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21. [Towertalk] Phillystran break strength vs. diameter? (score: 1)
Author: (Jon Zaimes AA1K)
Date: Thu, 12 Sep 2002 12:33:00 -0400
Jon, Yes the black jacket is to provide UV protection. I'm still using some Phillystran that I bought in 1978. Now on its fourth QTH. 73/Jon AA1K
/archives//html/Towertalk/2002-09/msg00406.html (10,103 bytes)

22. [Towertalk] Rohn 25 Guy Bracket/Torque Arm Question (score: 1)
Author: (Jon Zaimes AA1K)
Date: Wed, 18 Sep 2002 12:59:45 -0400
Jon, If they are that high, it is possible you assembled them incorrectly in order to fit around the diagonals -- just under the horizontal bar the bend in the guy brackets for the diagonal would be
/archives//html/Towertalk/2002-09/msg00625.html (13,614 bytes)

23. [Towertalk] Two killed when television tower falls inwestern Nebraska (score: 1)
Author: (Jon Zaimes AA1K)
Date: Wed, 25 Sep 2002 10:05:20 -0400
I remember this tower from when I worked in Scottsbluff in the '70s. Was quite a thing to see. Here's a story from the Omaha paper and a couple of photos:
/archives//html/Towertalk/2002-09/msg00799.html (7,909 bytes)

24. [Towertalk] Crane or Gin Pole? (score: 1)
Author: (Jon Zaimes AA1K)
Date: Sat, 28 Sep 2002 08:59:51 -0400
Jeff, You may wish to consider the type of tower. BX and HBX have no horizontal cross-members, making them very difficult to climb compared to something like Rohn 25. I have one BX tower, only becaus
/archives//html/Towertalk/2002-09/msg00925.html (8,631 bytes)

25. [TowerTalk] self-supporting steel tower questions (score: 1)
Author: (jon zaimes)
Date: Mon, 2 Feb 1998 15:48:45 -0500 (EST)
There's a 140-ft (or so) self-supporting steel tower for sale locally. Was removed from service a year or so ago (replaced by a cell tower). About 4.5 feet across each face at the base; triangular; t
/archives//html/Towertalk/1998-02/msg00039.html (8,337 bytes)

26. [TowerTalk] Climbing alone ? (score: 1)
Author: (jon zaimes)
Date: Tue, 23 Dec 1997 08:37:41 -0500 (EST)
That one would scare the hell out of me! What I've done many times, using nylon or braided nylon, which has a bit of stretch to it, for the haul line, is to pull the section to where it is not quite
/archives//html/Towertalk/1997-12/msg00579.html (8,524 bytes)

27. [TowerTalk] Upside down mast (score: 1)
Author: (Jon Zaimes AA1K)
Date: Tue, 8 Jul 1997 02:42:05 -0400 (EDT)
Hi Richard.... Yes, I have used this technique successfully. Mine had a 204BA at the top of the "regular" mast, at 80 feet, about 12 feet above the flat plate. I had a Wilson 4-el 15m yagi (17-ft boo
/archives//html/Towertalk/1997-07/msg00285.html (9,948 bytes)

28. [TowerTalk] Upside down mast (score: 1)
Author: (Jon Zaimes AA1K)
Date: Tue, 8 Jul 1997 02:47:05 -0400 (EDT)
To: <> One advantage is you can climb easily (on the tower) to both antennas. No need to shinny up the mast to the top antenna. 73/Jon AA1K -- FAQ on WWW: http://www.contestin
/archives//html/Towertalk/1997-07/msg00286.html (8,032 bytes)

29. [TowerTalk] WRONG CATV HARDLINE? (score: 1)
Author: (Jon Zaimes AA1K)
Date: Sat, 12 Jul 1997 10:31:26 -0400 (EDT)
Sounds like you have 3/4 inch 75 ohm CATV hardline. I've used more than 10,000 feet of it here and at my old QTH. Making connections is easy; you just need one double-female barrel connector and one
/archives//html/Towertalk/1997-07/msg00425.html (8,404 bytes)

30. [TowerTalk] Rotor Installation (score: 1)
Author: (AA1K Jon Zaimes)
Date: Wed, 18 Jun 1997 11:09:00 -0400 (EDT)
To: <> You could mount the plate where two sections meet, where there are no diagonals. If the rotor has a bottom mast mount, there is another solution. Make up a "T" bracket
/archives//html/Towertalk/1997-06/msg00606.html (9,188 bytes)

