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21. [TowerTalk] ZRC Clean Up? (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Sun, 14 Sep 1997 16:35:22 -0400; Contact ZRC and have them send you the MSDS (Material Safety Data Sheet) for both the cold galvanizing, and for their "XXX" cleaning compound. If they decline to provide this, contact OSHA, and ask T; /archives//html/Towertalk/1997-09/msg00345.html (8,789 bytes)
22. [TowerTalk] dB/S (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Sun, 10 Aug 1997 13:23:13 -0400; While you probably can't get your S-Meter "calibrated", I see an interesting market opening ... The calibrated digital S-meter. This device (consisting of a single chip microprocessor with at least o; /archives//html/Towertalk/1997-08/msg00378.html (8,027 bytes)
23. [TowerTalk] Maxcom Matcher info needed (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Tue, 26 Aug 1997 17:48:08 -0400; You have a lossy matching unit. Before everyone gets all cranked up about the QST x-ray expose (and the fact that the ARRL had a stolen piece of equipment ... another story) lets look at what that th; /archives//html/Towertalk/1997-08/msg00741.html (9,800 bytes)
24. [TowerTalk] NY>LA twr shipment (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Tue, 26 Aug 1997 20:50:41 -0400; Try one of the WEB search programs and look for "trucker" and "broker". I accidentally found something a couple of days ago that was a clearinghouse for independent truckers to coordinate and schedul; /archives//html/Towertalk/1997-08/msg00745.html (9,051 bytes)
25. [TowerTalk] Preventing cramps while climbing (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Wed, 2 Jul 1997 21:23:50 -0400; I will NOT be part of your ground crew! 73, Rick, WB3EXR On Tue, 1 Jul 1997 20:59:28 -0700 "Bob Wruble" <ai7b@teleport.com> writes: -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissi; /archives//html/Towertalk/1997-07/msg00099.html (7,775 bytes)
26. [TowerTalk] Figuring Noon (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Wed, 2 Jul 1997 21:44:40 -0400; You know ... I get confused with this obsession with absolute precision in pointing antennas with a 10-50 degree wide (-3dB) main lobe. What am I missing, other than the fun of calculating, calibrati; /archives//html/Towertalk/1997-07/msg00104.html (9,116 bytes)
27. [TowerTalk] anchor points (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Wed, 2 Jul 1997 20:49:43 -0400; aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaagh That's the LAST time I try to do any thinking after working overtime fixing someone else's air conditioning. 73, Slightly embarrassed, Rick, WB3EXR On Mon, 30; /archives//html/Towertalk/1997-07/msg00110.html (9,046 bytes)
28. [TowerTalk] Figuring Noon (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Sat, 5 Jul 1997 21:08:04 -0400; Sure ... however, satellite and moonbounce usually require asimuth and elevation rotors ... and I'm pretty sure it's possible to do 20 meter moonbounce, but haven't heard it being done! Point is, mos; /archives//html/Towertalk/1997-07/msg00237.html (9,455 bytes)
29. [TowerTalk] Figuring Noon (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Tue, 8 Jul 1997 17:59:51 -0400; Well, that clears things up! :) A simple way to give you real beam headings regardless of rotor/mast/boom slippage is to install a fluxgate compass on the boom of each of your multiple antennas. This; /archives//html/Towertalk/1997-07/msg00312.html (11,521 bytes)
30. [TowerTalk] Force12 EF330 More (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Mon, 28 Jul 1997 20:08:24 -0400; Good luck getting the calibration procedure from MFJ. I tried that a couple of years ago and was told that they could calibrate it for me ... for about $100.00 ! I declined, and simply noted the corr; /archives//html/Towertalk/1997-07/msg00799.html (9,629 bytes)
