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Total 103 documents matching your query.

21. Re: [TowerTalk] Erecting tower sections solo (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Wed, 2 Dec 2015 21:16:16 -0800
Using a small electric winch has a safety advantage over other methods: if something gets stuck they will stall rather than break the lifting cable (or worse yet, pull the tower over). If you pay att
/archives//html/Towertalk/2015-12/msg00047.html (11,648 bytes)

22. Re: [TowerTalk] Shrink Tubing (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Sat, 19 Dec 2015 20:28:21 -0800
3M EPS-400 is an adhesive lined tubing with a 4:1 shrink ratio. Ken K6MR All: Is there shrink tubing that will reliably shrink by a 4:1 ratio? I tried using some tubing I had on hand to cover several
/archives//html/Towertalk/2015-12/msg00296.html (7,529 bytes)

23. Re: [TowerTalk] Wind and the antenna (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Wed, 6 Jan 2016 10:32:21 -0800
Which is why you want the antenna torque balanced. Then it doesnt matter what direction the antenna is pointed, or where the wind comes from. Modern software makes it easy enough to do that there is
/archives//html/Towertalk/2016-01/msg00088.html (9,382 bytes)

24. Re: [TowerTalk] My first introduction to guy-wire dead end grips (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Thu, 7 Jan 2016 11:10:39 -0800
Sufficiently advanced technology is indistinguishable from magic. Dont worry. Thousands (millions?) of them are out there. I had a tower go down decades ago due to improperly installed cable clamps (
/archives//html/Towertalk/2016-01/msg00117.html (8,744 bytes)

25. Re: [TowerTalk] Rohn Bolts AND nuts - won't mate (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Wed, 27 Jan 2016 10:23:27 -0800
Something must have changed recently: I have purchased 30 sets of bolts for 25G from Hill Radio within the last year or so and all worked well. The bolts I just checked are a mixture of JH and JDF ma
/archives//html/Towertalk/2016-01/msg00441.html (10,077 bytes)

26. Re: [TowerTalk] Tower buried section legs -- Buried in Concrete orBelow the Concrete? (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Fri, 29 Jan 2016 09:13:45 -0800
Why do people insist on putting the first section in concrete? If you read the K7NV analysis of guyed towers it is far better to use a pier pin base. Less stress on the tower and the problem of rust
/archives//html/Towertalk/2016-01/msg00508.html (14,829 bytes)

27. Re: [TowerTalk] Finally got my crank up tilt over (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Tue, 16 Feb 2016 13:28:40 -0800
I bought a used TH354 as my first tower in 1967. This was one of a series of guyed crankups that Tri-Ex made in the 60s and a little into the 1970s. The series was the T, TH, H, and HS, in heights fr
/archives//html/Towertalk/2016-02/msg00209.html (12,617 bytes)

28. Re: [TowerTalk] Looking for alternative sources for fiberglass spreaders (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Thu, 18 Feb 2016 10:46:16 -0800
Max Gain Systems http://mgs4u.com/index.html Ken K6MR I want to experiment with building a 2-element half-WL wire-beam for 40m. I know that Cubex sells fiberglass poles I could use for spreaders. Doe
/archives//html/Towertalk/2016-02/msg00235.html (8,643 bytes)

29. Re: [TowerTalk] Source for (4) 265 foot towers. (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Thu, 25 Feb 2016 19:58:08 -0800
The guys you have to watch for are the dirt strips that pop up out of nowhere. Ive got a neighbor that comes over the towers at 300 feet or so on final to his dirt strip. As I understand it the strip
/archives//html/Towertalk/2016-02/msg00298.html (11,997 bytes)

30. Re: [TowerTalk] Rotor Control Program / Green Heron (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Wed, 9 Mar 2016 09:27:41 -0800
PSTRotator by YO3DMU. Ken K6MR I'm working on setting my station up as a 'glass panel' station. All of my equipment will be rack mounted and controlled via my pc, and a couple monitors including a to
/archives//html/Towertalk/2016-03/msg00131.html (8,124 bytes)

