Search String: Display: Description: Sort:

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+160\s+GP\s+Choke\s*$/: 13 ]

Total 13 documents matching your query.

1. Topband: 160 GP Choke (score: 1)
Author: Cqtestk4xs--- via Topband <topband@contesting.com>
Date: Mon, 29 Sep 2014 12:49:10 -0400
Thanks to all who responded. One of the suggestions was to wrap about 40-45 turns of RG8X mini on a PVC core with a diameter of 4 inches....lightweight and easy. Part two was to ground the braid of t
/archives//html/Topband/2014-09/msg00162.html (6,593 bytes)

2. Re: Topband: 160 GP Choke (score: 1)
Author: wb6rse1@mac.com
Date: Mon, 29 Sep 2014 10:43:38 -0700
Bill - An effective common-mode choke can be made with 17 turns of RG58-coax wound on to an Amidon FT240-31 core. See: www.karinya.net/g3txq/chokes/ GL - Steve WB6RSE What do you think? Bill K4XS ___
/archives//html/Topband/2014-09/msg00164.html (6,794 bytes)

3. Re: Topband: 160 GP Choke (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Mon, 29 Sep 2014 11:56:22 -0700
It's not an Amidon core, it's a Fair-Rite core. It's a LOT cheaper when you buy from a Fair-Rite distributor. See Appendix One of k9yc.com/RFI-Ham.pdf 73, Jim K9YC _________________ Topband Reflector
/archives//html/Topband/2014-09/msg00165.html (7,451 bytes)

4. Re: Topband: 160 GP Choke (score: 1)
Author: "Tom W8JI" <w8ji@w8ji.com>
Date: Mon, 29 Sep 2014 15:13:42 -0400
If it were my system, I would use an air core choke like you posted and ground the feedline where it reaches earth. The nice thing is you can install the choke right at ground level with no ill effec
/archives//html/Topband/2014-09/msg00166.html (8,474 bytes)

5. Re: Topband: 160 GP Choke (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Mon, 29 Sep 2014 16:31:22 -0500
Bill, Photos of the common-mode choke at the base of mine ( http://www.w0btu.com/160_meters.html#inv-l_antenna) are at http://www.w0btu.com/files/antenna/160m_inv-L It's 6 turns of F-6 coax through f
/archives//html/Topband/2014-09/msg00167.html (7,348 bytes)

6. Re: Topband: 160 GP Choke (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Mon, 29 Sep 2014 15:44:15 -0700
My pdf calls for a lot more turns than that for 160M, but it ain't broke, don't fix it. :) 73, Jim _________________ Topband Reflector Archives - http://www.contesting.com/_topband
/archives//html/Topband/2014-09/msg00168.html (7,702 bytes)

7. Re: Topband: 160 GP Choke (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Mon, 29 Sep 2014 21:00:23 -0500
o.d. #31 toroidal cores." Looks like it could stand one more core and one more turn, if I only used it on 160 and 80. 73, Mike www.w0btu.com _________________ Topband Reflector Archives - http://www
/archives//html/Topband/2014-09/msg00169.html (8,076 bytes)

8. Re: Topband: 160 GP Choke (score: 1)
Author: Dan Maguire via Topband <topband@contesting.com>
Date: Mon, 29 Sep 2014 21:13:25 -0700
W0BTU was kind enough to include a link to his inverted-L EZNEC model so I added that to a thread over on eHam which discusses using a "dual-band autopilot" matching network, in this case using the i
/archives//html/Topband/2014-09/msg00170.html (7,938 bytes)

9. Re: Topband: 160 GP Choke (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Tue, 30 Sep 2014 00:02:13 -0700
o.d. #31 toroidal cores." Looks like it could stand one more core and one more turn, if I only used it on 160 and 80. You must have an old version of it -- the latest is summer 2010, and that sentenc
/archives//html/Topband/2014-09/msg00171.html (9,136 bytes)

10. Re: Topband: 160 GP Choke (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Tue, 30 Sep 2014 09:44:20 -0700
No. I wrote badly. Measure out two 5 feet lengths of enameled wire. Tape them together (a single wrap of tape every 5 inches or so) and wind that pair of wires 16 turns around a single core. Connect
/archives//html/Topband/2014-09/msg00175.html (9,068 bytes)

11. Re: Topband: 160 GP Choke (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Fri, 3 Oct 2014 02:58:42 -0500
That is the design that I was originally going to use, except that I would change it slightly because I use all 75 ohm coax. Anyway, what is the advantage over one made with coax? Better bandwidth, I
/archives//html/Topband/2014-10/msg00004.html (7,785 bytes)

12. Re: Topband: 160 GP Choke (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Mon, 06 Oct 2014 01:29:47 -0700
Yes, the advantages of THHN are better bandwidth, and a closer Zo match to a high dipole. Jerry Sevick wrote about Zo of parallel wire line chokes, and had established the Zo values I noted. Many yea
/archives//html/Topband/2014-10/msg00008.html (8,033 bytes)

13. Re: Topband: 160 GP Choke (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Mon, 6 Oct 2014 04:38:01 -0500
And --as I remembered a few milliseconds after I replied-- only ONE core. 73, Mike www.w0btu.com _________________ Topband Reflector Archives - http://www.contesting.com/_topband
/archives//html/Topband/2014-10/msg00009.html (7,921 bytes)

Current List: 1 - 13
Page: [1]
This search system is powered by Namazu