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References: [ +from:thompson@mindspring.com: 636 ]

Total 636 documents matching your query.

301. crank up tower loads: was wind force design criteria (score: 1): Author: thompson@mindspring.com (David L. Thompson); Date: Tue, 13 Aug 1996 12:51:19 -0400; Most towers are rated at a value of Sq ft in 50 or 70MPH winds. First the recommended wind force load for many areas is usually 70 or 80MPH so the 50MPH actually rates the tower lower at the recomme; /archives//html/Towertalk/1996-08/msg00133.html (10,073 bytes)
302. Climbing Accident (score: 1): Author: thompson@mindspring.com (David L. Thompson); Date: Wed, 14 Aug 1996 10:59:35 -0400; Thanks to Eric for the forward on the accident with the Rohn Fold Over Tower Also never climb any tower that is designed for cranking up or folding over. I have a friend with the Fold Over Rohn desig; /archives//html/Towertalk/1996-08/msg00148.html (8,027 bytes)
303. Trylon / Titan Towers?? (score: 1): Author: thompson@mindspring.com (David L. Thompson); Date: Thu, 15 Aug 1996 10:26:42 -0400; I would think that the chart from each manufacturer would be different due to design specs. There is some correlation between weight (down moment) and square feet, but normally a tower mfg designs t; /archives//html/Towertalk/1996-08/msg00156.html (9,064 bytes)
304. Bracketing a self-supporting tower. (score: 1): Author: thompson@mindspring.com (David L. Thompson); Date: Tue, 20 Aug 1996 16:07:32 -0400; I agree with Tony, K1KP that Rohn 25 is not self supporting. You often see 40 or 50 feet not guyed, but even at that height you are taking a chance. As to using a house bracket with a crank up, if yo; /archives//html/Towertalk/1996-08/msg00193.html (7,797 bytes)
305. Laddermast (score: 1): Author: thompson@mindspring.com (David L. Thompson); Date: Mon, 26 Aug 1996 21:06:32 -0400; I have had a WD9IIX laddermast up for 9+ years and am pleased. The mast has had some big antennas stacked on it and gone thru tornadoes and Hurricane Opal (80MPH winds). I currently have a 2 el 12 me; /archives//html/Towertalk/1996-08/msg00243.html (8,482 bytes)
306. Rohn RTP (score: 1): Author: thompson@mindspring.com (David L. Thompson); Date: Mon, 08 Jul 1996 22:58:33 -0400; Pete, AS you did I saw the QST ads for the Rohn RTP towers. Rohn has a web page and I left them a message that I would like info. This after I asked HRO and two or three other dealers and got nowhere; /archives//html/Towertalk/1996-07/msg00075.html (8,451 bytes)
307. Crank up tower raising fixtures (score: 1): Author: thompson@mindspring.com (David L. Thompson); Date: Wed, 10 Jul 1996 13:28:10 -0400; I have an old Tristao which is very close to the current TX series with the tower raising fixture. I used to use the tower raising fixture to lower the tower or raise the tower to a position to add t; /archives//html/Towertalk/1996-07/msg00086.html (8,401 bytes)
308. Climbing a crank up and wench/winch (score: 1): Author: thompson@mindspring.com (David L. Thompson); Date: Wed, 10 Jul 1996 22:47:36 -0400; Fulton used to spell their mechanisms wenches...the last one I have (got from US Tower) now says winch. From now on I'll use the modern spelling so we don't make the YL's unhappy. Dave K4JRB; /archives//html/Towertalk/1996-07/msg00088.html (6,926 bytes)
309. Rotating Tower (score: 1): Author: thompson@mindspring.com (David L. Thompson); Date: Tue, 11 Jun 1996 16:47:04 -0400; Another company that was selling a rotating tower was Tri-Ex. The towers come in 120, 130, and 140' sizes. They sell the complete system including the base rotor and all guy material as the Clement T; /archives//html/Towertalk/1996-06/msg00070.html (7,432 bytes)
310. Big, heavy mast (score: 1): Author: thompson@mindspring.com (David L. Thompson); Date: Wed, 19 Jun 1996 11:32:52 -0400; DO NOT USE ANT TYPE OF WATER PIPE FOR LONG MASTS! Schedule 40 or 80 are not designed to handle antennas in strong bending moments caused by wind. No matter how big it appears it will bend! I used sc; /archives//html/Towertalk/1996-06/msg00143.html (7,673 bytes)
