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61. [TowerTalk] Am I asking for trouble? - tower loading (score: 1)
Author: <john@kk9a.com>
Date: Sun, 15 Oct 2006 20:49:59 -0400
Why is this your only option. You didn't say which UST model you are considering, so I will assume that it is the heaviest one in their catalog. Perhaps they or another crankup tower company can make
/archives//html/Towertalk/2006-10/msg00416.html (7,663 bytes)

62. Re: [TowerTalk] N or UHF? (score: 1)
Author: <john@kk9a.com>
Date: Mon, 16 Oct 2006 21:28:59 -0400
I have used many N connectors, mostly on hardline but also on coax and I never had a problem. I used the conventional style ones on RG-213 and they were not difficult to install. Perhaps with some co
/archives//html/Towertalk/2006-10/msg00449.html (8,246 bytes)

63. Re: [TowerTalk] Cushcraft D40 and Force-12 yagis (score: 1)
Author: <john@kk9a.com>
Date: Wed, 18 Oct 2006 10:21:05 -0400
You would need to model your system to know the interaction. Since you are mounting the 40m antenna 90 degrees to the C31XR, I would suspect that it would have little effect on the C31XR. The D40 is
/archives//html/Towertalk/2006-10/msg00481.html (8,748 bytes)

64. [TowerTalk] Slow Attenuation of Incoming Signal (score: 1)
Author: <john@kk9a.com>
Date: Thu, 19 Oct 2006 15:37:58 -0400
If it's only on 40m, it is probably a bad antenna relay. If it is on all bands it's probably an amplifier relay. I have experienced both problems and I now never mount an antenna relay up on the towe
/archives//html/Towertalk/2006-10/msg00535.html (7,893 bytes)

65. Re: [TowerTalk] Behringer RFI (score: 1)
Author: <john@kk9a.com>
Date: Thu, 19 Oct 2006 19:32:08 -0400
The site just links to paint products. I'm not sure what this has to do with towers or HF antennas. John KK9A Hmmmmm..... I just stumbled across Behringer recently on the web... they have a good look
/archives//html/Towertalk/2006-10/msg00543.html (7,387 bytes)

66. Re: [TowerTalk] Behringer RFI (score: 1)
Author: <john@kk9a.com>
Date: Thu, 19 Oct 2006 22:03:59 -0400
They don't make towers Hank. The problem is there is no list for RFI problems so they frequently show up here. Perhaps in the future someone will start one. John KK9A I didn't realize that Behringer
/archives//html/Towertalk/2006-10/msg00551.html (7,342 bytes)

67. Re: [TowerTalk] re coax jumpers help (score: 1)
Author: <john@kk9a.com>
Date: Fri, 20 Oct 2006 14:43:55 -0400
The power handling capability of coax varies with the frequency. I think 1500 watts on HF is really pushing the limits of RG8X. Anyway, that much power is not needed to talk to someone only 30 feet a
/archives//html/Towertalk/2006-10/msg00578.html (8,754 bytes)

68. [TowerTalk] Shortened Guy Leads On R25G (score: 1)
Author: <john@kk9a.com>
Date: Tue, 24 Oct 2006 03:21:54 -0000
I don't think anyone except a PE can tell you if this is safe. My 70' tower in Aruba has more wind load than yours and a smaller guy radius, however I used Rohn 55g and also 5' high guy posts. Since
/archives//html/Towertalk/2006-10/msg00674.html (8,050 bytes)

69. [TowerTalk] Unguyed Guyed Tower (score: 1)
Author: <john@kk9a.com>
Date: Tue, 24 Oct 2006 23:42:44 -0000
I guess ice makes Rohn 65G stronger? I agree, if you want an unguyed tower, buy a self supporting tower. The base is larger to properly handle the load. John KK9A I think you're reading the Rohn spec
/archives//html/Towertalk/2006-10/msg00681.html (7,180 bytes)

70. [TowerTalk] Declination Question (True North) (score: 1)
Author: <john@kk9a.com>
Date: Thu, 2 Nov 2006 02:11:20 -0000
I'm doing some antenna work in Aruba and I would like to properly align my antenna north using a compass, not by staring into the Sun or some other star, etc. If I calculated this properly the declin
/archives//html/Towertalk/2006-11/msg00024.html (7,241 bytes)

