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221. Re: [TowerTalk] step away from stepIR (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Tue, 12 Jun 2007 23:29:33 +0000
Real interesting comments from everyone in response to my questions--thanks. Yes I assumed some sort of balun would be used--I made no mention of it because it is a standard part of yagi design usual
/archives//html/Towertalk/2007-06/msg00357.html (9,158 bytes)

222. [TowerTalk] re Ask the experts (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Fri, 06 Jul 2007 23:24:37 +0000
Hi Dick, I must say that I have never seen the yagi evaluation report, but I did get the one for verticals. I had put up a Gap Titan. I was getting signal reports on 40 meters of 10 db over S9 runnin
/archives//html/Towertalk/2007-07/msg00283.html (8,865 bytes)

223. Re: [TowerTalk] [wwdxc] RG213 Woes (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Thu, 19 Jul 2007 21:58:04 +0000
Two thoughts: A. Are we talking about the same things--to me, "Barrel" = two males (plugs) end to end. "Bullet" = two females (jacks) end to end. Barrels and bullets must have ends that are in the sa
/archives//html/Towertalk/2007-07/msg00746.html (8,961 bytes)

224. [TowerTalk] Ground wire guage (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Mon, 23 Jul 2007 16:48:43 +0000
I would not use stranded wire, even no. 2, for grounds. I'd use copper strap, 2 inches wide. 73, rob / k5uj _________________________________________________________________ http://imagine-windowsliv
/archives//html/Towertalk/2007-07/msg00886.html (7,031 bytes)

225. [TowerTalk] Contesting.com lists (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Mon, 23 Jul 2007 16:52:34 +0000
There have been two or three non-antenna posts to tower talk lately from people who say they did not know about other reflectors such as Amps and RFI. I thought I'd mention that if you go to http://l
/archives//html/Towertalk/2007-07/msg00887.html (6,819 bytes)

226. [TowerTalk] 160m Inverted L (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Mon, 23 Jul 2007 17:14:05 +0000
I read a broadcasting industry study last year (I'm sorry but I stink at remembering sources so I can't cite it unfortunately other than to say I think it was in IEEE transactions on broadcasting) th
/archives//html/Towertalk/2007-07/msg00888.html (8,651 bytes)

227. Re: [TowerTalk] Radials, contd. (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Thu, 02 Aug 2007 17:25:54 +0000
If you were going to try the Y idea, it would be better to flip the Ys so you have two radials tapering into one. Here's why--in the near field, you have most of your return current and that is where
/archives//html/Towertalk/2007-08/msg00047.html (12,120 bytes)

228. [TowerTalk] re how tall is that tower (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Thu, 02 Aug 2007 18:44:31 +0000
Hi Carl, what bands do you operate on? the 520 foot band? 130 feet? 32.5 is really fun right now with all the short skip. I love 520 feet in the winter time. Ever think you've been outside beaning a
/archives//html/Towertalk/2007-08/msg00056.html (6,971 bytes)

229. Re: [TowerTalk] re how tall is that tower (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Thu, 02 Aug 2007 21:28:07 +0000
they dont. it's mv/meter at 1 km. actually the distance varies depending on the type of proof, height of tower, whether or not it is a DA or ND antenna but in all cases the distances are in km. rob /
/archives//html/Towertalk/2007-08/msg00068.html (8,385 bytes)

230. [TowerTalk] re Tower (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Fri, 03 Aug 2007 16:45:21 +0000
Those photos of the 25G takedown and the raising of the 45G were great and well done. The job was well done too and I know on a major project such as that it is very very difficult to think of everyt
/archives//html/Towertalk/2007-08/msg00101.html (7,034 bytes)

231. [TowerTalk] re Tower (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Sun, 05 Aug 2007 01:06:37 +0000
hi Dave, that's a real interesting way of sectionalizing a tower. where did you get those insulator assemblies? the sectionalized towers I've seen before had each leg insulated but the base pivoted.
/archives//html/Towertalk/2007-08/msg00157.html (7,803 bytes)

232. [TowerTalk] re 25G base insulator (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Mon, 06 Aug 2007 16:31:11 +0000
Hi, AM broadcast stations don't use 25 all that often so insulators for it are kind of unusual. Rohn used to make a bottom taper and insulator so you might give them a try, or whoever is making the R
/archives//html/Towertalk/2007-08/msg00202.html (8,170 bytes)

233. Re: [TowerTalk] re 25G base insulator (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Mon, 06 Aug 2007 22:56:52 +0000
I know that's been done before, at least with fairly short verticals (1/4 w. 80 m.; maybe even 1/4 w. on 160) but since a top section is really made to handle holding a mast I do not know how much do
/archives//html/Towertalk/2007-08/msg00209.html (10,994 bytes)

234. [TowerTalk] Hygain pushup masts for 80m verticals? (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Mon, 20 Aug 2007 18:16:56 +0000
Hi Neal, If you are writing about the mast that's aluminum, 65 feet tall and uses 11 six foot sections, I'd avoid it myself. The bottom is 2" o.d. and this tapers down to around .6" at the top. Perso
/archives//html/Towertalk/2007-08/msg00538.html (8,683 bytes)

235. Re: [TowerTalk] Hygain pushup masts for 80m verticals? (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Mon, 20 Aug 2007 23:24:38 +0000
I bought two 50 foot steel pushups from an outfit in Memphis 2 years ago when I was down there--they were the last ones they had. I got them for $90 each--they took $30 off to get rid of them. Last y
/archives//html/Towertalk/2007-08/msg00552.html (10,518 bytes)

236. [TowerTalk] 25G insulator (score: 1)
Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
Date: Fri, 31 Aug 2007 16:31:17 +0000
A year or so ago I saw the Rohn 25G base insulator for sale from a vendor somewhere on the web. This was the single point commercial broadcast type ceramic oil filled insulator which is what I think
/archives//html/Towertalk/2007-08/msg00828.html (8,834 bytes)

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