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Total 20 documents matching your query.

1. [TowerTalk] Heat Gun Recommendation (score: 1)
Author: "Craig D. Smith" <>
Date: Fri, 24 Aug 2007 10:20:09 -0600
I've had the Weller two temperature heat shrink gun for a couple years. It works well. Plenty of heat with the two settings available. It has a little 1 inch diameter sheet metal attachment that wrap
/archives//html/Towertalk/2007-08/msg00637.html (7,099 bytes)

2. [TowerTalk] Name this Antenna (score: 1)
Author: "Craig D. Smith" <>
Date: Sat, 1 Sep 2007 21:35:59 -0600
Couldn't really see much detail in the photo, Steve, but from your description it could be part of the FAA communications system. The local regional FAA center here in Longmont, CO has one just as yo
/archives//html/Towertalk/2007-09/msg00033.html (7,978 bytes)

3. [TowerTalk] CFL vs. LED bulbs (score: 1)
Author: "Craig D. Smith" <>
Date: Wed, 31 Oct 2007 17:50:53 -0600
I also look forward to when LED bulbs become inexpensive enough to compete with CFLs. They offer several advantages such as greater selection of color, eventually better efficiency and much longer li
/archives//html/Towertalk/2007-10/msg00912.html (7,634 bytes)

4. [TowerTalk] The Vertical and the Balun (score: 1)
Author: "Craig D. Smith" <>
Date: Thu, 15 May 2008 10:35:03 -0600
What you envision, Daniel, should work quite well on 80 with at most a minimal matching network at the base. Most likely you can get by without any tuning network and have less than a 2:1 SWR on the
/archives//html/Towertalk/2008-05/msg00281.html (8,233 bytes)

5. Re: [TowerTalk] Ground radial length vs. antenna height (score: 1)
Author: "Craig D. Smith" <>
Date: Wed, 27 Aug 2008 11:51:11 -0600
As others have pointed out, Rudy N6LF has done some very complete and EXCELLENT work in this area. I strongly urge anyone with an interest in vertical antennas to take a look at it. Much of it was ju
/archives//html/Towertalk/2008-08/msg00534.html (8,233 bytes)

6. [TowerTalk] 43 ft vertical - feeding and balun (score: 1)
Author: "Craig D. Smith" <>
Date: Sun, 23 Nov 2008 15:56:47 -0700
I agree that a high quality general purpose remote auto-tuner suitable for KW+ levels over a "DC to Daylight" frequency range and undefined extreme impedance loads would turn out to be a quite pricy
/archives//html/Towertalk/2008-11/msg00598.html (8,084 bytes)

7. [TowerTalk] 160 mtr vertical Query (score: 1)
Author: "Craig D. Smith" <>
Date: Tue, 30 Dec 2008 21:00:31 -0700
<> In my quest for a 160 meter antenna, I have been looking at one of <> the 43' verticals such as the DX Engineering or MFJ one. Until such <> time as I get a tower up, this route seems to be my onl
/archives//html/Towertalk/2008-12/msg00754.html (9,020 bytes)

8. [TowerTalk] Cutting aluminum (score: 1)
Author: "Craig D. Smith" <>
Date: Sat, 28 Feb 2009 13:56:49 -0700
For my antenna projects and other ham puttering I have a semi-frequent need to cut aluminum stock as well as PCB material, occasional brass, etc. I'm not talking anything really heavy duty - 1/4 inch
/archives//html/Towertalk/2009-02/msg00682.html (8,260 bytes)

9. [TowerTalk] K9AY Question (score: 1)
Author: Craig Smith <>
Date: Fri, 24 Apr 2009 17:21:46 -0600
Yes, the normal two loop K9AY has pretty broad beam widths in the forward direction, so the four directions are quite adequate. The null on the back is sharper. I think you will be happy with the sta
/archives//html/Towertalk/2009-04/msg00709.html (6,551 bytes)

10. [TowerTalk] What To Use With Rope Guys (score: 1)
Author: "Craig D. Smith" <>
Date: Thu, 30 Apr 2009 21:53:45 -0600
I assume you are referring to the junction between the rope and the antenna element. In such situations what I do is form a small loop in the antenna wire (about 1/2 inch diameter) by clamping it wit
/archives//html/Towertalk/2009-04/msg00846.html (7,542 bytes)

