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21. Re: [TowerTalk] Coax loop (score: 1)
Author: "James C. Garland" <4cx250b@muohio.edu>
Date: Tue, 17 Jul 2007 17:45:26 -0600
Your question is ambiguous, Charles. It's unclear what loop you're talking about. If it's the rotator loop, then it should be taped to the mast along several inches (minimum), and then taped again to
/archives//html/Towertalk/2007-07/msg00686.html (10,177 bytes)

22. Re: [TowerTalk] Coax loop (score: 1)
Author: "James C. Garland" <4cx250b@muohio.edu>
Date: Tue, 17 Jul 2007 20:14:15 -0600
The coax will go through the 3 coax arms up to the boom. So just secure the coax back along the boom and leave some slack in it and secure it at the top coax arm? The antenna is 1 foot above the top
/archives//html/Towertalk/2007-07/msg00694.html (9,488 bytes)

23. Re: [TowerTalk] [wwdxc] RG213 Woes (score: 1)
Author: "James C. Garland" <4cx250b@muohio.edu>
Date: Thu, 19 Jul 2007 12:29:50 -0600
I found the same at my local Home Depot. Evidently Plymouth 85 is supposed to correspond to Scotch 88. It's an all-weather tape, 8.5 mils thick. The question, of course, is how it holds up? It's chea
/archives//html/Towertalk/2007-07/msg00733.html (9,003 bytes)

24. Re: [TowerTalk] Coax loop (score: 1)
Author: "James C. Garland" <4cx250b@muohio.edu>
Date: Thu, 19 Jul 2007 20:06:20 -0600
Taping to the boom is fine. I tape to the mast when the boom is not near the tower but, e.g., ten feet above it. I don't like to have a lot of unsupported cable hanging up there, blowing around in th
/archives//html/Towertalk/2007-07/msg00772.html (10,758 bytes)

25. Re: [TowerTalk] Quiet antenna rotators? (score: 1)
Author: "James C. Garland" <4cx250b@muohio.edu>
Date: Mon, 30 Jul 2007 18:52:43 -0600
I have a C.A.T.S. DPU-1800d rotor, which is a drop-in replacement for a CDR Ham-IV or T2X. It has twice the power of a T2X, but uses a DC motor with no clunky(i.e., noisy) brake, and is very quiet. I
/archives//html/Towertalk/2007-07/msg01125.html (8,871 bytes)

26. Re: [TowerTalk] guy levels ? (score: 1)
Author: "James C. Garland" <4cx250b@muohio.edu>
Date: Tue, 21 Aug 2007 20:07:55 -0600
...If you are only using the top of your tower, I would place the guys at 30', 60' and 90'. John KK9A ** I was under the impression that one shouldn't guy a tower at regular spacings, because the win
/archives//html/Towertalk/2007-08/msg00585.html (7,403 bytes)

27. Re: [TowerTalk] Starting the tower tilting (score: 1)
Author: "James C. Garland" <4cx250b@muohio.edu>
Date: Wed, 5 Sep 2007 07:04:49 -0600
I just tie a 100ft rope about 18 ft up the side of the (retracted) tower and then pull on it to get the tower started tipping. I have to pull as hard as I can, but the method works fine. The tower we
/archives//html/Towertalk/2007-09/msg00182.html (10,931 bytes)

28. Re: [TowerTalk] Loose rotor bolts (score: 1)
Author: "Dr. James C. Garland" <4cx250b@muohio.edu>
Date: Mon, 29 Oct 2007 07:46:03 -0600
I'm not a high-volume user, but have never had a single failure with Loctite 242... and that does include rotor bolts. 242 is one of the 'reversible' grades of Loctite that will lock firmly against v
/archives//html/Towertalk/2007-10/msg00821.html (8,860 bytes)

29. Re: [TowerTalk] Which Tower (score: 1)
Author: "Dr. James C. Garland" <4cx250b@muohio.edu>
Date: Sun, 18 Nov 2007 10:35:54 -0700
Ron, If you're worried about swaying, you might consider a Tashjian Sky Needle telescoping tubular tower, model TM-358. (http://www.tashtowers.com/pdf/TM358-01.pdf ) It's pricier than the MA-550, but
/archives//html/Towertalk/2007-11/msg00384.html (7,870 bytes)

30. Re: [TowerTalk] Ameritron RCS-10 Coax Switch (score: 1)
Author: "Dr. James C. Garland" <4cx250b@muohio.edu>
Date: Mon, 26 Nov 2007 07:20:05 -0700
I believe the resistors are to discharge static electricity on antennas that are not grounded to DC. Without it voltages in excess of 1 kV can build up on the coax inner conductor. The resistance (10
/archives//html/Towertalk/2007-11/msg00488.html (7,830 bytes)

