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References: [ +from:K7NV@contesting.com: 112 ]

Total 112 documents matching your query.

1. [TowerTalk] "Antenna Mast Design" in NCJ by W7NI (score: 1)
Author: k7nv@contesting.com (Kurt Andress)
Date: Thu May 15 02:18:22 2003
The W6NL(ex-W6QHS) book does not contain the current methodology either, it was published prior to Dick Weber's paper. But, it is still a great source for all kinds if valuable information, like win
/archives//html/Towertalk/2003-05/msg00153.html (9,919 bytes)

2. [Towertalk] RE: 40M 4 Sq vs. 2 el Yagi at 70 ft (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Sat, 12 Oct 2002 10:07:58 -0700
40 meters? Hi Wes, I have had a 40m 4 sq with Comtek box and 240 radials for 3 years and it works very well. Yesterday, I put a 40-2CD up at 50' on an AB577 and A/B'd the heck out of it to US, EU, J
/archives//html/Towertalk/2002-10/msg00432.html (7,860 bytes)

3. [Towertalk] Gin Poles With Block & Tackle Systems (was mast disaster avoidance) (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Thu, 11 Jul 2002 18:47:14 -0700
A properly rigged block & tackle system will reduce gin pole loads (or increase safety margins) as long as the load does not wander "too far" away from the pole. There is a little bit of info, at th
/archives//html/Towertalk/2002-07/msg00323.html (7,198 bytes)

4. [Towertalk] RE: Bearing for Prop Pitch Motor (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Sat, 11 May 2002 19:14:24 -0700
< I need to locate a bearing for a prop pitch motor. The bearing is a MRC G 203 R1. MRC has ignored my e-mails. Detroit ball bearing does not have one. This bearing goes on the low speed hub in the l
/archives//html/Towertalk/2002-05/msg00318.html (7,758 bytes)

5. [Towertalk] Tower Loading Calculations (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Mon, 01 Apr 2002 20:47:11 -0800
As the antenna(s) are raised above the tower top, the allowable antenna projected area is reduced below the area allowed at the tower top. It's also covered in the 19th edition of the ARRL Antenna Ha
/archives//html/Towertalk/2002-04/msg00060.html (7,631 bytes)

6. [Towertalk] RE: Wind pressure calculations (2/3 factor) + some (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Sun, 24 Mar 2002 15:16:19 -0800
Here's a blast from the past! Some guys are really slow.... Maybe, I'd watch out for that guy..... Herd that dude's cape got fetched up on a defective coin return slot in the phone booth, OSHA is loo
/archives//html/Towertalk/2002-03/msg00609.html (7,362 bytes)

7. [Towertalk] Failed KT34XA Boom/Mast Plate (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Tue, 26 Mar 2002 21:04:10 -0800
Hi, I would give some thought to that antennas boom torque imbalance problem when pondering the plate failure. The imbalance is a fairly consistent feature in those old KLM antennas. Asymmetric eleme
/archives//html/Towertalk/2002-03/msg00715.html (7,414 bytes)

8. [Towertalk] anti-seize compound (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Tue, 26 Mar 2002 21:33:56 -0800
I prefer the anhydrous lanolin I got from my pharmacist. A similar product called Lanacote (just more $) has been used for ages in the marine industry. A 1 lb jar($12) is a lifetime supply and it doe
/archives//html/Towertalk/2002-03/msg00716.html (6,550 bytes)

9. [TowerTalk] Round vs. Flat (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Tue, 04 Sep 2001 13:33:52 -0700
Hi Gary, Dan's answer about using the "round" tower area rating for cylindrical antenna members is right. You don't want to be using that old 9.4 sq ft "effective area" for the TH7. You want to use t
/archives//html/Towertalk/2001-09/msg00146.html (8,854 bytes)

