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Total 896 documents matching your query.

301. Re: [TowerTalk] Cleaning inside tubing (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Mon, 2 Jan 2006 23:25:06 -0000
I'm not sure of the construction on the xm240 but the 40-2cd had a common problem that sounds like that. They used a sheet metal screw to hold the wire from the loading coil to the element and then p
/archives//html/Towertalk/2006-01/msg00019.html (13,187 bytes)

302. [RFI] bpl seminar (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Fri, 27 Jan 2006 19:18:52 -0000
Want to learn more about BPL? Here is a good chance in Western Massachusetts. Includes presentation by Ed Hare of the ARRL. IEEE Berkshire Section Power Chapter Presents Seminar on Broadband Over Pow
/archives//html/Towertalk/2006-01/msg00552.html (8,659 bytes)

303. Re: [TowerTalk] Fibreglass rod sources? (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Fri, 27 Jan 2006 20:52:04 -0000
Just get smaller rod that fits inside the legs, that should be plenty strong enough. Or get fiberglass tube with an ID that matches the leg OD. I did that for some 48' loaded verticals some years ago
/archives//html/Towertalk/2006-01/msg00554.html (8,049 bytes)

304. Re: [TowerTalk] lightning and insulated elements.. (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sat, 11 Feb 2006 18:32:37 -0000
You are mixing up a couple things... 'cosmic rays from a strike' has nothing to do with how strokes occur. There is some evidence for very large strokes causing enough of a field to cause x-rays and
/archives//html/Towertalk/2006-02/msg00147.html (12,304 bytes)

305. Re: [TowerTalk] lightning and insulated elements.. (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sat, 11 Feb 2006 20:24:13 -0000
Unfortunately that doesn't match up with well know and published information about lightning. The development of the stepped leader has been tracked using vhf triangulation techniques to generate 3d
/archives//html/Towertalk/2006-02/msg00151.html (14,474 bytes)

306. Re: [TowerTalk] Humongous Slingshot (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sat, 11 Feb 2006 20:31:47 -0000
Too small... use one of these and you can spool out the wire yourself as you fly over the trees! http://kwc.org/blog/archives/2005/2005-09-05.mythbusters_border_slingshot.ht ml#more David Robbins K1T
/archives//html/Towertalk/2006-02/msg00152.html (8,272 bytes)

307. [TowerTalk] new yaesu rotor failure mechanism (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Fri, 17 Feb 2006 19:21:27 -0000
Well, while powering up today for the weekend contest one of my Yaesu rotor control box indicators failed to turn. So I pulled out one of the spare boxes and plugged that in... unfortunately when I t
/archives//html/Towertalk/2006-02/msg00227.html (8,261 bytes)

308. Re: [TowerTalk] new yaesu rotor failure mechanism (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Fri, 17 Feb 2006 23:10:43 -0000
Sounds like something pretty small for either a vacuum or anything in a car. I was thinking maybe more like a hobby shop for robot experimenters or miniature car models. And I don't need it for the c
/archives//html/Towertalk/2006-02/msg00231.html (10,361 bytes)

309. Re: [TowerTalk] Fw: CATV Hardline: connectors? (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Mon, 20 Feb 2006 21:38:15 -0000
My book has several examples of plumbing store hardline fittings. You can do just about anything up to 1" stuff with off the shelf fittings and a barrel connector. I prefer to use reducers rather tha
/archives//html/Towertalk/2006-02/msg00287.html (23,283 bytes)

310. [TowerTalk] yaesu rotor control box belt fix (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Fri, 24 Feb 2006 21:17:51 -0000
For those who may be interested, or who later search the archives, the replacement o-ring I found for the g-1000sdx box (should also be the same for g-2700sdx and g-2800sdx at least) is a 1-1/2x1-3/8
/archives//html/Towertalk/2006-02/msg00354.html (7,464 bytes)

311. Re: [TowerTalk] Will Resonance Go Up or Down? (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Mon, 13 Mar 2006 21:51:09 -0000
I would expect it to go up in frequency. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net _____________________________
/archives//html/Towertalk/2006-03/msg00262.html (8,526 bytes)

312. Re: [TowerTalk] remote antenna switch (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Mon, 13 Mar 2006 21:54:35 -0000
None of the 8 rcs-8v's that I have in use grounds the unused ports by default. You can ADD a jumper to the relay box for each port you want to ground when it is not selected, which I have done when
/archives//html/Towertalk/2006-03/msg00263.html (10,649 bytes)

313. Re: [TowerTalk] remote antenna switch (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Mon, 13 Mar 2006 21:59:18 -0000
of course for yagi's built with certain types of matches there is no need for either of these. leaving an open ended feedline will also have the same effect depending on the length of the line. you
/archives//html/Towertalk/2006-03/msg00264.html (9,900 bytes)

314. Re: [TowerTalk] AOL deliveries, etc. (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Fri, 24 Mar 2006 13:36:21 -0000
Normally all failures like that will have more information in the header about why it failed. Most isp's have someone who can help you figure out what the problem is if you can't read headers. David
/archives//html/Towertalk/2006-03/msg00488.html (9,135 bytes)

315. Re: [TowerTalk] GIN POLE (trivia) (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sat, 1 Apr 2006 14:35:24 -0000
The ONLY safe use is for moving objects weighing less than the pole's rating straight up or down the side of the tower. Using it to handle something that is being pulled sideways out away from the to
/archives//html/Towertalk/2006-04/msg00006.html (9,933 bytes)

316. [TowerTalk] antenna switch control box? (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sun, 2 Apr 2006 12:08:12 -0000
I am looking at the new mfj rcs-12c remote switch controller. It is an 8 pushbutton box that controls up to 8 relays or bcd output, has built in band decoding with programmable buttons, last antenna
/archives//html/Towertalk/2006-04/msg00032.html (7,480 bytes)

317. Re: [TowerTalk] Replacement lamps for Yaesu rotor controller (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Wed, 5 Apr 2006 23:51:13 -0000
I could use a few of those myself.... after doing some searching the closest I can find look like: Part 9134 at: http://froogle.google.com/froogle?q=lamp+wire+axial+12v&hl=en&lr=&sa=N&tab=f f&sa=X&oi
/archives//html/Towertalk/2006-04/msg00120.html (9,455 bytes)

318. [TowerTalk] 40m4lldd on ring rotor (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Fri, 14 Apr 2006 19:51:30 -0000
Has anyone put a 40m4lldd on a tic ring rotor?? If so, please contact me off the list for a question about mounting and the phasing line. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http:/
/archives//html/Towertalk/2006-04/msg00235.html (7,004 bytes)

319. Re: [TowerTalk] Was:Website Alarms Public Now:Tinfoil Hats for sale (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Thu, 18 May 2006 20:50:15 -0000
Don't get started on tin foil hats until you read this: http://people.csail.mit.edu/rahimi/helmet/ David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluster node: 145.69M
/archives//html/Towertalk/2006-05/msg00346.html (10,896 bytes)

320. [TowerTalk] towers as works of art! (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Wed, 24 May 2006 23:41:43 -0000
Maybe not exactly radio towers, but interesting anyway. http://www.insulators.com/pictures/?id=153051580 David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluster node: 1
/archives//html/Towertalk/2006-05/msg00436.html (7,082 bytes)


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