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Total 950 documents matching your query.

341. Re: [TowerTalk] Vertical antennas and lightning (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Sun, 01 Aug 2010 13:13:46 -0700
I'm no expert, but I think that's missing the point. As I understand it, the purpose of using lightning protectors and grounding everything to common points, etc is to keep everything at a common pot
/archives//html/Towertalk/2010-08/msg00016.html (10,372 bytes)

342. Re: [TowerTalk] Fall Harness-My Choice (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Fri, 13 Aug 2010 17:38:54 -0700
I have an AN Wireless HD-70 freestanding tower with the foot pegs ... slippery enough to require caution when wet, but not treacherous. I climb with a full body harness with two relatively short safe
/archives//html/Towertalk/2010-08/msg00257.html (11,559 bytes)

343. Re: [TowerTalk] Fall Harness-My Choice (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Sat, 14 Aug 2010 01:44:13 -0700
My hesitation in buying the safety cable was simply that I didn't want to trust my life to a spring gripping system I suspected I wouldn't be able to see (I've never seen one in person so I wasn't ce
/archives//html/Towertalk/2010-08/msg00265.html (11,662 bytes)

344. Re: [TowerTalk] gorilla hooks (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Sat, 14 Aug 2010 10:12:01 -0700
*http://tinyurl.com/25dns9a *I believe that Champion Radio carries a large gorilla hook as well, except made from steel. I like the lighter weight of the aluminum alloy ones, but other may have diffe
/archives//html/Towertalk/2010-08/msg00275.html (8,445 bytes)

345. Re: [TowerTalk] gorilla hooks (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Sat, 14 Aug 2010 14:37:46 -0700
I'm not sure why this is becoming so difficult .... I already stated that my gorilla hooks (three of them) are at the end of straps (heavy duty webbed ones) that attach to my full body harness. My st
/archives//html/Towertalk/2010-08/msg00288.html (9,343 bytes)

346. Re: [TowerTalk] Fall Harness-My Choice (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Fri, 20 Aug 2010 11:49:48 -0700
In my case, longer lanyards would generally cost me time rather than save it. In theory, they would allow me to climb more steps before I had to reposition them, but in practice they are more likely
/archives//html/Towertalk/2010-08/msg00447.html (10,144 bytes)

347. [TowerTalk] Homebrew Exothermic Mold (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Sat, 21 Aug 2010 09:54:53 -0700
I fabricated my own Cadweld-type mold for making ground rod connections while I was installing my tower about a year and a half ago, but I only recently uploaded the description and pictures to my we
/archives//html/Towertalk/2010-08/msg00452.html (7,956 bytes)

348. [TowerTalk] Minimum Discernible Difference (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Mon, 23 Aug 2010 11:15:46 -0700
I've added a page to my web site covering some investigations into how much difference in signal strength might be noticeable in weak signal and/or contest conditions, with several audio files includ
/archives//html/Towertalk/2010-08/msg00475.html (7,579 bytes)

349. Re: [TowerTalk] Minimum Discernible Difference (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Mon, 23 Aug 2010 13:12:16 -0700
Thanks for the feedback, Rick ... good comments. I wasn't really trying to simulate what happens in a receiver, though, because there is no way I can account for all the various receiver characterist
/archives//html/Towertalk/2010-08/msg00480.html (10,789 bytes)

350. Re: [TowerTalk] Minimum Discernible Difference (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Mon, 23 Aug 2010 14:31:27 -0700
Creeping senility is such an ugly thing .... While working outside on a project I realized I had referred to K9YC as Gary, when everyone (including me) knows his name is Jim. My sincere apologies ...
/archives//html/Towertalk/2010-08/msg00482.html (12,311 bytes)

351. Re: [TowerTalk] Full Thread Bolts (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Mon, 23 Aug 2010 23:45:34 -0700
McFeely's has a pretty wide selection of both Grade 5 and Grade 8 full thread hex bolts at reasonable prices. In the case, of 1/2-13 by 3 inches, for example, a box of 50 Grade 5 hex bolts is $31.00.
/archives//html/Towertalk/2010-08/msg00492.html (9,606 bytes)

352. Re: [TowerTalk] Fwd: Fwd: OT: Satellite Internet (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Fri, 27 Aug 2010 15:26:16 -0700
I don't understand these comments. Forget the ham radio part ... if I understand him correctly he's saying that someone (anyone) could add a couple of 24 dbi antennas to a standard 802.11 system and
/archives//html/Towertalk/2010-08/msg00579.html (13,137 bytes)

353. Re: [TowerTalk] cable locating (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Mon, 30 Aug 2010 20:29:21 -0700
This is getting sillier and sillier by the moment ... Dave AB7E _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contes
/archives//html/Towertalk/2010-08/msg00663.html (10,100 bytes)

354. Re: [TowerTalk] cable locating (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Mon, 30 Aug 2010 21:37:08 -0700
So are you going to try to claim the $1 million? If not, why not? Seems like a no-brainer if it works as reliably as you say. Dave AB7E _______________________________________________ _______________
/archives//html/Towertalk/2010-08/msg00667.html (12,802 bytes)

355. Re: [TowerTalk] Divining rods (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Tue, 31 Aug 2010 14:20:28 -0700
For years people have been quoting that old misunderstanding to justify their own unrelated irrational conclusions, but the idea that bees couldn't fly in theory was debunked at least three decades a
/archives//html/Towertalk/2010-08/msg00682.html (8,698 bytes)

356. Re: [TowerTalk] Divining rods (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Wed, 01 Sep 2010 11:01:23 -0700
That's a carelessly considered statement. Although there are of course bad practitioners who simply make mistakes, statistics itself is an extremely rigorous discipline. Wrong answers from statistics
/archives//html/Towertalk/2010-09/msg00022.html (9,394 bytes)

357. Re: [TowerTalk] Divining rods and pyramids (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Wed, 01 Sep 2010 12:32:34 -0700
Either that is the most hilariously sarcastic post I have seen in quite a while (if so, kudos to you), or it is now apparent that I have been mysteriously transported to some weird alternative univer
/archives//html/Towertalk/2010-09/msg00033.html (11,919 bytes)

358. [TowerTalk] Arrival Angles (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Wed, 08 Sep 2010 15:30:00 -0700
A friend of mine, K7HP, recently related to me some of his experiences several years ago working on a large phased array of antennas for the purpose of studying signal arrival angles in real time. Th
/archives//html/Towertalk/2010-09/msg00188.html (8,332 bytes)

359. Re: [TowerTalk] Lightning Protection Question (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Mon, 13 Sep 2010 09:46:10 -0700
Sorry to be so blunt, but that's a ridiculous distinction. A theory doesn't need to deviate from fundamental scientific principles at all, although it might indeed involve an assumption of some kind.
/archives//html/Towertalk/2010-09/msg00290.html (9,399 bytes)

360. Re: [TowerTalk] 80-m. Inverted Vee vs. Dipole Performance (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Wed, 15 Sep 2010 20:41:42 -0700
It depends upon whether you think amateur radio is fundamentally a technical hobby where science has merit, or whether you think ham radio is a fundamentally a social hobby where opinion and conjectu
/archives//html/Towertalk/2010-09/msg00373.html (11,444 bytes)


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