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Total 636 documents matching your query.

341. [TowerTalk] Caps for 3" boom (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Tue, 5 Oct 2004 12:40:29 -0400
Thanks to a tip from Bill, K4XS I got a 3" cap with hose clamp from Home Depot. The cap cost $3.97. They stock caps for 2", 2.5", 3" and 4" pipe but remember this is for black steel pipe which is mea
/archives//html/Towertalk/2004-10/msg00079.html (7,311 bytes)

342. Re: [TowerTalk] shorty forty (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Sat, 13 Nov 2004 22:18:36 -0500
I have an older Cushcraft 2 el 40 and it uses a 10 turn loop of coax as a balun (called a Collins balun in some books). I set it to mid band and its 1.2 at 7170 and 1.7 at 7005 and 1.6 at 7298. None
/archives//html/Towertalk/2004-11/msg00382.html (8,866 bytes)

343. Re: [TowerTalk] 60th Birthday (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Sun, 2 Jan 2005 18:07:13 -0500
Reaching 60 does not mean your tower climbing days are over. I still do all my tower work (mainly from the roof). With my heart problems I am not allowed to climb trees any longer (but still have my
/archives//html/Towertalk/2005-01/msg00029.html (8,498 bytes)

344. Re: [TowerTalk] UST HDX5106/TRX100HD raising fixture question (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Tue, 18 Jan 2005 19:29:38 -0500
I have an old Tristao 71 foot crank up with the tower raising fixture that I have used dozens of times. UST bought out Tristao and is using Lou's designs with improvements. I suspect the TRX-1000 has
/archives//html/Towertalk/2005-01/msg00791.html (8,673 bytes)

345. Re: [TowerTalk] UST HDX5106/TRX100HD raising fixture question (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Wed, 19 Jan 2005 21:56:36 -0500
I knew Lou personally. UST wound up not only with Tristao but the tubular Wison masts that Lou's son bought from Jim Wilson now N7JW. Tri-Ex was owned by Frank Clement. He sold out to Tashjian much m
/archives//html/Towertalk/2005-01/msg00876.html (9,764 bytes)

346. [TowerTalk] Warning on CATS RD-1800 Rotor (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Wed, 19 Jan 2005 22:07:25 -0500
The RD-1800 rotor is a fine rotor but does not fit inside the US Tower 12.5" top sections (also Tristao). The T2X will fit although it must be brought up thru the bottom of the tower. Keep this in mi
/archives//html/Towertalk/2005-01/msg00878.html (6,977 bytes)

347. Re: [TowerTalk] RE: Utility pole beam mount (Randy Frazer) (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Tue, 25 Jan 2005 22:00:33 -0500
This topic comes up every so often. The original article was in a 1955 or 56 QST and later in the ARRL Handbook and Antenna Book. I mounted a Gonset Tri-Bander on top of a 50 foot pole. I found anoth
/archives//html/Towertalk/2005-01/msg01138.html (8,250 bytes)

348. Re: [TowerTalk] Verticals and Vertical Dipoles (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Wed, 2 Mar 2005 22:13:30 -0500
I have two Mor-Gain short dipoles mounted vertically. The top part is pure vertical and the bottom half is sloped (65 degrees) to the NE on one and to the SW on the other. The antennas are elevated 1
/archives//html/Towertalk/2005-03/msg00078.html (9,566 bytes)

349. [TowerTalk] Looking for 2 Meter AEA Isopole or parts (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Mon, 14 Mar 2005 22:01:58 -0500
I am looking for the top 5/8 section of a 2 meter Isopole that disappeared in a lightening strike. A complete Isopole is OK. The Isopole is mounted on top of the W9IIX laddermast on top of my 71 foot
/archives//html/Towertalk/2005-03/msg00307.html (7,889 bytes)

350. Re: [TowerTalk] Real numbers for Rohn BX-64 Re: guying (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Tue, 12 Apr 2005 21:34:52 -0400
I hope that everyone knows the BX series is only designed to hold a beam with a boom of NO longer than 10 feet. Guyed or unguyed. There have been horror stories of those who tried longer beams such a
/archives//html/Towertalk/2005-04/msg00417.html (10,080 bytes)