31. Re: [TowerTalk] tower removal (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Wed, 9 Mar 2016 20:20:36 -0800
W8JI has a photo on his web site of 110 feet of 25G being taken down with a crane. He put the sling at 75 feet and it was ok. He noted that the sling should be in the middle of a section and wrapped
/archives//html/Towertalk/2016-03/msg00160.html (9,514 bytes)

32. Re: [TowerTalk] W6NL 40m Moxon (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Sat, 9 Apr 2016 21:51:22 -0700
Ive wondered this myself but never bothered to model it. Here are some rough figures from Yagi Stress: Reflector element without the tee: 2.88 sq ft. Driven element without the tee: 2.76 sq. ft. Refl
/archives//html/Towertalk/2016-04/msg00120.html (9,147 bytes)

33. Re: [TowerTalk] W6NL 40m Moxon (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Sun, 10 Apr 2016 09:05:56 -0700
Thanks Joe. I was thinking about wind vectors but didnt work it through. With these numbers it should be simple to add a torque compensator to make up for the higher torque generated by the reflector
/archives//html/Towertalk/2016-04/msg00126.html (14,402 bytes)

34. Re: [TowerTalk] W6NL 40m Moxon (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Sun, 10 Apr 2016 11:55:16 -0700
Ok, this even makes mathematical sense (as it should): Assume the wind angle is with respect to the antenna direction. Total area = Element area * COS (angle) + Boom area * SIN(angle) First derivativ
/archives//html/Towertalk/2016-04/msg00128.html (8,739 bytes)

35. Re: [TowerTalk] W6NL 40m Moxon (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Sun, 10 Apr 2016 17:11:12 -0700
All the more reason to be sure that the antenna is torque balanced. Those shifting winds can beat a rotator to death (not a prop motor, but all regular ones). I can loosen the bolts on my reasonably
/archives//html/Towertalk/2016-04/msg00131.html (14,622 bytes)

36. Re: [TowerTalk] W6NL 40m Moxon (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Sun, 10 Apr 2016 17:14:45 -0700
You are without a doubt the Excel Master :^). I couldnt live (er, at least do any antenna sims) without AutoEZ. It is amazing. Ken K6MR I'd like to add a "me too" to that thank you. Nice mental exerc
/archives//html/Towertalk/2016-04/msg00132.html (9,085 bytes)

37. Re: [TowerTalk] W6NL 40m Moxon (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Tue, 12 Apr 2016 21:53:02 -0700
OK Jim, I need that explained. If the wind is at 45 degrees to the boom, how is there not a contribution of force by both the boom and the elements? Ken K6MR You don't need to be concerned with equal
/archives//html/Towertalk/2016-04/msg00168.html (10,412 bytes)

38. Re: [TowerTalk] W6NL 40m Moxon (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Wed, 13 Apr 2016 09:43:07 -0700
Thanks for the link. This is definitely not an intuitive result. The good thing is that the loads are smaller using this procedure. Yagi Stress calculates these loads, but Ive never done pencil and p
/archives//html/Towertalk/2016-04/msg00182.html (11,776 bytes)

39. Re: [TowerTalk] [Bulk] Re: W6NL 40m Moxon (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Wed, 13 Apr 2016 14:30:47 -0700
Ive been trying to find an archive of Communications Quarterly but no luck so far. This obviously takes some study to understand (at least for a non-mechanical type like me). Grant: your idea of adju
/archives//html/Towertalk/2016-04/msg00185.html (12,001 bytes)

40. Re: [TowerTalk] 6 x 2 unit... (score: 1)
Author: Ken K6MR <k6mr@outlook.com>
Date: Sun, 17 Apr 2016 18:17:04 -0700
I have two of the KK1L switches. They work well. As they say, some assembly required. But overall a nice design. As for a band decoder: assuming you have a radio with (DCBA) outputs, Unified Microsys
/archives//html/Towertalk/2016-04/msg00214.html (9,235 bytes)


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