71. [TowerTalk] TIC 1122 Fixed (score: 1)
Author: <john@kk9a.com>
Date: Wed, 8 Nov 2006 03:23:13 -0000
I own one 1022 and six 1032 TIC rotators, although to be honest last week I removed the last one in service and all are now in storage. TIC has excellent customer service, however I have had some qua
/archives//html/Towertalk/2006-11/msg00158.html (9,161 bytes)

72. [TowerTalk] Max Unguyed Rohn 25 height to support dipole end (score: 1)
Author: <john@kk9a.com>
Date: Sun, 12 Nov 2006 01:38:37 -0000
Is this worth the effort? I think a top loaded vertical or inverted "L" would work much better. John KK9A Gents, I have a pile of Rohn 25 that I'd like to use to support the ends of a 160 mtr dipole.
/archives//html/Towertalk/2006-11/msg00245.html (7,366 bytes)

73. Re: [TowerTalk] Max Unguyed Rohn 25 height to support dipole end (score: 1)
Author: <john@kk9a.com>
Date: Sun, 12 Nov 2006 23:22:35 -0000
If you raise the ends to the same height as the center, assuming it's 100' high or so, you will have a bi-directional antenna instead of an omni-directional one. You'll gain about 2dB's broadside and
/archives//html/Towertalk/2006-11/msg00269.html (9,908 bytes)

74. [TowerTalk] Yaesu Rotor problem (score: 1)
Author: <john@kk9a.com>
Date: Tue, 14 Nov 2006 19:37:01 -0000
The first thing I would do is check your connections, especially the one on the rotator. Some, if not all, Yaesu rotators have a rubber boot on the connector that does not effectively keep water out.
/archives//html/Towertalk/2006-11/msg00315.html (7,628 bytes)

75. [TowerTalk] Fastening sections of 3" boom material (score: 1)
Author: <john@kk9a.com>
Date: Tue, 21 Nov 2006 14:20:42 -0000
For splices of 3 inch x 1/8 wall boom, I use 2 1/2" Schedule 40 6061-T6 aluminum pipe. The O.D. is 2.875 and the I.D. is 2.469. Then I have the O.D. machined to 2.735 - 2.740. John KK9A / P40A I'm co
/archives//html/Towertalk/2006-11/msg00473.html (7,288 bytes)

76. [TowerTalk] BIG array (score: 1)
Author: <john@kk9a.com>
Date: Thu, 23 Nov 2006 23:35:28 -0000
A discussion of this array was on towertalk about a year ago. I don't recall if anyone ever found out his purpose for designing and building this system. For normal HF communication there is no advan
/archives//html/Towertalk/2006-11/msg00624.html (8,066 bytes)

77. Re: [TowerTalk] Plumbing a Tower (score: 1)
Author: <john@kk9a.com>
Date: Tue, 28 Nov 2006 18:22:17 -0500
Last week I changed the guy wires and grips on my P40A tower. The old ones were pretty corroded after being up for four years. I have not found a non-corrosive method of guying yet. I used a transit
/archives//html/Towertalk/2006-11/msg00812.html (8,931 bytes)

78. Re: [TowerTalk] Stuck aluminum tubes and caution (score: 1)
Author: <john@kk9a.com>
Date: Wed, 29 Nov 2006 15:33:08 -0500
I would be a little cautious about using PB Blaster. I believe it's basically made for unsticking rusted steel parts. I tried Liquid Wrench once to loosen some antenna parts and it made it more diffi
/archives//html/Towertalk/2006-11/msg00865.html (7,920 bytes)

79. [TowerTalk] Re; Digest subscribers - please read (score: 1)
Author: <john@kk9a.com>
Date: Fri, 1 Dec 2006 08:40:35 -0500
I think many of us readers would appreciate it if the digest users would insert the appropriate subject line before sending. Howdy -- In the last couple of days there have been replies to the digest
/archives//html/Towertalk/2006-12/msg00007.html (7,282 bytes)

80. [TowerTalk] Rain Induced Voltage (score: 1)
Author: <john@kk9a.com>
Date: Fri, 1 Dec 2006 11:08:35 -0500
Do Polyphaser lightning arrestors drain static? I thought they only shorted to ground after reaching a preset high voltage. He was only measuring 7 volts maximum on his coax. If it did drain at 7 vol
/archives//html/Towertalk/2006-12/msg00020.html (7,752 bytes)


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