I preflight my air
/archives//html/Towertalk/2014-10/msg00062.html (10,234 bytes)

52. Re: [TowerTalk] What Balun for KLM KT-34XA (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sat, 18 Oct 2014 10:34:36 -0500
Both the KT34A and XA are designed to have a 200 ohm feed impedance. A 4:1 balun is what's needed. Kim N5OP "People that make music together cannot be enemies, at least as long as the music lasts." -
/archives//html/Towertalk/2014-10/msg00218.html (8,459 bytes)

53. Re: [TowerTalk] Corrosion of Copper Ground Conductors (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Wed, 22 Oct 2014 21:21:00 -0500
I think that the short answer is "yes." The copper will corrode though it's a slow process. Fundamentally, that's why we don't find much copper in a pure form. You might be able to forestall it with
/archives//html/Towertalk/2014-10/msg00272.html (8,998 bytes)

54. Re: [TowerTalk] Ham IV Direction Controller PLUS (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Thu, 23 Oct 2014 21:29:50 -0500
If they are supplied with 24 VAC, they must be incandescent: 2 x 12 V in series and probably grain-of-wheat lamps. Easy to get and cheap at radio shack. Kim N5OP "People that make music together cann
/archives//html/Towertalk/2014-10/msg00319.html (8,766 bytes)

55. Re: [TowerTalk] Fwd: Cad welding vs clamps (score: 1)
Author: Kimberly Elmore <cw_de_n5op@sbcglobal.net>
Date: Fri, 24 Oct 2014 06:26:26 -0700
I'll take FORTRAN. Kim N5OP The code allows you to drive the rod at an angle. down. IEEE 142-1999 Table 13 has formulas for all kinds of configurations of rods, wires, straps and the like. there's a
/archives//html/Towertalk/2014-10/msg00326.html (9,624 bytes)

56. Re: [TowerTalk] Fwd: Cad welding vs clamps (score: 1)
Author: Kimberly Elmore <cw_de_n5op@sbcglobal.net>
Date: Fri, 24 Oct 2014 07:50:31 -0700
Not to make too fine a point of it, but... At least when I learned it it was FORTRAN, but according to Wikipedia, it's now officially Fortran. Here's the excerpt: "Fortran (previously FORTRAN, derive
/archives//html/Towertalk/2014-10/msg00331.html (11,332 bytes)

57. Re: [TowerTalk] Long pole / simple, tall construction for small antenna (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sun, 26 Oct 2014 12:10:53 -0500
I can't speak for the list, but I think it's a safe bet that very few, if anyone, here has constructed their own tower from scratch as you propose. Most of us use engineered towers. If you want any k
/archives//html/Towertalk/2014-10/msg00361.html (10,445 bytes)

58. Re: [TowerTalk] HDBX48 (score: 1)
Author: Kimberly Elmore <cw_de_n5op@sbcglobal.net>
Date: Fri, 14 Nov 2014 07:17:56 -0800
I should add that my HDBX48 has been loaded to about 13 sq ft for nearly the entire time I've owned it. Early on I also put an anemometer and wind vane on it but not at the very top. The highest meas
/archives//html/Towertalk/2014-11/msg00222.html (9,143 bytes)

59. Re: [TowerTalk] Regarding Rohn HDBX48 tower spec's. (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Mon, 17 Nov 2014 12:02:07 -0600
I have to concur with the climbing: it's very uncomfortable to climb. Once at the top, one face has ladder "steps," but getting there isn't fun. If you can't do what's needed from that face, it gets
/archives//html/Towertalk/2014-11/msg00259.html (13,374 bytes)

60. Re: [TowerTalk] Choking on chokes (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Wed, 3 Dec 2014 20:50:45 -0600
For the purpose of a choke, I used a couple of 2.4" OD ferrite toroid cores stacked as a choke-type balun for an OCFD (a Force 12 Sigma 80). I wound about 20 bifilar turns of 16 ga enameled wire on t
/archives//html/Towertalk/2014-12/msg00018.html (9,698 bytes)


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