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21. [TowerTalk] ROHN 65-G where do we get 200' of it.. + mating gin-pole ? (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Wed, 17 Feb 2010 05:10:07 -0800; A buddy of mine needs 190-200' of Rohn 65-G.. and pretty soon. He would like to use the 10' sections , and not the 20's... if at all possible. The plan was to use 3-4 x KX0G rings + KX0G base rotor.; /archives//html/Towertalk/2010-02/msg00446.html (9,482 bytes)
22. [TowerTalk] 4 x TIC rings for sale, 1002D (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Thu, 18 Feb 2010 00:20:11 -0800; four TIC Ring rotors listed http://swap.qth.com/c_rotators.php here. This may interest some folks later... VE7RF, _______________________________________________ _____________________________________; /archives//html/Towertalk/2010-02/msg00455.html (6,928 bytes)
23. [TowerTalk] Thrust bearing options for HDX-689 (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Thu, 18 Feb 2010 02:55:35 -0800; I'd like to know how the top thrust bearing is configured on the US Tower HDX-689. Specifically, can a 2" thrust bearing set up be swapped out for a 2 7/8" bearing ?? I'd prefer to use a 2.875" thrus; /archives//html/Towertalk/2010-02/msg00457.html (7,407 bytes)
24. [TowerTalk] Fractal Antenna's (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Sat, 20 Feb 2010 03:02:51 -0800; Some time back there was an article in QST about Fractal Antennas and I believe they used one on 10 meters. So far, searches find listings, but the pages have been blank. They'd be a limited space an; /archives//html/Towertalk/2010-02/msg00498.html (7,166 bytes)
25. [TowerTalk] 25 G (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Wed, 24 Feb 2010 01:17:46 -0800; I think you missed their point. Even if you put up 30 ft, getting permission NOW for more is prudent. Not only does it provide for later changes, you can always tell your neighbor that you stopped sh; /archives//html/Towertalk/2010-02/msg00534.html (7,412 bytes)
26. [TowerTalk] frequent crank up coax recommendations (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Sat, 27 Feb 2010 05:45:36 -0800; I've got a 30ft three section crankup (AB1342) that I'll be putting up this spring. It will likely be cranked up and down nightly with a hexbeam on top. I was thinking of RG8x for its flexibility for; /archives//html/Towertalk/2010-02/msg00638.html (8,108 bytes)
27. [TowerTalk] Rotator loops. (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Sat, 27 Feb 2010 05:57:43 -0800; I notice that typical ham rotator loops involve an unsupported loop that is perpendicular to the mast, and attached at top and bottom. It seems to me that this means a lot of flexing through 360 degr; /archives//html/Towertalk/2010-02/msg00641.html (7,900 bytes)
28. [TowerTalk] Freqent crank-up tower recmmendation (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Sun, 28 Feb 2010 15:29:21 -0800; Depends... If you are talking about a mast with the coax spiraled around it like a coiled spring it'll work just fine. around the tower itself... much less the mast on top. Why not just use the corre; /archives//html/Towertalk/2010-02/msg00698.html (9,760 bytes)
29. [TowerTalk] Budget 4-Pack (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Tue, 2 Mar 2010 19:16:21 -0800; Barry, Two DPDT relays for each antenna - one for each rig. Activating a relay by Rig A with one set of contacts disables the other rig from being able to activate the same relay for the same antenna; /archives//html/Towertalk/2010-03/msg00019.html (10,453 bytes)
30. [TowerTalk] OR-2800 replacement clamp for 2" mast. (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Wed, 3 Mar 2010 04:35:15 -0800; I see that Steve, K7LXC, makes a replacement clamp for the OR-2800 rotor. Listed under Misc.. on his excellent website. Has anyone used these before ? It appears the clamp just bolts to the existing; /archives//html/Towertalk/2010-03/msg00024.html (9,425 bytes)
