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References: [ +from:ccc@space.mit.edu: 187 ]

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101. [Towertalk] Baked ham (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Sun, 8 Dec 2002 09:44:50 -0500; So the metal body of your car did not shield you from the strong RF field of your transmitted signal; but its interior cavity was excited with the greatest possible field-strength. Just like a microw; /archives//html/Towertalk/2002-12/msg00265.html (6,991 bytes)
102. [Towertalk] Ground Rod Pounding (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Mon, 9 Dec 2002 10:32:50 -0500; Kimo Chun, KH7U, sent me the following addition to this thread: "I also found that Erico (Products?) (the maker of "CadWeld" products which I've used to weld my rods to ground wires and tower rebar); /archives//html/Towertalk/2002-12/msg00283.html (7,367 bytes)
103. [Towertalk] Ground the coax braid on LPDA or not? (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Mon, 9 Dec 2002 16:08:47 -0500; I'm not familiar with that LPDA. Do you know _why_ its boom is isolated? I would expect that, to preserve the balance of the antenna (I'm thinking primarily of electromagnetic balance, but mass/weigh; /archives//html/Towertalk/2002-12/msg00289.html (9,920 bytes)
104. [Towertalk] Ground the coax braid on LPDA or not? (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Mon, 9 Dec 2002 17:31:31 -0500; Understood. If only he'd written "dual boom" or "booms," plural.... :-( Thanks. -Chuck, W1HIS; /archives//html/Towertalk/2002-12/msg00293.html (8,365 bytes)
105. [Towertalk] Testing Equipment? (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Thu, 12 Dec 2002 19:32:15 -0500; I don't know about many manufacturers, but I've seen it done, and participated, at a few. There's no universal answer, but typically the electronic equipment is pretty basic and the physical and mech; /archives//html/Towertalk/2002-12/msg00381.html (9,786 bytes)
106. [Towertalk] Testing Equipment? (Important Addendum) (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Thu, 12 Dec 2002 19:49:14 -0500; In my first response I neglected to mention something very important: calibration. To calibrate measurements of antenna gain, a "standard gain" antenna is used. This is an antenna whose gain is accur; /archives//html/Towertalk/2002-12/msg00382.html (7,306 bytes)
107. [Towertalk] Testing Equipment? (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Thu, 12 Dec 2002 22:24:48 -0500; Yes. That's done. Airplanes and balloons are also used. HF wavelengths are so large that it can be difficult getting out of the near field, and difficult getting the earth out of the way. So small sc; /archives//html/Towertalk/2002-12/msg00385.html (8,254 bytes)
108. [Towertalk] Preventing parasitic action of steel guy cables (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Fri, 13 Dec 2002 11:54:47 -0500; At 8:36 AM -0800 12/13/02, Richard Karlquist wrote (in response to): I agree with Richard. See my previous Towertalk posts in which I provided quantitative data. (Search the archive for "ferrite.") -; /archives//html/Towertalk/2002-12/msg00393.html (8,265 bytes)
109. [Towertalk] The Meaning of GZ (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Fri, 13 Dec 2002 22:02:24 -0500; It stands for GnuZip, a Free Software, open-source version of the proprietary Zip. See <http://www.umich.edu/~archive/msdos/compression/gnuzip/> or do a Google search. It's very widely available. -C; /archives//html/Towertalk/2002-12/msg00414.html (7,355 bytes)
110. [Towertalk] Knots (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Fri, 20 Dec 2002 14:09:04 -0500; Since my Scouting days I've always used a bowline to make a bight (i.e., a loop on the end of a line/rope), but I'm willing to learn. Can someone point us all to a web page that teaches what (e.g., a; /archives//html/Towertalk/2002-12/msg00595.html (8,589 bytes)
111. [Towertalk] Antenna Advice (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Sat, 21 Dec 2002 15:05:59 -0500; Please, all, post your advice to Towertalk, not just to Peter. I have virtually all the same questions as he. I've been wondering about the "D" (or higher) versions of Force 12 beams. These are heavi; /archives//html/Towertalk/2002-12/msg00626.html (8,458 bytes)
112. [Towertalk] Antenna Advice (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Sun, 22 Dec 2002 16:17:13 -0500; This combination (a Force 12 230/240 and a 5BA) appeals to me, too. What can anyone tell us about how properly to stack them? In particular, how far apart should they be on a single mast above a 70-f; /archives//html/Towertalk/2002-12/msg00647.html (8,690 bytes)
113. SV: [Towertalk] Antenna Advice (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Mon, 23 Dec 2002 01:57:16 -0500; Yow! A 230/240 at the top of fifteen feet of unreinforced mast?! Is that safe? What are you using for a mast? -Chuck, W1HIS; /archives//html/Towertalk/2002-12/msg00658.html (8,289 bytes)
114. [Towertalk] Disassembling A4 elements (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Tue, 24 Dec 2002 18:25:56 -0500; The best product I know for getting stuck things unstuck is called (appropriately) BreakFree CLP. I find it most often in gun stores. It wicks into cracks very well, and displaces water as WD-40 does; /archives//html/Towertalk/2002-12/msg00700.html (8,078 bytes)
115. [Towertalk] CCD Antennas (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Wed, 25 Dec 2002 21:53:25 -0500; The ARRL Antenna Compendium, Volume 3, contains two articles about CCD antennas: "The CCD Antenna -- Improved, Ready-to-Use Construction Data," by Harry Mills, W4FD, and Gene Brizendine, W4ATE, on pa; /archives//html/Towertalk/2002-12/msg00739.html (7,179 bytes)
116. [Towertalk] Space Saver Dipoles (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Mon, 30 Dec 2002 15:30:31 -0500; The best way to answer your question is by modeling via NEC-4, or at least NEC-2. The radiation resistance of an antenna that short is very very low, so you must to work really hard to reduce the los; /archives//html/Towertalk/2002-12/msg00786.html (9,021 bytes)
117. [Towertalk] re water pipe ground (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Tue, 31 Dec 2002 15:47:06 -0500; Really the best advice, as someone has already written in different words, is to use a balanced antenna with a balanced feedline, so that the net RF current flowing into the shack is zero. It's fine; /archives//html/Towertalk/2002-12/msg00795.html (8,395 bytes)
118. [Towertalk] re water pipe ground (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Tue, 31 Dec 2002 16:40:18 -0500; Of course there's no way for me to be sure without coming to your station and experimenting, but the fact that you heard your CRT monitor suggests that noise from it is being conducted to your antenn; /archives//html/Towertalk/2002-12/msg00797.html (8,444 bytes)
119. [Towertalk] SteppIR (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Fri, 1 Nov 2002 09:29:55 -0500; If the (conducting) elements are retracted completely in to the boom, then the pulse delivered to the linear amp, RX, etc., through the feedline from a _nearby_ strike will be much smaller. I agree t; /archives//html/Towertalk/2002-11/msg00008.html (7,310 bytes)
120. [Towertalk] Balloon antenna/tower (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Sun, 3 Nov 2002 00:42:23 -0500; I've experimented with balloon-lifted antennas, and also done some modeling. The simple (without loading or phasing sections) base-fed vertical antenna having the best power gain toward the horizon h; /archives//html/Towertalk/2002-11/msg00016.html (9,116 bytes)

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