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41. [Towertalk] SteppIR Power Handling (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sat, 27 Jul 2002 22:52:19 -0400; Hi Rick, PEP is equal to CW carrier power. That's why we can run 1500 w PEP SSB, or 1500 watts CW carrier. Unless they give a specific lower CW or RTTY rating, "2kW PEP" specifically means 2 kW carr; /archives//html/Towertalk/2002-07/msg00741.html (7,688 bytes)
42. [Towertalk] SteppIR Power Handling (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sun, 28 Jul 2002 12:47:44 -0400; You are not alone Gary. I received about a dozen e-mails from people who are confused! The old limit was either 900 or 1000 watts dc input measured on meters with a specific response characteristic.; /archives//html/Towertalk/2002-07/msg00747.html (9,176 bytes)
43. [Towertalk] grounding system (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 29 Jul 2002 08:08:46 -0400; Part of the problem with taking things literally is people who market things always try do the best job they can in pitching the need for their devices. What we read, even though traceable to facts,; /archives//html/Towertalk/2002-07/msg00781.html (10,699 bytes)
44. [Towertalk] impossible ground (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 29 Jul 2002 08:24:48 -0400; Actually that makes very little difference, if he routes the cables and connects things correctly. If ICE instructed him to ONLY use a single point connection panel at ground level, that is very BAD; /archives//html/Towertalk/2002-07/msg00784.html (8,071 bytes)
45. [Towertalk] grounding system (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 29 Jul 2002 22:02:46 -0400; Think of what you don't want, and avoid it. What you absolutely don't want is a loop that allows current to flow through equipment from the power lines, telco lines, or tower (they are likely "hit"; /archives//html/Towertalk/2002-07/msg00808.html (11,993 bytes)
46. [Towertalk] Ground wire impedance (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 29 Jul 2002 22:02:47 -0400; At high frequencies, for the same outer diameter, stranded wire has less effective surface area. That's because current pushes to the outer edges of each stand, and the wire has an air gap between s; /archives//html/Towertalk/2002-07/msg00809.html (9,398 bytes)
47. [Towertalk] Ground wire impedance (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 29 Jul 2002 22:02:45 -0400; Solid wire has lower resistance than hollow "wire", for the same outer diameter at frequencies where the wall thickness is less than several skin depths. At radio frequencies, it generally makes no; /archives//html/Towertalk/2002-07/msg00810.html (8,780 bytes)
48. [Towertalk] Insulated ladder line next to grounded tower (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 7 Jun 2002 07:01:27 -0400; Sure, but it should be kept several inches or more away from the tower and twisted if you want to hang it near or on the tower. 73, Tom W8JI W8JI@contesting.com; /archives//html/Towertalk/2002-06/msg00083.html (6,785 bytes)
49. [Towertalk] is an LP a good sloper top hat? (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sat, 8 Jun 2002 06:50:18 -0400; You can connect the log elements to the boom, so far as the slopper is concerned, without hurting the log. This assumes the log operates far above the frequency of the slopper, such as a 14-30 MHz l; /archives//html/Towertalk/2002-06/msg00101.html (7,890 bytes)
50. [Towertalk] Helically wound vertical dipoles (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sat, 8 Jun 2002 06:50:16 -0400; Helically loaded antennas are generally equivalent to something slightly above base-loaded and worse than center loaded antennas in radiation characteristics and efficiency. Of course this can vary; /archives//html/Towertalk/2002-06/msg00102.html (7,785 bytes)
51. [Towertalk] log feed systems (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 10 Jun 2002 04:55:46 -0400; Since such antennas generally have two booms functioning as a balanced line, you run into a problem if the common-mode impedance at the top of the tower happens to be low at the operating frequency; /archives//html/Towertalk/2002-06/msg00120.html (10,176 bytes)
52. [Towertalk] Rope (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Tue, 11 Jun 2002 10:39:42 -0400; I buy a soft black rope Home Depot sells. A 600 foot roll of 3/8th inch is about $85. I've had several ropes up for three years over my 300 foot tower in the Georgia sun with no signs at all of dete; /archives//html/Towertalk/2002-06/msg00139.html (7,736 bytes)
53. [Towertalk] structural assumptions// rope--bolts (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 13 Jun 2002 05:08:51 -0400; I've had original equipment Rohn bolts rust. I also doubt you'll find any reasonable quality hardened or stainless bolts weaker than the Rohn bolts. Not that it matters, because even the Rohn bolt i; /archives//html/Towertalk/2002-06/msg00161.html (9,749 bytes)
54. [Towertalk] rope (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 13 Jun 2002 05:08:52 -0400; Same here. Right you are. I couldn't imagine working with a rope that doesn't stretch a bit! It would be like using wire-rope to install tower sections!73, Tom W8JI W8JI@contesting.com; /archives//html/Towertalk/2002-06/msg00162.html (8,322 bytes)
55. [Towertalk] structural assumptions// bolts - Orion 2800 (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 13 Jun 2002 11:23:40 -0400; Unless you are sealing leaks, Loctite is a band-aid for design problems. It almost never works anyway, as you found out. Critical automotive bolts are actually lubricated rather than glued! I lubric; /archives//html/Towertalk/2002-06/msg00170.html (11,674 bytes)
56. [Towertalk] Snake Antennas (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 14 Jun 2002 21:59:05 -0400; Here is a copy of something I just posted on the 160m reflector, and on the topband reflector. The snake antenna is really just a random wire laid on the ground. It may have specific construction det; /archives//html/Towertalk/2002-06/msg00215.html (9,000 bytes)
57. [Towertalk] MFJ 890 (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 14 Jun 2002 21:59:04 -0400; I'm afraid he might not have explained the operation clearly enough, or he doesn't really know how it works. What actually happens is the MFJ-890 has a VLF receiver for WWV, and a microprocessor ins; /archives//html/Towertalk/2002-06/msg00216.html (9,308 bytes)
58. [Towertalk] Help locating freestanding tower (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sat, 15 Jun 2002 07:42:48 -0400; With free-standing towers, especially those with flange-type joints that is true. Cross-bolted tower joints do not put stress on the bolts, other than modest cutting (shear) pressure! The bolts used; /archives//html/Towertalk/2002-06/msg00225.html (7,917 bytes)
59. [Towertalk] rope (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sun, 16 Jun 2002 05:53:06 -0400; That isn't a rope problem, it is a lack of common sense problem. Only an absolute fool would pull a load while the load is jumping or jerking. 73, Tom W8JI W8JI@contesting.com; /archives//html/Towertalk/2002-06/msg00241.html (8,077 bytes)
60. [Towertalk] Snake Antennas (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 17 Jun 2002 05:27:02 -0400; Hi Tom, The way coaxial cable and radio signals work, the snake really behaves as a random wire laid on the ground. There is a lot of arm-waving theoretical baffle-gab about shields and radio signal; /archives//html/Towertalk/2002-06/msg00248.html (8,935 bytes)

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