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Total 11 documents matching your query.

1. Re: [TowerTalk] AEA LC-1 Isoloop (score: 1)
Author: "JAMES HEADRICK" <W3CP@CHARTER.NET>
Date: Fri, 10 Aug 2007 17:53:58 -0000
Daniel, Back in the early 1990s I used an AEA Isoloop as my 10 to 30 M antenna. Most of the time I used it horizontal at 45 ft, but it worked mounted vertical on a clothes line post. The HI Q loop is
/archives//html/Towertalk/2007-08/msg00296.html (8,871 bytes)

2. Re: [TowerTalk] Crank Up towers (score: 1)
Author: "JAMES HEADRICK" <W3CP@CHARTER.NET>
Date: Sat, 1 Sep 2007 19:06:43 -0000
Dan, Read your email and article on your club page with interest since I am going to install a US Tower TX-455 with a 3el Yagi Steppir on a 15 ft mast; this means the mast will stick up more than 10
/archives//html/Towertalk/2007-09/msg00011.html (10,323 bytes)

3. Re: [TowerTalk] FW: Crank Up towers (score: 1)
Author: "JAMES HEADRICK" <W3CP@CHARTER.NET>
Date: Mon, 3 Sep 2007 05:21:58 -0000
Larry, I would like to learn more about "hinged mast plate". Did you design and make it yourself? I have never seen one. 73, Jim w3cp _______________________________________________ _________________
/archives//html/Towertalk/2007-09/msg00078.html (8,145 bytes)

4. Re: [TowerTalk] Spread Spectrum (score: 1)
Author: "JAMES HEADRICK" <W3CP@CHARTER.NET>
Date: Mon, 31 Dec 2007 21:11:00 -0000
Using skywave propagation the optimum frequency for transmission from point A to point B can vary 5 to 1 considering time of day, season, and solar activity year. The rotatable LPA solves a lot of a
/archives//html/Towertalk/2007-12/msg00521.html (8,181 bytes)

5. Re: [TowerTalk] steppIR 30/40 addon (score: 1)
Author: "JAMES HEADRICK" <W3CP@CHARTER.NET>
Date: Thu, 21 Feb 2008 14:49:04 -0500
Ken, Although my 3el Steppir came with the 30/40 trombone looking driven element, and was assembled on the ground I'll give my opinion about installing it on the tower. Don't do it!! Drilling those h
/archives//html/Towertalk/2008-02/msg00249.html (9,106 bytes)

6. Re: [TowerTalk] inverted L tower mounting (score: 1)
Author: "JAMES HEADRICK" <W3CP@CHARTER.NET>
Date: Sat, 23 Feb 2008 16:27:14 -0500
Will, Those towers are inevitably going to be a parasitic part of your 160m antenna system. If you have a modeling capability you could look at it, or if like me you could just hang an inverted L up
/archives//html/Towertalk/2008-02/msg00279.html (9,687 bytes)

7. [TowerTalk] CURIOSITY question (score: 1)
Author: "JAMES HEADRICK" <W3CP@CHARTER.NET>
Date: Tue, 18 Mar 2008 21:51:22 -0500
A new 3el Steppir was installed and it performed properly for several days. But then during a QSO the VSWR abruptly went very high. A DC Ohm meter measurement of the coax line going to the Steppir in
/archives//html/Towertalk/2008-03/msg00354.html (7,774 bytes)

8. Re: [TowerTalk] Dipole ends (score: 1)
Author: "W3CP" <W3CP@CHARTER.NET>
Date: Fri, 29 Aug 2008 15:30:35 -0800
My approach to using trees is to get a line over a fork in a tree branch that is high (use slingshot, bow and arrow, or baseball and fish line), secure line to dipole end, pull other end down around
/archives//html/Towertalk/2008-08/msg00625.html (8,229 bytes)

9. [TowerTalk] ANTENNA ROTATOR STOPS AT PLUS AND MINUS 45 DEGREES, ANY IDEAS? (score: 1)
Author: "W3CP" <W3CP@CHARTER.NET>
Date: Sat, 15 Nov 2008 22:02:47 -0800
When getting on for the SS SSB today, I found the antenna would rotate from north to exactly NE or NW and no further. The rotator is a Yaesu G-450A that was first installed October 2007 in a crankup
/archives//html/Towertalk/2008-11/msg00395.html (7,351 bytes)

10. Re: [TowerTalk] Some spectacular views of the abandoned RussianWoodpecker antenna array (score: 1)
Author: "W3CP" <W3CP@CHARTER.NET>
Date: Thu, 18 Dec 2008 16:45:34 -0800
Bob, That antenna is a phased array. The elements are Ayzenburg wide impedance bandwidth dipoles. From those pictures I can't count how many elements high, it looks like seven or eight, and it probab
/archives//html/Towertalk/2008-12/msg00496.html (10,930 bytes)

11. Re: [TowerTalk] Some spectacular views of the abandoned RussianWoodpecker antenna array (score: 1)
Author: "W3CP" <W3CP@CHARTER.NET>
Date: Thu, 18 Dec 2008 18:34:49 -0800
Bob, I must have misunderstood your question. The elements are cage constructed dipoles, fed in the center and with an unusual support/mount structure. I believe the conducting support acts like a fo
/archives//html/Towertalk/2008-12/msg00504.html (11,887 bytes)


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