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Total 14 documents matching your query.

1. [TowerTalk] Resonant boom (score: 1): Author: Stan Stockton <k5go@cox.net>; Date: Sat, 23 Oct 2010 20:04:03 -0500; Anyone by chance have an easier to accomplish idea other than one I remember being suggested to someone else with a similar problem - fishing a wire through a hole near the center of the boom and let; /archives//html/Towertalk/2010-10/msg00286.html (7,101 bytes)
2. Re: [TowerTalk] Resonant boom (score: 1): Author: David Gilbert <xdavid@cis-broadband.com>; Date: Sat, 23 Oct 2010 20:37:12 -0700; Hi, Stan. How about adding some "spikes" (like a capacity hat) to the end of the boom to add capacitive loading? 73, Dave AB7E _______________________________________________ ________________________; /archives//html/Towertalk/2010-10/msg00289.html (8,284 bytes)
3. [TowerTalk] Resonant boom (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Sat, 23 Oct 2010 21:10:35 -0700; Anyone by chance have an easier to accomplish idea other than one I remember being suggested to someone else with a similar problem - fishing a wire through a hole near the center of the boom and let; /archives//html/Towertalk/2010-10/msg00290.html (9,678 bytes)
4. Re: [TowerTalk] Resonant boom (score: 1): Author: "Ron W8RJL" <youngron@verizon.net>; Date: Sun, 24 Oct 2010 00:22:43 -0400; Why not linear load the boom. Use a conductive standoff at the end of the boom, connect a wire to the top of the standoff and stretch the wire back toward the mast area. Use insulated stand offs as n; /archives//html/Towertalk/2010-10/msg00291.html (9,723 bytes)
5. Re: [TowerTalk] Resonant boom (score: 1): Author: Stan Stockton <k5go@cox.net>; Date: Sun, 24 Oct 2010 01:26:14 -0500; Thanks for all the responses! Still looking for something I can do, even temporarily, without taking it down. Thanks...Stan, K5GO Sent from Stan's IPhone _____________________________________________; /archives//html/Towertalk/2010-10/msg00293.html (8,641 bytes)
6. Re: [TowerTalk] Resonant boom (score: 1): Author: "DF3KV" <df3kv@t-online.de>; Date: Sun, 24 Oct 2010 11:59:53 +0200; Yes, that should work. You could also detune the boom by connecting a capacitor across part of the boom. I built a new 40m FS yagi (12m boom) at 38m, about 50m apart is my shorty-forty at 18m height.; /archives//html/Towertalk/2010-10/msg00294.html (11,003 bytes)
7. Re: [TowerTalk] Resonant boom (score: 1): Author: TexasRF@aol.com; Date: Sun, 24 Oct 2010 08:33:58 EDT; Since the 20m elements are insulated, would installing a ground strap to an element near the boom detune things enough to work? Could an additional "dummy" element or elements be added temporarily fo; /archives//html/Towertalk/2010-10/msg00295.html (9,656 bytes)
8. Re: [TowerTalk] Resonant boom (score: 1): Author: <john@kk9a.com>; Date: Sun, 24 Oct 2010 11:03:25 -0400; That interaction is incredible since the beams are 186' apart. I don't recall my 60' boom yagis causing a 40m problem at my previous QTH with 20' spacing and I'm not sure yet if it's a problem at my; /archives//html/Towertalk/2010-10/msg00297.html (9,280 bytes)
9. Re: [TowerTalk] Resonant boom (score: 1): Author: Stan Stockton <k5go@cox.net>; Date: Sun, 24 Oct 2010 10:58:19 -0500; Installing dummy elements out as far as I could reach was what I was going to try first but dont know whether the would be far enough out to do the trick. Yesterday I looked to see where the nearest; /archives//html/Towertalk/2010-10/msg00301.html (12,547 bytes)
10. Re: [TowerTalk] Resonant boom (score: 1): Author: <john@kk9a.com>; Date: Sun, 24 Oct 2010 17:21:08 -0400; Stan, you just have too many long boom antennas! It should not be that difficult to model the system and then you can experiment and see how to fix the problem. The 20m beam at 70' with nothing below; /archives//html/Towertalk/2010-10/msg00303.html (9,151 bytes)
11. [TowerTalk] Resonant boom (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Sun, 24 Oct 2010 19:22:10 -0700; That interaction is incredible since the beams are 186' apart. I don't recall my 60' boom yagis causing a 40m problem at my previous QTH with 20' spacing and I'm not sure yet if it's a problem at my; /archives//html/Towertalk/2010-10/msg00308.html (10,626 bytes)
12. Re: [TowerTalk] Resonant boom (score: 1): Author: "Stan Stockton" <k5go@cox.net>; Date: Sun, 24 Oct 2010 22:08:31 -0500; John, You may be right.... I have an issue with this particular antenna since it folded my 35 year old gin pole when the antenna was almost at the top of the tower going up 18 months ago - not a fun; /archives//html/Towertalk/2010-10/msg00309.html (12,281 bytes)
13. Re: [TowerTalk] Resonant boom (score: 1): Author: <john@kk9a.com>; Date: Sun, 24 Oct 2010 23:28:47 -0400; I was not suggesting to insulate the boom from the mast. My suggestion was to install insulating sections on the boom so you electrically have two or three boom sections or perhaps to use fiberglass; /archives//html/Towertalk/2010-10/msg00310.html (9,500 bytes)
14. Re: [TowerTalk] Resonant boom (score: 1): Author: <john@kk9a.com>; Date: Tue, 26 Oct 2010 21:44:28 -0400; I pulled my 75' high 60' boom beam up and down several times in the last few years to make adjustments and finally to add 40m elements to the boom. Mine is not on top of a mast and nothing is below s; /archives//html/Towertalk/2010-10/msg00360.html (13,064 bytes)

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