10. [TowerTalk] Round vs. Flat (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Tue, 04 Sep 2001 18:21:27 -0700
Barry, You had it right, 11.5 with the antenna pointed into the wind (elements broadside), 4.1 with boom broadside. Which of the two numbers depends on how clever you think you are. If you have desig
/archives//html/Towertalk/2001-09/msg00153.html (8,134 bytes)

11. [TowerTalk] Round vs. Flat (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Wed, 05 Sep 2001 01:19:26 -0700
Guess my response to this got bounced by the semantics police....take two. Response: Barry, I think you have it right, 11.5 with the antenna pointed into the wind (elements broadside), 4.1 with boom
/archives//html/Towertalk/2001-09/msg00161.html (8,296 bytes)

12. [TowerTalk] Protecting connectors (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Sun, 26 Aug 2001 15:39:57 -0700
I put the ScothKote in between the first and second tape wraps, past the first wrap (2") onto the coax jacket. Let it dry till slightly tacky before the second wrap. Works fine, bomb proof seal, no U
/archives//html/Towertalk/2001-08/msg00599.html (9,184 bytes)

13. [TowerTalk] Effective Moment/K Force & Yaesu rotators (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Wed, 11 Jul 2001 13:05:46 -0700
I haven't seen the wording of the new Yaesu method of calculating the K value including the mast. The mast is not currently in the description on their website. However it says it should be done is h
/archives//html/Towertalk/2001-07/msg00193.html (11,810 bytes)

14. [TowerTalk] Pier pin vs. burying in concrete (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Fri, 01 Jun 2001 01:46:19 -0700
Hi All, Just to clarify a few things.... I think there may be potential for a bit of confusion about what various people mean when refering to "a pier pin" base. The text referred to here, was in the
/archives//html/Towertalk/2001-06/msg00005.html (13,372 bytes)

15. [TowerTalk] Pier pin vs. burying in concrete (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Fri, 01 Jun 2001 13:21:54 -0700
As Hank pointed out, both bases are pinned in a strict sense. The moment I was referring to is not developed by any fixivity to the footing, but by not having all three legs sharing the axial load. I
/archives//html/Towertalk/2001-06/msg00028.html (10,541 bytes)

16. [TowerTalk] Pier pin vs. burying in concrete (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Sat, 02 Jun 2001 11:50:44 -0700
Hi Steve and All, The larger towers in the Rohn commercial catalogue use only a tapered base section and a bearing plate between the tower and footing that is machined so it has a small diamaeter und
/archives//html/Towertalk/2001-06/msg00041.html (10,805 bytes)

17. [TowerTalk] Wind Loading redux (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Thu, 07 Jun 2001 13:16:41 -0700
Don't forget to think about what's happening when the antennas are broadside to the wind. The common practice of attaching a mast at the center of gravity of the antenna, is quite convenient for han
/archives//html/Towertalk/2001-06/msg00110.html (11,453 bytes)

18. [TowerTalk] Wind Loading redux (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Fri, 08 Jun 2001 01:34:47 -0700
Sounds like you have it covered Gene! Except, that the mention of element compensators smells like some old world thought, which would be incorrect in light of the information you have shared. So, my
/archives//html/Towertalk/2001-06/msg00117.html (13,417 bytes)

19. [TowerTalk] Reluctant T2X (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Fri, 08 Jun 2001 23:24:09 -0700
Your probably right George. I think there is plenty of evidence around that the rotator has a problem with the brake mechanism. I don't think that can be easily corrected. The one here is flawless in
/archives//html/Towertalk/2001-06/msg00148.html (9,038 bytes)

20. [TowerTalk] Ginpole for 20 foot sections (score: 1)
Author: K7NV@contesting.com (Kurt Andress)
Date: Thu, 14 Jun 2001 13:00:24 -0700
Hi Tom and all, Remember, when evaluating the true effect of the "reduced load" on the ginpole, that if the load is not directly below the pole, but creates a small angle between the line and the po
/archives//html/Towertalk/2001-06/msg00355.html (9,875 bytes)


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