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41. [Towertalk] Guys for vertical (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Thu, 11 Apr 2002 14:12:09 -0700
The consensus seems to be dacron. I was going to build my own vertical, but went for the MFJ-1793 (I couldn't find a 1792 anywhere) to get some capability on 80 meters, as well. MFJ says to guy it, s
/archives//html/Towertalk/2002-04/msg00389.html (8,290 bytes)

42. [Towertalk] Archive Download??? (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Sun, 14 Apr 2002 12:52:28 -0700
Februrary 25 was the date that the list changed to use mailman software.
/archives//html/Towertalk/2002-04/msg00498.html (7,432 bytes)

43. [Towertalk] Prosistel Rotors (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Thu, 18 Apr 2002 09:41:20 -0700
http://www.arraysolutions.com
/archives//html/Towertalk/2002-04/msg00707.html (9,373 bytes)

44. [Towertalk] OT-Virus??? (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Thu, 25 Apr 2002 09:42:05 -0700
Tom, et al, grabs email addresses from the infected computer and then sends itself out using those addresses for the "From:" line, as well as the "To:" line. A lot of people seem to be experiencing t
/archives//html/Towertalk/2002-04/msg01041.html (11,248 bytes)

45. [Towertalk] Anyone know how to read these headers? (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Fri, 26 Apr 2002 21:35:06 -0700
This line shows that it originated from the IP address 68.64.226.171. $ host 68.64.226.171 Name: pa-steclge-u3-c4a-171.stcgpa.adelphia.net Address: 68.64.226.171 and a whois search for adelphia.net s
/archives//html/Towertalk/2002-04/msg01152.html (9,277 bytes)

46. [TowerTalk] Concrete from on-site materials (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Tue, 5 Mar 2002 13:23:03 -0800
Another option would be one of the premix places which supply a small trailer which holds ~1 yard. You can tow it (carefully) with a small truck and two people can manhandle it around to the pouring
/archives//html/Towertalk/2002-03/msg00047.html (7,550 bytes)

47. [Towertalk] Salt Water Locations (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Tue, 12 Mar 2002 14:50:39 -0800
Non-scientific observation: I'm located about 500 ft. from a narrow inlet north of me about 500 feet across. I've noticed that my horizontal wire antenna located ~20 feet above ground (sloping a bit
/archives//html/Towertalk/2002-03/msg00173.html (7,946 bytes)

48. [Towertalk] tilted LPDAs (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Wed, 20 Mar 2002 18:50:38 -0800
It has been about 35 years since I have done any work in this area, but I recall that the type of "tilted" antenna described was generally referred to simply as a log-periodic array, not a log-period
/archives//html/Towertalk/2002-03/msg00501.html (9,786 bytes)

49. [Towertalk] Near Tragedy Averted (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Fri, 29 Mar 2002 17:27:47 -0800
A hazer is a platform for the rotator, mast and antenna which rides up and down the side of the tower, pulled by cables (see http://www.glenmartin.com). I remember Charlie Biddle (W6CN?) had a simila
/archives//html/Towertalk/2002-03/msg00771.html (9,156 bytes)

50. [TowerTalk] Modeling (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Tue, 5 Feb 2002 10:12:14 -0800
Fairly simplified version: Each element radiates in both directions, but the resulting pattern is the vector sum of the radiation of all of the elements. This is dependent on the location of the elem
/archives//html/Towertalk/2002-02/msg00176.html (9,514 bytes)

51. [TowerTalk] Is the FCC sharp? Is ARRL counsel swift? (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Tue, 1 Jan 2002 19:42:26 -0800
The only reason the FCC granted preemption for satellite dishes (plus MDS and "ordinary" TV antennas) is that Congress explicitly directed them to do so. Their reluctance to extend this to amateur an
/archives//html/Towertalk/2002-01/msg00064.html (10,928 bytes)

52. [TowerTalk] coax help (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Wed, 9 Jan 2002 13:13:02 -0800
LMR-400 isn't shown on that link, but the Times Microwave ads show a loss of 2.7 dB/100 ft at 440 MHz. -- Bob Nielsen, N7XY nielsen@oz.net Bainbridge Island, WA http://www.oz.net/~nielsen IOTA NA-065
/archives//html/Towertalk/2002-01/msg00213.html (10,629 bytes)

53. [TowerTalk] Stepp IR antenna, ie Non-traditional antenna designs (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Wed, 30 Jan 2002 17:55:25 -0800
Also see K7IM's review at www.eham.com Bob, N7XY ________________________________________________________________________ Where do you get ICE bandpass filters & beverage matching boxes? The same pla
/archives//html/Towertalk/2002-01/msg00654.html (7,963 bytes)

54. [TowerTalk] Source for Lat and Long coordinates? (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Sat, 1 Dec 2001 17:47:53 -0800
I found the coordinates from the buck.com callsign lookup to be much closer than those at qrz.com. I went into qrz.com and edited the coordinates. However, after configuring Xastir to use tiger and t
/archives//html/Towertalk/2001-12/msg00023.html (10,312 bytes)

55. [TowerTalk] Rotator Problem - follow up (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Mon, 3 Dec 2001 09:17:45 -0800
Try removing the CoaxSeal after it has been on the connector and exposed to the elements for a few years and you will understand. Bob, N7XY List Sponsored by AN Wireless: AN Wireless handles Rohn tow
/archives//html/Towertalk/2001-12/msg00057.html (9,237 bytes)

56. [TowerTalk] A Rather Late Email (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Sun, 9 Dec 2001 07:05:55 -0800
With a little help from some internet tools and a callsign server, it looks like N7HQ is the intended recipient; presumably he is subscribed to this list. However, his system does not appear to be ac
/archives//html/Towertalk/2001-12/msg00178.html (8,753 bytes)

57. [TowerTalk] Hink and Kinks (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Mon, 17 Dec 2001 13:56:20 -0800
Nah, the January QST hasn't made it to the left coast yet. Of course, now that Tom mentioned it, Steve will have time to get his blood pressure worked up before he even opens the cover. Bob, N7XY Lis
/archives//html/Towertalk/2001-12/msg00388.html (9,602 bytes)

58. [TowerTalk] Force12 (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Wed, 3 Oct 2001 08:35:25 -0700
Stated somewhat differently, use as much tower as the length of the feedline will allow. -- Bob Nielsen, N7XY nielsen@oz.net Bainbridge Island, WA http://www.oz.net/~nielsen IOTA NA-065, USI WA-028S
/archives//html/Towertalk/2001-10/msg00063.html (9,337 bytes)

59. [TowerTalk] Low Band Verticals (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Wed, 5 Sep 2001 10:42:40 -0700
Just don't take too seriously the blurb on the MFJ web site where it says "3 feet of ruthless radiating power". Does MFJ supply the additional parts needed to lengthen the 20 meter stub for use on 30
/archives//html/Towertalk/2001-09/msg00178.html (9,841 bytes)

60. [TowerTalk] guy rod angle (score: 1)
Author: nielsen@oz.net (Bob Nielsen)
Date: Fri, 7 Sep 2001 16:27:45 -0700
In my freshman chemistry class at Caltech, the prof (Linus Pauling, no less) used to work out a problem on his 6 in. slide rule and recite the answer to 6 or 7 digits. We all knew he had a sheet with
/archives//html/Towertalk/2001-09/msg00296.html (9,667 bytes)


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