311. Re: [TowerTalk] Telephone pole tower (score: 1): Author: "David L. Thompson" <thompson@mindspring.com>; Date: Sat, 23 Aug 2003 02:06:36 -0400; Utility poles make excellent towers. You can mount a rotor at the top as was shown in a late 1950's QST and later in both the ARRL antenna book and handbook. I used this arrangement for years. K5RFJ; /archives//html/Towertalk/2003-08/msg00774.html (8,913 bytes)
312. Re: [TowerTalk] C31-XR versus KT36XA (score: 1): Author: "David L. Thompson" <thompson@mindspring.com>; Date: Mon, 15 Sep 2003 01:14:56 -0400; I can't speak to the possible problem with the KT 34XA in the tri-bander tests. The KT 34XA must be assembled correctly and tested for correct operation and this is not often easy due to the connecti; /archives//html/Towertalk/2003-09/msg00392.html (10,180 bytes)
313. Re: [TowerTalk] Gotham Antennas (score: 1): Author: "David L. Thompson" <thompson@mindspring.com>; Date: Thu, 18 Sep 2003 12:34:34 -0400; Let's hope he does not try to duplicate the Gotham beam with those drooping elements and soft boom. Boy have we come a long way with antennas since Gotham (but the owner made a mint too). Dave K4JRB; /archives//html/Towertalk/2003-09/msg00480.html (7,298 bytes)
314. Re: [TowerTalk] high power 300 ohm twinlead (score: 1): Author: "David L. Thompson" <thompson@mindspring.com>; Date: Mon, 13 Oct 2003 13:25:33 -0400; I used 300 ohm transitting twin lead for HB9CV phasing on a 2 el 80 I had up. The KW stuff is heavy, about 1.5" across, and is NOT flat (has a ridge in the center separating the two wires). It took m; /archives//html/Towertalk/2003-10/msg00270.html (7,349 bytes)
315. Re: [TowerTalk] KLM 5el 20m monobander - High SWR (score: 1): Author: "David L. Thompson" <thompson@mindspring.com>; Date: Wed, 15 Oct 2003 12:05:55 -0400; I had one up for several years in the late 1970's along with a 5 el 15 and a 6 el 10. They were called Big Stickers then. All use the KLM modified Oliver Swan log cell and parasitic elements. The nor; /archives//html/Towertalk/2003-10/msg00325.html (9,392 bytes)
316. Re: [TowerTalk] Re: What is the largest 20mtr monobander youhaveeverseen? (score: 1): Author: "David L. Thompson" <thompson@mindspring.com>; Date: Tue, 28 Oct 2003 17:09:19 -0500; K4SKI in North Carolina had a 10 element 20 on a 100 foot boom up in the 1970's. The boom was Rohn 25. 73 Dave K4JRB _______________________________________________ See: http://www.mscomputer.com for; /archives//html/Towertalk/2003-10/msg00670.html (9,014 bytes)
317. Re: [TowerTalk] New Hazer problems - questions (score: 1): Author: "David L. Thompson" <thompson@mindspring.com>; Date: Mon, 3 Nov 2003 14:47:48 -0500; There have been several articles on building a tram or antenna elevator for both towers and telephone poles. The best way to find those in QST or ham radio magazines is to do a search at the ARRL mem; /archives//html/Towertalk/2003-11/msg00050.html (8,891 bytes)
318. Re: [TowerTalk] Crank-up won't crank (score: 1): Author: "David L. Thompson" <thompson@mindspring.com>; Date: Sat, 15 Nov 2003 17:57:21 -0500; I agree with Steve K7LXC. Sounds like its caught. The cables barely clear the metal tower at times and either its caught or one of the pulleys is off the track. I am on my third winch for my 71 foote; /archives//html/Towertalk/2003-11/msg00429.html (9,864 bytes)
319. Re: [TowerTalk] Nonconductive towers (score: 1): Author: "David L. Thompson" <thompson@mindspring.com>; Date: Thu, 20 Nov 2003 19:39:00 -0500; The best non conductive tower is the telephone pole (really a power pole). I was just looking at a great article on tracking a pole in a 1964 CQ Magazine. The problem with a power pole is that you ar; /archives//html/Towertalk/2003-11/msg00505.html (7,894 bytes)
320. Re: [TowerTalk] Best tuner value? (I think that was the topic) (score: 1): Author: "David L. Thompson" <thompson@mindspring.com>; Date: Sun, 30 Nov 2003 19:47:49 -0500; I agree The N4XM Xmatch is the best tuner especially for low band. This tuner tunes 160 no matter what. Plan on spending over $1K and love it. 73 Dave K4JRB kilobuck on an ___________________________; /archives//html/Towertalk/2003-11/msg00637.html (8,792 bytes)

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