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Total 47 documents matching your query.

1. Topband: Shunt Fed Tower (score: 1): Author: nmt at at-communication.com (Nodir M. Tursoon-Zadeh); Date: Mon Feb 3 06:16:02 2003; I was convinced to operate in CQ WW 160 SSB as well and planning some antenna project. I would like to get in touch with Hams regarding Shunt Fed Tower. I would like to try this as well. I am sure th; /archives//html/Topband/2003-02/msg00022.html (6,685 bytes)
2. Topband: shunt fed tower (score: 1): Author: k9ot@mhtc.net (Paul DeWitte K9OT); Date: Wed, 1 Jan 2003 13:13:37 -0600; I would like to put up something permanent for 160. I have a 3el 30m beam that I would also like to put up. If I put the beam on 90ft of tower and shunt fed it how would the 2-1 band width compare to; /archives//html/Topband/2003-01/msg00009.html (6,428 bytes)
3. TopBand: Shunt fed tower (score: 1): Author: PRICE.SMITH@worldnet.att.net (Harold Smith); Date: Tue, 26 Nov 1996 22:40:59 +0000; Hello Jim: With a flat SWR on 160, I think something must be wrong. I shunt-feed an 80ft tower with a 5 el 20 mtr yagi at 80ft, 15 mtr 3 el at 90 ft and 10 mtr el at 100 ft. My shunt feed is tapped a; /archives//html/Topband/1996-11/msg00388.html (7,365 bytes)
4. Topband: Shunt Fed Tower (score: 1): Author: "Stan Stockton" <stan@aqity.org>; Date: Tue, 20 Dec 2005 09:23:13 -0600; All of my reading materials are at my station and to save a trip want to ask if someone has a general idea off the top of their head what will be required to feed (for 160M) a 60 foot 25G tower that; /archives//html/Topband/2005-12/msg00257.html (7,757 bytes)
5. Re: Topband: Shunt Fed Tower (score: 1): Author: "K9AY" <k9ay@k9ay.com>; Date: Tue, 20 Dec 2005 10:26:38 -0600; ____ At 60 feet, a shunt wire should go all the way to the top. Two wires spaced the width of the tower face will improve the bandwidth, especially if they are installed more than a foot away from t; /archives//html/Topband/2005-12/msg00259.html (8,759 bytes)
6. Topband: Shunt Fed Tower (score: 1): Author: John Cowan <w0tmm@yahoo.com>; Date: Mon, 20 Nov 2006 03:58:18 -0800 (PST); I have buried about 18 radials now and have my shunt fed tower up and going. For the time being I am tuning it through my Palstar tuner. It tunes up with a 1.7 SWR on 1.8 MHz and 1.4 SWR on 2.0 MHz.; /archives//html/Topband/2006-11/msg00123.html (7,302 bytes)
7. Re: Topband: Shunt Fed Tower (score: 1): Author: Earl W Cunningham <k6se@juno.com>; Date: Mon, 20 Nov 2006 09:49:53 -0800; "I have buried about 18 radials now and have my shunt fed tower up and going. For the time being I am tuning it through my Palstar tuner. It tunes up with a 1.7 SWR on 1.8 MHz and 1.4 SWR on 2.0 MHz.; /archives//html/Topband/2006-11/msg00129.html (7,916 bytes)
8. Topband: Shunt Fed Tower (score: 1): Author: "mike stokes" <mike9v@gmail.com>; Date: Fri, 10 Oct 2008 22:05:19 -0400; I plan on shunt feeding my 88' Rohn 45 Tower for 160M. It has 12 feet of mast out the top. The only antenna is an 40M Inverted Vee @ 80' I have plans to put up 20 & 40 Monobanders and possibly raise; /archives//html/Topband/2008-10/msg00086.html (6,757 bytes)
9. Re: Topband: Shunt Fed Tower (score: 1): Author: "Herbert L. Schoenbohm" <herbs@vitelcom.net>; Date: Sat, 11 Oct 2008 07:54:33 -0400; 1. Make sure the inverted V is not going to interact and distort the vertical TOA. 2. Try to at least get a 30 foot horizontal boom on the mast in the mean time. This will bring you very close to a 1; /archives//html/Topband/2008-10/msg00088.html (7,610 bytes)
10. Re: Topband: Shunt Fed Tower (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Sat, 11 Oct 2008 08:00:49 -0700; Use one of my coaxial chokes (use the instructions for 80M-160M) on the feedline of the 40M antenna, placing it roughly halfway between the top of the antenna and the earth. This will take the feedli; /archives//html/Topband/2008-10/msg00090.html (8,453 bytes)
