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Total 314 documents matching your query.

181. Re: [TowerTalk] Overhead cables from tower to shack (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Fri, 21 Sep 2012 19:39:47 +0000
I agree with John G4ZTR: Don't just hang a messenger wire (what your steel wire is called) onto your tower and load it with coax and control cables without considering the sideways force this will im
/archives//html/Towertalk/2012-09/msg00377.html (8,947 bytes)

182. Re: [TowerTalk] Overhead cables from tower to shack (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Fri, 21 Sep 2012 19:45:16 +0000
There is a program which you can use to estimate the side load on the tower. Look at the following link. http://www.spaceagecontrol.com/calccabl.htm?F=75&a=85&q=0.200044091&g=32.18503937&Submit+Butto
/archives//html/Towertalk/2012-09/msg00378.html (9,941 bytes)

183. Re: [TowerTalk] tower height repost (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Sun, 14 Oct 2012 22:16:21 +0000
I don't know if HTTA has any arrival angle data for 6M. It's predecessor YTAD did not. Without arrival angle data how would you know some antenna height change is good, bad or indifferent. I seem to
/archives//html/Towertalk/2012-10/msg00214.html (9,682 bytes)

184. [TowerTalk] TH-2 Large SWR changes during day (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Sat, 20 Oct 2012 02:39:56 +0000
This has been a nightmare. I got a new TH-2 a few months ago. Mounted on the roof at 22'. 10/20M behaved as expected. Tuned for the CW segment. 15M had a high SWR at the low end of the CW band. I tri
/archives//html/Towertalk/2012-10/msg00336.html (9,385 bytes)

185. Re: [TowerTalk] Coax Matching Stubs W/Smith Chart (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Thu, 01 Nov 2012 12:07:55 +0000
I may be wrong but I believe one has to know the complex impedance of the mismatched load before doing anything. This is the real problem as most hams can't measure anything but SWR. There are lots o
/archives//html/Towertalk/2012-11/msg00006.html (9,636 bytes)

186. Re: [TowerTalk] HamIV Rotor sluggish (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Sun, 13 Jan 2013 14:47:12 +0000
Came late to this thread. Running slow, baring mechanical binding usually is caused by defective motor capacitor in control box. Replacing it does wonders. 73 de Brian/K3KO Before you do anything, wh
/archives//html/Towertalk/2013-01/msg00149.html (9,894 bytes)

187. Re: [TowerTalk] Entry Point for Coax/Cable (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Thu, 31 Jan 2013 15:19:01 +0000
You might also consider the total coax length of each option. You don't say what frequencies you plan to operate. However if 6M and above an extra 75' might introduce significant extra loss-- dependi
/archives//html/Towertalk/2013-01/msg00338.html (10,671 bytes)

188. Re: [TowerTalk] Fwd: Fwd: Temporary tower/antenna question (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Sat, 02 Feb 2013 19:39:37 +0000
I guess the rest of the earth is flat. With the uneven terrain around here no way pre-cut guys would work. Also there is a likelihood that where you try to screw in an anchor, you can't because of ro
/archives//html/Towertalk/2013-02/msg00045.html (15,129 bytes)

189. Re: [TowerTalk] Fwd: Relatively large tower base install questions. (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Tue, 05 Mar 2013 18:50:58 +0000
The problem of "towers" walking them selves up from the ground is something the utility companies have a lot of experience. It seems that wind direction changes exert forces on one side and then anot
/archives//html/Towertalk/2013-03/msg00040.html (17,178 bytes)

190. Re: [TowerTalk] [CQ-Contest] Stacking on separate towers, take off angles? (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Sun, 17 Mar 2013 22:04:12 +0000
Guys, I really don't know why these wildly varying multiple lobes is a big surprise. Astronomers have been horizontally "stacking" antennas for more than 50 years. Some of the baselines are as large
/archives//html/Towertalk/2013-03/msg00219.html (13,343 bytes)

