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21. [Towertalk] Thanks for plexiglass answers (score: 1)
Author: mark@concertart.com (Mark Beckwith)
Date: Sun, 15 Sep 2002 19:31:04 -0500
I think I may have gotten all the plexiglass/lexan advice I need at this point. Thanks to everyone for responding. Mark, N5OT
/archives//html/Towertalk/2002-09/msg00526.html (6,310 bytes)

22. [Towertalk] McMaster-Carr Fiberglass Rod (score: 1)
Author: mark@concertart.com (Mark Beckwith)
Date: Tue, 20 Aug 2002 16:29:07 -0500
Hello friends, a quick question. When Fiberglass Rod came up a couple months ago, somebody referred us to McMaster Carr. I need some for an antenna project. Their listing says that their 1-1/4" fiber
/archives//html/Towertalk/2002-08/msg00580.html (7,979 bytes)

23. [Towertalk] ICE Rotator cable lightning protector (score: 1)
Author: mark@concertart.com (Mark Beckwith)
Date: Tue, 20 Aug 2002 16:35:03 -0500
I am looking at a photo of an ICE rotator line suppressor. Do these things have 8 ins and 8 outs? It looks like 4 ins and 4 outs to me (8 screw terminals total). What am I missing? Mark, N5OT
/archives//html/Towertalk/2002-08/msg00581.html (6,750 bytes)

24. [Towertalk] THANKS (score: 1)
Author: mark@concertart.com (Mark Beckwith)
Date: Tue, 20 Aug 2002 19:39:42 -0500
Thanks to everyone who responded, I got excellent answers to both questions. I now understand about the terminals on the lightEning protectors, and I also found what from multiple reports is the best
/archives//html/Towertalk/2002-08/msg00591.html (6,956 bytes)

25. [Towertalk] Metal saw (score: 1)
Author: mark@concertart.com (Mark Beckwith)
Date: Wed, 28 Aug 2002 11:18:10 -0500
Hey guys, I got a new digital camera, so I will be posting photos from N5OT until the novelty wears off. I recall a discussion a while ago about cutting aluminum. I had to cut a 3" x .125" boom this
/archives//html/Towertalk/2002-08/msg00764.html (6,700 bytes)

26. [TowerTalk] Interesting problem (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Sat, 11 Oct 2003 17:37:14 -0500
Hello sages of RF wisdom. I have one for you. Not being an RF engineer, the solution escapes me: I have two identical antennas on one tower at different heights. They each have feedlines coming down
/archives//html/Towertalk/2003-10/msg00247.html (7,170 bytes)

27. Re: [TowerTalk] Using 3" Copper strap (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Sat, 18 Oct 2003 06:34:48 -0500
This post got my attention. I have 15 ground rods to do. N5OT is definitely living on borrowed time at this point. the Any sense of the pros/cons of this approach from the ground gurus? if it's a co
/archives//html/Towertalk/2003-10/msg00394.html (8,317 bytes)

28. [TowerTalk] Ground rod driving tool (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Sat, 18 Oct 2003 06:43:26 -0500
Speaking of that, does anyone have a SDS-chuck ground-rod-driving-tool I could borrow to do this? (I've got the hammerdrill but I imagine there must be some tool which would aid in driving ground ro
/archives//html/Towertalk/2003-10/msg00395.html (7,769 bytes)

29. Re: [TowerTalk] Rohn 25G Harware (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Sun, 19 Oct 2003 11:28:52 -0500
Right, but they're not stainless. But they ARE original equipment and are the manufacturers spec. Mark, N5OT you down Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questi
/archives//html/Towertalk/2003-10/msg00410.html (9,105 bytes)

30. Re: [TowerTalk] Rohn 25G Hardware (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Mon, 20 Oct 2003 07:56:06 -0500
5 And I used the same experiment to demonstrate that SS bolts shear. I still have the bolts. The failure point, BTW, was a drop forged eyebolt bolted into a concrete parapet horizontally, with the g
/archives//html/Towertalk/2003-10/msg00426.html (7,539 bytes)