31. [TowerTalk] Boost Rotor voltage? (score: 1)
Author: (AA1K Jon Zaimes)
Date: Fri, 9 May 1997 01:50:52 -0400 (EDT)
I did this at a former QTH, where the control cable runs were 300-400 feet long. I mounted a 12.6 v, 3 amp center-tapped transformer on the rear of the control box. As I recall just half of the windi
/archives//html/Towertalk/1997-05/msg00255.html (8,061 bytes)

32. [TowerTalk] HD73...summary (score: 1)
Author: (Jon Zaimes)
Date: Mon, 19 May 1997 16:01:17 -0400 (EDT)
Hi Ron.... If you are installing the starting capacitor at the rotor, i would recommend putting it OUTSIDE the rotor housing. This will simplify replacement so you don't have to pull the rotor out to
/archives//html/Towertalk/1997-05/msg00471.html (6,990 bytes)

33. [TowerTalk] 204BA loose clamps (score: 1)
Author: (Jon Zaimes)
Date: Tue, 20 May 1997 02:48:54 -0400 (EDT)
Hi... I came home from Dayton to find the reflector of my 204BA sagging from the first element joint (a few feet out from the boom). I recognized the problem immediately -- a few months ago the same
/archives//html/Towertalk/1997-05/msg00485.html (9,460 bytes)

34. [TowerTalk] Summary (long) on 204BA loose element clamps (score: 1)
Author: (Jon Zaimes)
Date: Fri, 23 May 1997 10:07:09 -0400 (EDT)
Herewith a summary of some of the replies on bolts and elements vibrating loose on my 204BA. Some great tips here, many thanx to all!...73/Jon AA1K "If you don't have time to do it right the first ti
/archives//html/Towertalk/1997-05/msg00545.html (15,162 bytes)

35. [TowerTalk] All-stainless clamps (score: 1)
Author: (AA1K Jon Zaimes)
Date: Wed, 28 May 1997 11:39:23 -0400 (EDT)
I have a couple of boxes of Ideal brand hose clamps, labeled "all-stainless". But when I check the bolts with a magnet, they do show some magnetism. As I recall, there was a thread on here last year
/archives//html/Towertalk/1997-05/msg00671.html (7,289 bytes)

36. [TowerTalk] TopBand: inverted L question (score: 1)
Author: (AA1K Jon Zaimes)
Date: Fri, 30 May 1997 17:44:42 -0400 (EDT)
putting it back up but on the new tower. The new tower sits up on a ridge of ledge and is 93' of 25g with TH-6 's at 95 and 60'....the bottom ant. is on a antenna ..... Is this a certainty? Is anyon
/archives//html/Towertalk/1997-05/msg00747.html (7,599 bytes)

37. [TowerTalk] Room For Shorty Above TH11 (score: 1)
Author: (AA1K jon zaimes)
Date: Thu, 3 Apr 1997 09:42:17 -0500 (EST)
Worth modeling to find out; I did this for my 204BA and Wilson 4-el. 15m yagi 6 years ago and found the patterns suffered at anything less than about 18 feet. Interesting trick! But I don't think the
/archives//html/Towertalk/1997-04/msg00084.html (9,296 bytes)

38. [TowerTalk] Name that tower? (score: 1)
Author: (AA1K jon zaimes)
Date: Sun, 6 Apr 1997 00:47:24 -0500 (EST)
OK game show contestants, here are your clues: 20-foot sections, triangular, bolt-together construction, galvanized. 19-inches on a face. The three vertical elements in each section are made of V-sha
/archives//html/Towertalk/1997-04/msg00169.html (8,987 bytes)

39. [TowerTalk] Name that tower? (more info) (score: 1)
Author: (AA1K jon zaimes)
Date: Mon, 7 Apr 1997 01:25:51 -0400 (EDT)
Additional info: Weighed one 20-ft section today and it was 275 lbs. Thickness of the vertical "V" members is approximately 5/32". 73/Jon AA1K -- FAQ on WWW:
/archives//html/Towertalk/1997-04/msg00190.html (10,080 bytes)

40. [TowerTalk] mast weight (score: 1)
Author: (AA1K jon zaimes)
Date: Tue, 15 Apr 1997 02:21:54 -0400 (EDT)
When I took down 100 feet of Rohn 25 this past winter at a friend's QTH, I opted to drop the 22-foot mast down into the tower and deal with it when all but the last two sections were removed. There w
/archives//html/Towertalk/1997-04/msg00412.html (9,429 bytes)

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