191. Re: [TowerTalk] misaligned vertical towers (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Sun, 24 Mar 2013 17:09:24 +0000
Once the discussed towers are measured, it would be interesting to know what the conclusions are. The eye is easily fooled with regards to verticality. Even the Romans knew this. The columns to their
/archives//html/Towertalk/2013-03/msg00338.html (10,411 bytes)

192. Re: [TowerTalk] CDR TR-2 rotor (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Wed, 27 Mar 2013 20:28:15 +0000
John, I can tell you it cannot handle a 3 element tribander. Way back when my TA-33jr continually stripped its gears. The rotor has no brake. I went through about five sets of gears before getting ri
/archives//html/Towertalk/2013-03/msg00403.html (8,635 bytes)

193. [TowerTalk] Magnetic 304 SS- Huh? (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Thu, 28 Mar 2013 17:18:07 +0000
Guys, I purchased a roll of 3/16" SS wire rope which was clearly labeled 304SS from Home Depot. When I got home, I tested it with a magnet. It was highly attractive. It gets returned. I know there ar
/archives//html/Towertalk/2013-03/msg00415.html (7,880 bytes)

194. Re: [TowerTalk] Magnetic 304 SS- Huh? (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Thu, 28 Mar 2013 17:47:08 +0000
That is the article I used to make my judgement. The reason that "magnetism matters": It is the only method at my disposal to determine real SS from fake. I simply distrust anything made in China as
/archives//html/Towertalk/2013-03/msg00419.html (9,570 bytes)

195. Re: [TowerTalk] Trap Drain Holes (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Tue, 09 Apr 2013 09:55:57 +0000
I lost one trap due to exactly this. Wood wasp got into the trap and built his mud and saliva nest. I've taken a bit different route. I use fine mesh plastic window screen. The reasoning of course is
/archives//html/Towertalk/2013-04/msg00091.html (8,896 bytes)

196. Re: [TowerTalk] 160m OCF etc (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Wed, 05 Jun 2013 12:44:38 +0000
Yes, if it conducts it will radiate. This is the put up the any old thing philosophy. However, experimentation is expensive and time consuming and has the possibility of hobbling ones signal. That ca
/archives//html/Towertalk/2013-06/msg00075.html (9,165 bytes)

197. Re: [TowerTalk] D3W - Pros and Cons? (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Mon, 17 Jun 2013 11:27:32 +0000
Have had some trouble with intermittent traps and water in the traps. Look at E-HAM reviews, others have too. The water in the traps appears to come from the "downhill" trap covers not keeping water
/archives//html/Towertalk/2013-06/msg00252.html (9,610 bytes)

198. Re: [TowerTalk] Screw Anchor Experience (score: 1)
Author: Brian Alsop <alsopb@nc.rr.com>
Date: Wed, 19 Jun 2013 00:54:28 +0000
Shawn, You say the tower is an EZWAY. Do you mean the two or three section crankup tower with the wonder ground post? I had three of them over a 10 year period in the 60's. If you do: 1) The tower is
/archives//html/Towertalk/2013-06/msg00297.html (11,737 bytes)

199. [TowerTalk] Wireless Internet RFI (score: 1)
Author: Brian Sarkisian <cqkg8co@gmail.com>
Date: Mon, 29 Jul 2013 13:07:04 -0400
I recently had an internet wireless antenna/unit installed as our DSL was painfully slow. Now I notice RFI in the AM broadcast band and into the 160 meter band. There may more RFI issues on other ban
/archives//html/Towertalk/2013-07/msg00532.html (6,976 bytes)

200. [TowerTalk] Triex LM470 Recabling question (score: 1)
Author: Brian Dresser <brdresser@hotmail.com>
Date: Mon, 29 Jul 2013 13:48:17 -0500
I've ordered and received the replacement cable from Tashjian the cables for my lm470. Only problem is my lm470 cable was one long piece whereas the ones Tashjian sent are multiple pieces for each se
/archives//html/Towertalk/2013-07/msg00533.html (7,356 bytes)


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