31. Re: [TowerTalk] Site Grounding (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Tue, 21 Oct 2003 10:41:59 -0500
expensive. Does it make sense to bury some length of flashing instead of driving a rod, then? Is depth an Mark, N5OT when exposed. As others have pointed out, corroded braid grounding system. that u
/archives//html/Towertalk/2003-10/msg00476.html (12,406 bytes)

32. Re: [TowerTalk] Site Grounding (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Tue, 21 Oct 2003 10:44:07 -0500
...uh, "issue?" This one got away before I finished typing. I hate it when that Mark, N5OT _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers",
/archives//html/Towertalk/2003-10/msg00477.html (8,340 bytes)

33. [TowerTalk] winch suppliers? (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Thu, 6 Nov 2003 21:58:02 -0600
Does anyone have suggestions for winches? I'd like to figure out if it makes more sense to just permanently mount a cable winch at the bottom of the tower for routine raising/lowering of yagis and ot
/archives//html/Towertalk/2003-11/msg00194.html (7,074 bytes)

34. Re: [TowerTalk] K6STI YO / AO Programs? (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Sun, 9 Nov 2003 21:06:50 -0600
I'll throw my two cents in about K6STI and his antenna programs. I have been using YO for about 15 years to design everything I ever built for anybody. Every yagi I have built using YO has worked per
/archives//html/Towertalk/2003-11/msg00300.html (10,158 bytes)

35. Re: [TowerTalk] Crank-up won't crank (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Fri, 14 Nov 2003 17:52:01 -0600
Inexcusable overgeneralized cheap shot, bud. There are plenty of crank-ups out there which provide trouble-free service for decades. Mark, N5OT _______________________________________________ See: h
/archives//html/Towertalk/2003-11/msg00415.html (7,343 bytes)

36. [TowerTalk] Copper (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Mon, 17 Nov 2003 18:27:58 -0600
Regarding the 1.5" wide copper strap that PolyPhaser et al recommend for interconnecting your ground rods - how thin can I get away with? That stuff's exPENsive! Anybody have any luck finding this in
/archives//html/Towertalk/2003-11/msg00469.html (6,824 bytes)

37. Re: [TowerTalk] Copper (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Mon, 17 Nov 2003 21:22:07 -0600
Well, okay. Thanks Bill (and boy were you loud in the SS). So, how overkill is all that PolyPhaser reading I've been doing? Seems like 15' wouldn't go very far in their scenario - what with 3 radial
/archives//html/Towertalk/2003-11/msg00473.html (8,226 bytes)

38. Re: [TowerTalk] On the phase shift in current between ends of a coil (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Sun, 23 Nov 2003 08:01:19 -0600
Phase Shift? This thread would have made me cross-eyed if I had studied it so I have not been following it. Nevertheless this excerpt caught my eye: I like to use AO/YO to design yagis, but I needed
/archives//html/Towertalk/2003-11/msg00555.html (9,072 bytes)

39. [TowerTalk] working alone (was "climbing safety") (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Wed, 26 Nov 2003 12:27:03 -0600
Golly, I have been giving this some thought, too, for the past 24 hours. Yesterday I was getting an antenna ready to go up for CQWW and had a stupid mishap which resulted in a bash (with bleeding) to
/archives//html/Towertalk/2003-11/msg00602.html (10,405 bytes)

40. Re: [TowerTalk] working alone (was "climbing safety") (score: 1)
Author: "Mark Beckwith" <mark@concertart.com>
Date: Wed, 26 Nov 2003 12:53:29 -0600
Not so easy; the station is a 20 minute drive away from home and she's generally not available at the times I do the work. There may be a bargain to be had there, though. We'll see if she brings it
/archives//html/Towertalk/2003-11/msg00606.html (9,212 bytes)


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