31. Re: [TowerTalk] Question re Sky Needle rotor cage (Update) (score: 1)
Author: "Dr. James C. Garland" <4cx250b@muohio.edu>
Date: Wed, 5 Dec 2007 07:15:52 -0700
Many thanks to all you who wrote with suggestions about the chain drive on my Tashjian Sky-Needle tower. However, as it turned out the problem I'm having isn't the rotator chain drive. I went up on t
/archives//html/Towertalk/2007-12/msg00084.html (9,075 bytes)

32. Re: [TowerTalk] Line Noise (score: 1)
Author: "Dr. James C. Garland" <4cx250b@muohio.edu>
Date: Thu, 13 Dec 2007 07:26:25 -0700
That's a great story, Denny. Sounds like the guy didn't know much, but was willing to learn and had a "can do" attitude. Jim W8ZR _______________________________________________ _____________________
/archives//html/Towertalk/2007-12/msg00215.html (6,621 bytes)

33. [TowerTalk] RF Relay QUestion (score: 1)
Author: "Dr. James C. Garland" <4cx250b@muohio.edu>
Date: Sat, 15 Dec 2007 22:09:21 -0700
Does anybody know what kind of open frame relays Array Solutions (or other companies that make remote RF switches) are using?? I?d like to find a relatively inexpensive open frame relay that can hand
/archives//html/Towertalk/2007-12/msg00242.html (7,111 bytes)

34. Re: [TowerTalk] RF Relay Question (score: 1)
Author: "Dr. James C. Garland" <4cx250b@muohio.edu>
Date: Sun, 16 Dec 2007 07:32:51 -0700
Gang, Thanks to those replying to my question about RF relays. Many helpful suggestions. My application is for an indoor switching unit to select HF linear amplifiers. The relays are for an intermitt
/archives//html/Towertalk/2007-12/msg00250.html (8,824 bytes)

35. Re: [TowerTalk] RF Relay Question (score: 1)
Author: "Dr. James C. Garland" <4cx250b@muohio.edu>
Date: Mon, 17 Dec 2007 07:06:53 -0700
In this discussion, a number of guys have suggested using PCB power relays for switching 1500W of RF. For example, the Tyco RTB14012F (http://catalog.tycoelectronics.com/TE/bin/TE.Connect?C=1 <http:/
/archives//html/Towertalk/2007-12/msg00258.html (10,222 bytes)

36. Re: [TowerTalk] Tower Update (score: 1)
Author: "Dr. James C. Garland" <4cx250b@muohio.edu>
Date: Sat, 29 Dec 2007 19:06:13 -0700
Hi Bob, Congrats on your good fortune on getting your tower hole dug. Wish I had a friendly neighbor with a back hoe! That said, it is generally a bad idea to build a box for the base and then backfi
/archives//html/Towertalk/2007-12/msg00436.html (12,098 bytes)

37. Re: [TowerTalk] RFI Identification (score: 1)
Author: "Dr. James C. Garland" <4cx250b@muohio.edu>
Date: Tue, 22 Jan 2008 07:52:25 -0700
Dave, I've used two brands of dog containment units, including the "Invisible Fence" type, and both transmit at about 100kHz. To diagnose broken underground wires, I hook a signal generator up to th
/archives//html/Towertalk/2008-01/msg00465.html (9,061 bytes)

38. Re: [TowerTalk] rotor chain drive problem (score: 1)
Author: "Dr. James C. Garland" <4cx250b@muohio.edu>
Date: Sun, 7 Dec 2008 16:35:58 -0700
Many thanks to all of you who wrote with suggestions on fixing my loose rotor chain. Nearly everybody suggested replacing the chain, rather than trying to take out links. The reason is that if the ch
/archives//html/Towertalk/2008-12/msg00188.html (8,270 bytes)

39. Re: [TowerTalk] Cable management on crankup towers (score: 1)
Author: "Jim Garland" <4cx250b@muohio.edu>
Date: Wed, 14 Jan 2009 09:26:23 -0700
I hope people post their suggestions to the reflector. I've got the same issues. I have a telescoping tubular crankup (70' Sky Needle), which has three coax arms. While it might seem that draping the
/archives//html/Towertalk/2009-01/msg00248.html (9,573 bytes)

40. [TowerTalk] DX Engineering Beverage Question (score: 1)
Author: "Jim Garland" <4cx250b@muohio.edu>
Date: Wed, 15 Apr 2009 10:41:49 -0600
Hi Gang, Now that Spring is here (more or less), I'm finally getting around to installing beverage antennas and wanted to solicit suggestions and comments. I'm thinking of using the DX Engineering bi
/archives//html/Towertalk/2009-04/msg00484.html (7,246 bytes)

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