11. Topband: Shunt Fed Tower (score: 1): Author: Stan Stockton <k5go@cox.net>; Date: Tue, 09 Dec 2008 04:56:38 -0800; I am not an expert by any means, but believe the example of KG8CO who has a 125 foot tower with the M2 40M Yagi would not be too tall and would work well. W8LRL uses a 200 Foot tower and didn't put u; /archives//html/Topband/2008-12/msg00108.html (6,941 bytes)
12. Re: Topband: Shunt Fed Tower (score: 1): Author: W8AV@aol.com; Date: Tue, 9 Dec 2008 09:57:06 EST; Just an FYI, I have a 140 footer here with an 8' mast that sticks out of the top. The tower has a 205BAS at the top with a 2 ele Mosley 40 meter beam about 10' under it. My tower, however, is series; /archives//html/Topband/2008-12/msg00115.html (7,137 bytes)
13. Re: Topband: Shunt Fed Tower (score: 1): Author: Ken Brown <ken.d.brown@hawaiiantel.net>; Date: Tue, 09 Dec 2008 07:22:27 -1000; Hi Goose, I suspect that your situation is fairly unique in that most who have towers do not have a base insulator. Even for those fortunate enough to have a base insulator, I wonder if shunt feeding; /archives//html/Topband/2008-12/msg00117.html (7,999 bytes)
14. Re: Topband: Shunt Fed Tower (score: 1): Author: Jon Zaimes AA1K <jz73@verizon.net>; Date: Thu, 11 Dec 2008 05:12:27 -0500; Yes, if other antennas are on the tower series feeding does require some big RFC. Mine are typically 75 to 100 feet of coax or rotor cable wound on 6-inch diameter PVC forms (size originally suggeste; /archives//html/Topband/2008-12/msg00127.html (7,473 bytes)
15. Topband: Shunt fed tower (score: 1): Author: "Phil LaMarche" <plamarc1@verizon.net>; Date: Thu, 22 Apr 2010 15:20:51 -0400; Several weeks ago Herb out lined his recommendations for shunt feeding a tower and recommended it over the inverted L. I have an L with the apex 55 ft. My tower is 72 ft with a large Mosley Pro 67C a; /archives//html/Topband/2010-04/msg00080.html (7,002 bytes)
16. Re: Topband: Shunt fed tower (score: 1): Author: Tree <tree@kkn.net>; Date: Fri, 23 Apr 2010 08:39:36 -0700; A 72 foot tower with a big antenna at the top is pretty much exactly what I was using for a transmit antenna to get over 200 countries from the west coast. It is very easy to make that work on 160 me; /archives//html/Topband/2010-04/msg00081.html (8,081 bytes)
17. Re: Topband: Shunt fed tower (score: 1): Author: "w8uvz" <w8uvz@voyager.net>; Date: Fri, 23 Apr 2010 11:54:38 -0400; Hi Phil There is an excellent article in Ham Radio May 1975 by John True, W4OQ on "shunt-feed systems for grounded vertical radiators". His system uses an omega match for matching the gamma rod (or w; /archives//html/Topband/2010-04/msg00082.html (8,873 bytes)
18. Re: Topband: Shunt fed tower (score: 1): Author: "Price Smith" <w0rihps@sbcglobal.net>; Date: Fri, 23 Apr 2010 19:50:49 -0500; Hello George and all. I have been shunt feeding my tower since 1991. It is is 80ft of Rohn 45G with a stack above. At 80ft is a Telrex 20M546 (20mtr 5el 46ft boom). Guy wires are Phillystrand. That m; /archives//html/Topband/2010-04/msg00084.html (8,750 bytes)
19. Re: Topband: Shunt fed tower (score: 1): Author: Herb Schoenbohm <herbs@surfvi.com>; Date: Sat, 24 Apr 2010 06:20:13 -0400; Using the other solid aluminum shield on discarded 3/4 inch CATV cable end runs (called by some 750 or .750) spaced 24 to 36 inches from a towers is a significant improvement over a single #8 wire. Y; /archives//html/Topband/2010-04/msg00085.html (7,600 bytes)
20. Re: Topband: Shunt fed tower (score: 1): Author: "Wayne Rogers" <n1wr@chesapeake.net>; Date: Sat, 24 Apr 2010 11:31:19 -0400; Herb: What do you mean "sweet point?" This has always been a mystery to me. I have a 90' tower with a TH-& etc on top that I am getting ready to feed. I have heard "feed it at the top (just under the; /archives//html/Topband/2010-04/msg00086.html (9,037 bytes)

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