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Total 17 documents matching your query.

1. [TowerTalk] Tower Detuning (score: 1): Author: clive@gm3poi.prestel.co.uk (Clive GM3POI); Date: Mon, 8 Jan 2001 11:06:49 -0000; Can anyone suggest a method of detuning a tower without dropping a wire from the top of it and using that with a series Cap. 73 Clive GM3POI -- FAQ on WWW: http://www.contesting.com/FAQ/towertalk Sub; /archives//html/Towertalk/2001-01/msg00191.html (7,046 bytes)
2. [TowerTalk] Tower Detuning (score: 1): Author: b_bradfield@yahoo.com (Brad Bradfield); Date: Mon, 8 Jan 2001 06:18:39 -0800 (PST); That's the method used by AM broadcasters to detune "re-radiators", and the only method I know of. Brad, W5CGH == __________________________________________________ Do You Yahoo!? Yahoo! Photos - Sha; /archives//html/Towertalk/2001-01/msg00194.html (7,859 bytes)
3. [TowerTalk] Tower Detuning (score: 1): Author: ka4inm@qsl.net (Ron KA4INM Youvan); Date: Mon, 8 Jan 2001 09:49:44 -0500; Another way is obvous, break up the tower with insulators. This is also needed to keep a nearby AM station from coming into the `shack' on the coaxes & W.G. at mw sites, radio & TV studioes etc. 73 (; /archives//html/Towertalk/2001-01/msg00196.html (7,745 bytes)
4. [TowerTalk] Tower Detuning (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Mon, 08 Jan 2001 07:37:20 -0800; Moxon's book HF Antennas for All Occasions describes on p 163 a scheme for detuning house wiring and piping using a linear tuned trap. It is either tapped across a length of the resonant conductor or; /archives//html/Towertalk/2001-01/msg00198.html (8,086 bytes)
5. [TowerTalk] Tower Detuning (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 8 Jan 2001 12:35:02 -0500; How do you break up transmission lines with insulators? 73, Tom W8JI w8ji@contesting.com -- FAQ on WWW: http://www.contesting.com/FAQ/towertalk Submissions: towertalk@contesting.com Administrative r; /archives//html/Towertalk/2001-01/msg00200.html (7,258 bytes)
6. [TowerTalk] Tower Detuning (score: 1): Author: "Mike Wetzel" <mjwetzel@comcast.net>; Date: Mon, 4 Oct 2010 17:51:36 -0400; Dual posting Towertalk and TopBand. I need to detune a tower that has 2 side mounted rotating 20 meter antennas on it (not TIC rings but swing arms) (tower 170', boom 46'). I have tried the sectional; /archives//html/Towertalk/2010-10/msg00021.html (7,164 bytes)
7. Re: [TowerTalk] Tower Detuning (score: 1): Author: "Michael Baker" <k7dd@cox.net>; Date: Mon, 4 Oct 2010 15:00:26 -0700; How about using the Giant Clamp on Beads made my Fair-Rite? Clamp one or more on each leg and the descending cables. Not cheap but it should work. Michael Baker K7DD k7dd@cox.net --Original Message--; /archives//html/Towertalk/2010-10/msg00022.html (8,171 bytes)
8. Re: [TowerTalk] Tower Detuning (score: 1): Author: Jeffrey Okamitsu <w3kl@w3kl.com>; Date: Mon, 4 Oct 2010 17:22:07 -0700 (PDT); How are you setting up the W8JI parallel resonant circuit? I detune my 140 foot tower using the W8JI method because it was coupling into my 160 m inv L. Works great. I hang a wire from aboout 80 fee; /archives//html/Towertalk/2010-10/msg00024.html (8,803 bytes)
9. Re: [TowerTalk] Tower Detuning (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Tue, 05 Oct 2010 09:28:43 -0700; Sorry, that will NOT work -- the impedance of a single turn through these parts are FAR too small to have any effect on 160M. 73, Jim Brown K9YC _______________________________________________ ______; /archives//html/Towertalk/2010-10/msg00028.html (7,513 bytes)
10. Re: [TowerTalk] Tower Detuning (score: 1): Author: David Gilbert <xdavid@cis-broadband.com>; Date: Tue, 05 Oct 2010 10:10:44 -0700; I agree ... one turn through a core is insufficient on 160m. Using clamp-ons can be useful in other semi-similar situations, though. A couple of years ago afriend of mine, K9RX, was having significan; /archives//html/Towertalk/2010-10/msg00029.html (8,403 bytes)
11. Re: [TowerTalk] Tower Detuning (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Tue, 05 Oct 2010 11:02:41 -0700; That worked for two very important reasons. First, the frequency of interest was much higher (20-30 MHz), and second, he used multiple clamp-ons. It's also important to realize that at these frequenc; /archives//html/Towertalk/2010-10/msg00030.html (8,920 bytes)
12. Re: [TowerTalk] Tower Detuning (score: 1): Author: "Michael Baker" <k7dd@cox.net>; Date: Tue, 5 Oct 2010 11:33:22 -0700; OK, well that raises another question. If a clamp on bead works with a single cable and a single turn, why doesn't it work with a Tower? Granted, on zig zag reinforcing on the tower, they would also; /archives//html/Towertalk/2010-10/msg00031.html (10,240 bytes)
13. Re: [TowerTalk] Tower Detuning (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Tue, 05 Oct 2010 12:16:06 -0700; IT DOES NOT WORK ON A TOWER OR A GUY WIRE on 160M. Go back and STUDY what I wrote. And study the material on ferrites and ferrite chokes in http://audiosystemsgroup.com/RFI-Ham.pdf It also does not w; /archives//html/Towertalk/2010-10/msg00032.html (9,134 bytes)
14. Re: [TowerTalk] Tower Detuning (score: 1): Author: David Gilbert <xdavid@cis-broadband.com>; Date: Tue, 05 Oct 2010 12:59:37 -0700; Well, as Jim pointed out (and as I should have) the operating frequency was much higher (12 to 15 times higher), and we used three clamp-ons instead of one. To a first order approximation (I didn't l; /archives//html/Towertalk/2010-10/msg00033.html (12,051 bytes)
15. Re: [TowerTalk] Tower Detuning (score: 1): Author: "Mark Robinson" <markrob@mindspring.com>; Date: Tue, 5 Oct 2010 20:10:15 -0400; If he hung some capacitance hats off the top of the tower, would that work. Maybe something to try. Mark N1UK _______________________________________________ _________________________________________; /archives//html/Towertalk/2010-10/msg00035.html (13,655 bytes)
16. Re: [TowerTalk] Tower Detuning (score: 1): Author: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>; Date: Tue, 05 Oct 2010 23:29:02 -0400; Replace those conductive guy lines with Phillystran? 73 Roger (K8RI) _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@c; /archives//html/Towertalk/2010-10/msg00036.html (14,736 bytes)
17. Re: [TowerTalk] Tower Detuning (score: 1): Author: "Mark Robinson" <markrob@mindspring.com>; Date: Wed, 6 Oct 2010 11:48:30 -0400; Yes I enjoyed working with the Phillystran...easy to cut and much lighter to pull up the tower. Getting the big grips to seat at the end was a little more difficult but not too bad after my learning; /archives//html/Towertalk/2010-10/msg00041.html (16,833 bytes)

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