11. [TowerTalk] Request info on multiband vertical (score: 1)
Author: "Craig D. Smith" <>
Date: Sun, 10 May 2009 08:19:20 -0600
As you surmised, Ed, the 43 ft length is used so that the SWR isn't real terrible on the more popular bands. At 43 ft you will get compromise performance on 80, good performance on 40, 30 and 20, and
/archives//html/Towertalk/2009-05/msg00207.html (8,007 bytes)

12. Re: [TowerTalk] K9AY performance expectations/help (score: 1)
Author: "Craig D. Smith" <>
Date: Sat, 29 Aug 2009 12:04:57 -0600
Doug ... I was going to suggest the same thing as Pete - common mode isolation. I have a homebrew K9AY about 2/3 normal size due to space constraints here. It is actually disguised inside an ornament
/archives//html/Towertalk/2009-08/msg00562.html (9,099 bytes)

13. [TowerTalk] Resonating raised verticals (score: 1)
Author: "Craig D. Smith" <>
Date: Sat, 5 Dec 2009 11:37:01 -0700
I built an elevated 40 meter ground plane last year. Some of the elevated radials were near trees and my house so I was also concerned about how to get exact resonance when the length of one or more
/archives//html/Towertalk/2009-12/msg00048.html (7,742 bytes)

14. [TowerTalk] Reduced size receiving antennas (score: 1)
Author: "Craig D. Smith" <>
Date: Wed, 9 Dec 2009 09:21:32 -0700
Larry ... Yes, I recently built a 2/3 sized K9AY RX antenna and am thrilled with the results. My situation was that it needed to be completely stealth due to HOA restrictions here. Just happened to h
/archives//html/Towertalk/2009-12/msg00076.html (9,408 bytes)

15. [TowerTalk] Two elemenet Quad and baluns (score: 1)
Author: "Craig D. Smith" <>
Date: Tue, 2 Feb 2010 10:55:03 -0700
I've never built a multi-band quad, Dan, but have done several single band loops and quads. You will want a 2:1 impedance transformation at the feed point (assuming 50 ohm coax) and also a conversion
/archives//html/Towertalk/2010-02/msg00024.html (7,436 bytes)

16. Re: [TowerTalk] Baluns for RX antennas (score: 1)
Author: Craig Smith <>
Date: Mon, 23 Apr 2012 08:05:31 -0600
Yes, smaller cores can conveniently be used for RX antennas. I built up some small common mode choke assemblies for use with my Clifton Active Whip antenna. Here is what I ended up with along with so
/archives//html/Towertalk/2012-04/msg00469.html (9,544 bytes)

17. Re: [TowerTalk] Baluns for RX antennas (score: 1)
Author: Craig Smith <>
Date: Mon, 23 Apr 2012 09:15:38 -0600
I'm using an AIM 4170. Accuracy not the best at high impedances. As a rule-of-thumb, I'm comfortable with it to give meaningful measurements up to about 2 Kohms and useful relative results up to 5 Ko
/archives//html/Towertalk/2012-04/msg00472.html (8,178 bytes)

18. Re: [TowerTalk] Baluns for RX antennas (score: 1)
Author: Craig Smith <>
Date: Mon, 23 Apr 2012 13:34:19 -0600
I leave the ends of the coax open and measure across the choke with the short test leads attached to the shield at either end. Just like you would measure any inductor. The AIM will then plot Impedan
/archives//html/Towertalk/2012-04/msg00497.html (8,206 bytes)

19. Re: [TowerTalk] Interconnect Cables (score: 1)
Author: Craig Smith <>
Date: Sun, 14 Jul 2013 10:23:33 -0600
Another similar alternative that is readily available is Belden 9501. I've been using it for the past several years with good results, and it is a delight to work with. Single AWG 24 twisted pair, fo
/archives//html/Towertalk/2013-07/msg00251.html (7,197 bytes)

20. [TowerTalk] Tower climbing Boots (score: 1)
Author: Craig Smith <>
Date: Fri, 8 Aug 2014 06:10:01 -0600
Not sure most boots would have room for a quarter inch plywood insole, but no need for something this thick. A good quality commercial insole will work wonders and only costs perhaps $30. The secret
/archives//html/Towertalk/2014-08/msg00194.html (9,447 bytes)

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