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References: [ +from:martin.s.ewing@gmail.com: 26 ]

Total 26 documents matching your query.

21. Re: [TowerTalk] Ham Radio family electrocuted (score: 1)
Author: Martin Ewing <martin.s.ewing@gmail.com>
Date: Tue, 13 Oct 2009 18:16:23 -0400
In my book, if there's any way your antenna or mast can fall on a power line (much less a 13 kV line), it is not a safe installation. (Whether it's day or night.) 73 Martin AA6E _____________________
/archives//html/Towertalk/2009-10/msg00179.html (13,243 bytes)

22. Re: [TowerTalk] Please remove my address from the list (score: 1)
Author: Martin Ewing <martin.s.ewing@gmail.com>
Date: Fri, 23 Oct 2009 10:24:42 -0400
You also can't have too many if you use a modern email system. If you get a free Google account (gmail.com), you get 7+ GB of storage space, and the interface is very easy to use to filter or archive
/archives//html/Towertalk/2009-10/msg00399.html (7,863 bytes)

23. Re: [TowerTalk] Radial Wires VS a wire or screen mesh (score: 1)
Author: Martin Ewing <martin.s.ewing@gmail.com>
Date: Sat, 14 Nov 2009 22:13:48 -0500
If you have a symmetric installation - a vertical on level ground with no near-by obstacles - the ground currents will be purely radial. Any wire in the circumferential direction is wasted, since no
/archives//html/Towertalk/2009-11/msg00265.html (8,989 bytes)

24. Re: [TowerTalk] Fractal Antenna's (score: 1)
Author: Martin Ewing <martin.s.ewing@gmail.com>
Date: Sat, 20 Feb 2010 13:35:28 -0500
Isn't a log-periodic antenna "fractal" in the sense that it is scale-independent over a wide range of frequencies? The newer antennas seem to be different only in that they are two-dimensional while
/archives//html/Towertalk/2010-02/msg00503.html (13,659 bytes)

25. Re: [TowerTalk] Shack wiring (score: 1)
Author: Martin Ewing <martin.s.ewing@gmail.com>
Date: Mon, 15 Mar 2010 10:47:36 -0400
As long as you observe the current limits, nothing is likely to burn up. IMO the problem is that the surge suppression will not work as effectively as it should. The suppression relies on a low-imped
/archives//html/Towertalk/2010-03/msg00260.html (11,241 bytes)

26. Re: [TowerTalk] Shack wiring (score: 1)
Author: Martin Ewing <martin.s.ewing@gmail.com>
Date: Mon, 15 Mar 2010 13:24:50 -0400
As you suggest, these standards (and especially code requirements, e.g. the rule on 8:1 "fan-out") are (IMO) basically for permanent installations done by professionals. [Would it be OK to use an 8-w
/archives//html/Towertalk/2010-03/msg00271.html (10,780 bytes)


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