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Total 20 documents matching your query.

1. [TowerTalk] Dayton (score: 1)
Author: "Roger Halstead" <roger@rogerhalstead.com>
Date: Mon, 25 Apr 2005 21:31:18 -0400
Is there going to be a TowerTalk get together at Dayton? HF antenna and tower forums? Anything of specific interest to TowerTalkians? 45 years a Ham and I've never made it to Dayton or even the Findl
/archives//html/Towertalk/2005-04/msg00710.html (7,053 bytes)

2. [TowerTalk] 8' Dish to good home (score: 1)
Author: "Roger Halstead" <roger@rogerhalstead.com>
Date: Mon, 6 Jun 2005 21:21:01 -0400
Last Winter I listed an 8' solid Aluminum dish with a polar mount to a good home. It was accepted, but a blizzard there slowed things up and then a blizzard here did the same. One computer crash late
/archives//html/Towertalk/2005-06/msg00204.html (7,735 bytes)

3. [TowerTalk] Chain and cable safety (score: 1)
Author: "Roger Halstead" <roger@rogerhalstead.com>
Date: Mon, 13 Jun 2005 00:39:34 -0400
The thread on pulling ground rods started me to thinking. I've worked around chains, cables, and ropes all my life. Anyone who has never seen a chain, cable, or rope under tension break would have a
/archives//html/Towertalk/2005-06/msg00334.html (9,234 bytes)

4. [TowerTalk] 8' C-Band dish with positioner free to good home (score: 1)
Author: "Roger Halstead" <roger@rogerhalstead.com>
Date: Tue, 5 Jul 2005 19:01:40 -0400
I have an 8' solid Aluminum C-Band dish with a polar mount on the shop apron that I'd like to see some one put to good use. Being solid (and relatively heavy) it'll take some work to move, but it can
/archives//html/Towertalk/2005-07/msg00125.html (7,645 bytes)

5. [TowerTalk] KLM 14L yagi element dimensions (score: 1)
Author: "Roger Halstead" <roger@rogerhalstead.com>
Date: Thu, 15 Sep 2005 04:14:41 -0400
I'm looking for the dimensions for the 14 element KLM yagis. These are the ones that have 4 driven elements through phasing reversal straps. I have the booms which are pre drilled, but as I recall th
/archives//html/Towertalk/2005-09/msg00490.html (7,794 bytes)

6. [TowerTalk] Restoring antennas ... Is it worth the effort. (score: 1)
Author: "Roger Halstead" <roger@rogerhalstead.com>
Date: Thu, 9 Nov 2006 17:54:10 -0500
Except for corroded connections I doubt making an antenna look new would even show a measurable difference in performance. OTOH I like mine to look like new as well.<:-)) Roger Halstead (K8RI and ARR
/archives//html/Towertalk/2006-11/msg00207.html (7,353 bytes)

7. [TowerTalk] Crank up PVC pole revisited (score: 1)
Author: Roger <roger@rogerhalstead.com>
Date: Tue, 25 Nov 2008 01:54:27 -0500
I have some photos of the crank up mast designed and built by ee, KC8ITI at http://www.rogerhalstead.com/Crankupmast.htm I believe it's somewhere between 20 and 30'. The photos are small, but I shoul
/archives//html/Towertalk/2008-11/msg00704.html (6,675 bytes)

8. Re: [TowerTalk] Re-bar Cage - welding ?? (score: 1)
Author: Roger <roger@rogerhalstead.com>
Date: Wed, 22 Sep 2010 17:01:50 -0400
If you look at the construction of most rebar cages it appears the cage does little. It's the individual sections of rebar, their shape, and overlap. IOW the cage is there to keep the concrete from l
/archives//html/Towertalk/2010-09/msg00603.html (11,167 bytes)

9. Re: [TowerTalk] securing loose element ends (score: 1)
Author: Roger <roger@rogerhalstead.com>
Date: Thu, 23 Sep 2010 00:52:14 -0400
As do I, but they will also work with properly swaged and fitted elements. I think you will find the piece that fits into the tool (I've forgotten the name of it) has barbed like edges, almost like a
/archives//html/Towertalk/2010-09/msg00604.html (12,016 bytes)

10. Re: [TowerTalk] Tower Permitting (score: 1)
Author: Roger <roger@rogerhalstead.com>
Date: Sat, 25 Sep 2010 15:43:19 -0400
Term limits sound great until you live in a state that has them. They aren't in office long enough to really become competent and the state is still pretty much run by the auto industry. Note where M
/archives//html/Towertalk/2010-09/msg00647.html (9,288 bytes)