31. [TowerTalk] OR-2800 motor.. DC vs AC ? (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Wed, 3 Mar 2010 04:47:42 -0800; I have 2 of these OR-2800 rotor's. The original one has the AC motor, and has never been used. The 2nd one I bought used, and am 99% sure it has the DC motor in it. I Dunno if the 2 x mating controll; /archives//html/Towertalk/2010-03/msg00025.html (8,421 bytes)
32. [TowerTalk] 20m yagi with dual de els. (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Tue, 9 Mar 2010 19:45:01 -0800; Thanks for feedback Dave, Was there a big difference between the 5 or 6 el ???? Ok, about the bandwidth of dual driven. 73 LA6FJA Rag across the band. 6 -els on a 44'-48' boom. The swr / F/R, gain pa; /archives//html/Towertalk/2010-03/msg00074.html (7,703 bytes)
33. [TowerTalk] MF-259B (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Mon, 15 Mar 2010 00:27:17 -0700; Kostas: The MFJ 259 has measures many functions. It measures just about all transmission line equation parameters and the alterations caused by loads - antennas. Here's its parameter list and how to; /archives//html/Towertalk/2010-03/msg00247.html (8,047 bytes)
34. [TowerTalk] Prop pitch motor. (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Mon, 15 Mar 2010 00:47:07 -0700; Handy to remember.. AWG 10 wire is about 0.1" in diameter and 1 ohm/1000 ft. For every 3 gauges, the resistance doubles. For every 10 gauges, the resistance is x10. So.. 200 ft of AWG 10 (up and back; /archives//html/Towertalk/2010-03/msg00248.html (8,382 bytes)
35. [TowerTalk] prop pitch motor power (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Wed, 17 Mar 2010 07:06:53 -0700; Date: Wed, 17 Mar 2010 00:02:23 EDT From: NPAlex@aol.com Subject: [TowerTalk] Prop Pitch motor power There were several good responses to the question below - I have been using a prop pitch motor rot; /archives//html/Towertalk/2010-03/msg00302.html (9,098 bytes)
36. [TowerTalk] 2" masts.. an eye opener ! (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Wed, 17 Mar 2010 23:04:17 -0700; hi Ted, you can find it at _www.texastowers.com_ (http://www.texastowers.com) . Click on the on line catalog button and select steel masts. 73, Gerald K5GW http://thebont.com/spreadsheets/AnalysisOfA; /archives//html/Towertalk/2010-03/msg00329.html (10,532 bytes)
37. [TowerTalk] 1.9" masts (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Thu, 18 Mar 2010 21:54:32 -0700; For years I had a 1.5 with a 1.25 telescoped inside and welded on both IE: it's own riser, OR should you terminate the pair of truss lines on the mast ?? moment would be right at the boom to mast pla; /archives//html/Towertalk/2010-03/msg00359.html (7,583 bytes)
38. [TowerTalk] 2" OD pipe.. again (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Thu, 18 Mar 2010 22:29:44 -0700; http://www.rogerhalstead.com/ham_files/Tower29.htm shows a tribander at 100', 7L 6-meter Yagi at 115 and a 14' cross boom at 130' holding a pair of 11L on 440 and pair of 12L 144. That all on 2" sche; /archives//html/Towertalk/2010-03/msg00360.html (9,608 bytes)
39. [TowerTalk] Drill bits (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Wed, 24 Mar 2010 01:38:06 -0700; Hi all, I don't know why this is so hard. I'm trying to drill out some hole on some 3/8" steel plates that I'm going to have galvanized. I bought a 13/32" drill bit and it worked great for about 10 h; /archives//html/Towertalk/2010-03/msg00483.html (11,801 bytes)
40. [TowerTalk] Drill bits (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Wed, 24 Mar 2010 21:57:53 -0700; Lard or kerosene for aluminum, cutting oil for steel. 73 Gary k4FMX in a green tin.. and comes out green. It's made for AL only. Every metal and industrial supply place in town carries it. for any pr; /archives//html/Towertalk/2010-03/msg00507.html (8,907 bytes)

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