351. [TowerTalk] Struts on the KT 34 XA (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Thu, 14 Apr 2005 17:11:46 -0400
I have a very early KT 34 XA (it was the KT 34X when I bought it). The overhead struts are made of fairly thin aircraft cable. The strut on the director side broke summer before last and the strut on
/archives//html/Towertalk/2005-04/msg00498.html (8,413 bytes)

352. Re: [TowerTalk] Utility poles (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Sat, 23 Apr 2005 21:16:56 -0400
This conversation comes up on a regular basis and should be in the archives. The traditional article was in a 1956 QST and repeated in ARRL books for several years. A good update was in a early 1980'
/archives//html/Towertalk/2005-04/msg00649.html (9,077 bytes)

353. [TowerTalk] Bill Wall KC4UZ SK (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Mon, 16 May 2005 21:04:22 -0400
Bill Wall, KC4UZ the owner of Antenna Mart of Georgia passed away last Wednesday after a long illness. Bill was a member of towertalk and is rememered for his big Quads and the antenna switches desig
/archives//html/Towertalk/2005-05/msg00459.html (7,007 bytes)

354. Re: [TowerTalk] klm_kt34a to kt34m2 upgrade (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Sun, 29 May 2005 14:25:38 -0400
I had the same problem with come of the aluminum. A couple of pieces had such bad calcium deposits that the small aluminum broke. I had to order some from KLM and they shipped it so it got broken in
/archives//html/Towertalk/2005-05/msg00720.html (9,338 bytes)

355. Re: [TowerTalk] Antenna Compendium Vol 6 (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Tue, 31 May 2005 17:38:38 -0400
I agree with Al. Better borrow a copy or buy one from HRO or the Radio Bookstore. Dave K4JRB part Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sher
/archives//html/Towertalk/2005-05/msg00758.html (10,285 bytes)

356. [TowerTalk] Dual Dimensional Slider (DDS) Antenna?? (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Fri, 10 Jun 2005 22:28:58 -0400
An ad on QRZ.com by Mike Lebo is taking a survey about a possible dual dimension antenna. The ad shows some configurations for 40 to 10. Anyone know the skinny on this. He may be just trying to capit
/archives//html/Towertalk/2005-06/msg00265.html (7,313 bytes)

357. Re: [TowerTalk] MOV's (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Thu, 4 Aug 2005 14:52:29 -0400
I try to provide both a UPS amd MOV on all my PC's and use a PC on my transceivers. Even tho I may have some of the equipment on a power strip. I even have a couple of spares for future use. Most MOV
/archives//html/Towertalk/2005-08/msg00093.html (8,614 bytes)

358. Re: [TowerTalk] half square ground screens (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Fri, 12 Aug 2005 14:49:07 -0400
A half square is the Bob-Tail as W6BCX envisioned it. The common bob-tail with three vertical wires is a double bob-tail or three element bob-tail. Somehow this gets lost in both the W6SAI and ARRL H
/archives//html/Towertalk/2005-08/msg00252.html (9,381 bytes)

359. Re: [TowerTalk] Are All Low-Pass Filters Alike? - (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Tue, 16 Aug 2005 16:04:41 -0400
I have a Drake TV-3300-LP that went south while operating 40 meters with my 8877 AMP running 1400 watts out. Reading the filter its 1000 W Max which I assume is input not output. The coil in the filt
/archives//html/Towertalk/2005-08/msg00359.html (10,654 bytes)

360. [TowerTalk] G4ZU SK (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Thu, 1 Sep 2005 17:46:35 -0400
This came from a friend Of Capt Dick Bird G4ZU in France. Dick died on August 16th in his house near Carcassonne (South) of France. Dick, well known in the HAM community, was the creator in the fifti
/archives//html/Towertalk/2005-09/msg00041.html (7,254 bytes)


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