11. Re: [TowerTalk] Schedule 40 pipe (score: 1)
Author: Roger <roger@rogerhalstead.com>
Date: Mon, 27 Sep 2010 18:51:53 -0400
Have you checked with the metal supply houses. I think they are referring to structural steel and mot water pipe. Structural steel tube comes in both schedule 40 and 80 just like water pipe, but the
/archives//html/Towertalk/2010-09/msg00712.html (8,295 bytes)

12. Re: [TowerTalk] Schedule 40 pipe (score: 1)
Author: Roger Halstead <Roger@rogerhalstead.com>
Date: Wed, 10 Nov 2010 02:57:23 -0500
It's unlikely this would be the same material used in structural steel tube and the needed specs might be hard to find and that might make getting it approved difficult. IIRC he needed to have it app
/archives//html/Towertalk/2010-11/msg00133.html (10,228 bytes)

13. Re: [TowerTalk] Pipe to mount vertical (score: 1)
Author: Roger <roger@rogerhalstead.com>
Date: Sat, 15 Jan 2011 17:39:07 -0500
Flexibility and elasticity should also be taken into account. There are things that will work and things that will destroy the antenna, particularly a vertical. Verticals as well as all structures ha
/archives//html/Towertalk/2011-01/msg00254.html (14,766 bytes)

14. Re: [TowerTalk] Close call with death (score: 1)
Author: Roger <roger@rogerhalstead.com>
Date: Sat, 15 Jan 2011 17:48:20 -0500
Although the color could be either fiber or GAS, 1 1/8" sounds large for either. Black is likely water. Digging into a gas line is dangerous, but normally deadly. OTOH it can be very expensive but no
/archives//html/Towertalk/2011-01/msg00256.html (10,966 bytes)

15. Re: [TowerTalk] AllRFCables.com? (score: 1)
Author: Roger <roger@rogerhalstead.com>
Date: Sun, 16 Jan 2011 22:13:06 -0500
At 95 cents per foot or 78 cents per foot in 500 foot lots the price is good with LMR-600 now running about $1.40 to $1.50 a foot. YMMV depending on vendors. HOWEVER it's the "equivalent" statement t
/archives//html/Towertalk/2011-01/msg00257.html (8,564 bytes)

16. Re: [TowerTalk] Tower Paint (score: 1)
Author: Roger <roger@rogerhalstead.com>
Date: Tue, 18 Jan 2011 04:37:40 -0500
It depends on whether the tower will see a lot of climbing or not. A good quality house paint should be fine for a static installation. The 45G and 25G here have and will see a lot of climbing and la
/archives//html/Towertalk/2011-01/msg00278.html (9,762 bytes)

17. Re: [TowerTalk] Yaesu rotator bolt spacing? (score: 1)
Author: Roger <roger@rogerhalstead.com>
Date: Tue, 18 Jan 2011 19:18:02 -0500
IF you already have the rotator you can make a template for drilling the holes if need be. Using cardboard (like the back off a tablet) or even a plastic sheet protector (this may take a little pract
/archives//html/Towertalk/2011-01/msg00286.html (8,401 bytes)

18. Re: [TowerTalk] Relay Wanted (score: 1)
Author: Roger <roger@rogerhalstead.com>
Date: Tue, 18 Jan 2011 19:22:41 -0500
Think he'd trade me a new Yaesu 5000MP even up? I *might* use it some day on the old Hallicrafters stations<:-)) It is after all an original. Oops, I just noticed that 13 or 24VDC coil. Mine's 110VAC
/archives//html/Towertalk/2011-01/msg00287.html (7,637 bytes)

19. Re: [TowerTalk] Towable towers available from the government (score: 1)
Author: Roger <roger@rogerhalstead.com>
Date: Fri, 16 Aug 2013 17:06:10 -0400
When I was an instrument tech, excess "stuff" went into a pile and they'd auction it off a couple times a year to employees only. Potential liability became an issue some time back and I believe the
/archives//html/Towertalk/2013-08/msg00414.html (12,197 bytes)

20. [TowerTalk] Antenna Gain and Reality (score: 1)
Author: Roger <roger@rogerhalstead.com>
Date: Thu, 11 Dec 2014 19:48:30 -0500
There are several absolutes in antenna gain and many probably, might, maybe, could be attributes. The two absolutes are the 2.1 db dipole to Isotropic source (I've been a ham since 61 and the books h
/archives//html/Towertalk/2014-12/msg00141.html (9,790 bytes)


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