31. [TowerTalk] Crank-up info please... (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Wed, 04 Jun 1997 18:31:11 EDT; Several reasons come to mind: 1. Government purchase order. Until you have worked through the procurement process, you just can't understand the grief you get by "splitting" a procurement among vendo; /archives//html/Towertalk/1997-06/msg00180.html (8,479 bytes)
32. [TowerTalk] Switching 450 ohm twinlead? (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Fri, 06 Jun 1997 18:30:23 EDT; On Fri, 6 Jun 1997 10:53:23 PST henrypol2@juno.com (Henry A Pollock) writes: For the ultimate in power handling capabilities, I'd go with three-phase contactors (sometimes called starters). These pup; /archives//html/Towertalk/1997-06/msg00243.html (9,325 bytes)
33. [TowerTalk] US Towers! (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Sun, 15 Jun 1997 15:47:49 EDT; Original message, lots of extra line feeds and most of the all-caps reply deleted: Hey Joe, I'll give you $.25 for your caps-lock key. I've yet to find a font that lends to easy reading with all caps; /archives//html/Towertalk/1997-06/msg00479.html (7,914 bytes)
34. [TowerTalk] Cleaning tired aluminum tubing (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Sat, 21 Jun 1997 13:41:01 -0400; dBi ... is that decibels (imaginary)? 73, Rick, WB3EXR -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@cont; /archives//html/Towertalk/1997-06/msg00696.html (7,772 bytes)
35. [TowerTalk] tower mast installation (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Fri, 27 Jun 1997 19:03:20 -0400; That's what HiGain has done with their 4-30 MHz LPA array, with the twin tower setup. Two towers mounted side by side (maybe 3' apart) with a 6" or so mast between them, with the rotor at the base of; /archives//html/Towertalk/1997-06/msg00945.html (7,735 bytes)
36. [TowerTalk] anchor points (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Sun, 29 Jun 1997 21:28:00 -0400; Ah ... a cubic yard is 3 x 3 x 3 or 27 cubic feet. 27*.67= 18.09 cubic feet required (using your figure) 18.09/3.14=5.76 feet depth required for 1 foot diameter; 18.09/6.28=2.88 feet depth required f; /archives//html/Towertalk/1997-06/msg00990.html (8,166 bytes)
37. [TowerTalk] Fwd: Pro-67B (score: 1): Author: mainhart@juno.com (Richard T. Mainhart); Date: Thu, 08 May 1997 20:16:55 EDT; Log Periodic Arrays have a V-E-R-Y wide bandwidth as compared to Uda-Yagi arrays ... why in the world would you try to "tune" one? 73 Rick, WB3EXR -- FAQ on WWW: http://www.contesting.com/towertalkfa; /archives//html/Towertalk/1997-05/msg00244.html (7,798 bytes)
38. [TowerTalk] PL-259/N-type Connector at the Antenna (score: 1): Author: mainhart@juno.com (Richard T. Mainhart); Date: Wed, 14 May 1997 21:24:20 EDT; The Scotch 23 (self vulcanizing rubber) covered with Scotch 33 or 88 and then covered with Scotchkote is easily removed with a sharp knife. Slice through the three protective layers ... but not into; /archives//html/Towertalk/1997-05/msg00368.html (8,591 bytes)
39. [TowerTalk] Rain Static vs Feed System (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Thu, 29 May 1997 13:37:02 EDT; Maybe! If the sole discharge point is at the antenna, within the feedline, or within the receiver (including the various interconnections, switches, et. al.) then changing the feed from a DC-open to; /archives//html/Towertalk/1997-05/msg00712.html (9,025 bytes)
40. [TowerTalk] An Engineering Question (score: 1): Author: mainhart@juno.com (Rick Mainhart); Date: Thu, 29 May 1997 13:37:02 EDT; I maintained an 80' guyed tower used for an MF radio beacon in Rochester NY, and it had a similar problem ... the third set of guys wanted to be in the middle of the parking lot! The solution was an; /archives//html/Towertalk/1997-05/msg00713.html (11,607 bytes)

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