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Total 7 documents matching your query.

1. [RFI] A quick Question about CMC placement (score: 1): Author: Kim Elmore <cw_de_n5op@sbcglobal.net>; Date: Mon, 28 Jun 2021 11:30:46 -0500; Having just come off of filed day, the value of a CMC was, for the umpteenth time, demonstrated in the most practical sense. We were operating an FTDX5000MP for the CW station. We probably had the be; /archives//html/RFI/2021-06/msg00073.html (8,983 bytes)
2. Re: [RFI] A quick Question about CMC placement (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Mon, 28 Jun 2021 10:40:20 -0600; Best is to insert two CMCs. One at the feedpoint of the dipole or beam feedpoint and the second at the shack end of the coaxial transmission line. They are also good for keeping local RFI from the re; /archives//html/RFI/2021-06/msg00074.html (10,238 bytes)
3. Re: [RFI] A quick Question about CMC placement (score: 1): Author: Edward Mccann via RFI <rfi@contesting.com>; Date: Mon, 28 Jun 2021 09:46:15 -0700; Absolutely it matters! Best placement is at the feedpoint, if the antenna can stand the weight. Second best placement is at the feedpoint and Another at the shack window. Think of that span of coax f; /archives//html/RFI/2021-06/msg00075.html (9,626 bytes)
4. Re: [RFI] A quick Question about CMC placement (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Mon, 28 Jun 2021 10:13:22 -0700; No question -- at the antenna feedpoint. Explanation in the choke cookbook at k9yc.com/publish.htm 73, Jim K9YC _______________________________________________ RFI mailing list RFI@contesting.com htt; /archives//html/RFI/2021-06/msg00076.html (8,156 bytes)
5. Re: [RFI] A quick Question about CMC placement (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Mon, 28 Jun 2021 10:15:06 -0700; They are also good for keeping local RFI from the receiver. I recently ran another test without / with the CMC only in the shack at the end of the feedline. This time I chose 20-meters as my 450-foot; /archives//html/RFI/2021-06/msg00077.html (8,706 bytes)
6. Re: [RFI] A quick Question about CMC placement (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Mon, 28 Jun 2021 11:45:36 -0600; There is no true "ground" for RF fields. Only returns. The space station doesn't require a "ground" for comms to/from earth stations. The Crab Nebula does not require a "ground" to fill deep space wi; /archives//html/RFI/2021-06/msg00078.html (9,594 bytes)
7. Re: [RFI] A quick Question about CMC placement (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Mon, 28 Jun 2021 13:40:23 -0700; Grounding and bonding is NOT about an earth connection, but rather the proper bonding together of all earth electrodes as required both by Electrical Codes and good engineering practice, the proper b; /archives//html/RFI/2021-06/msg00079.html (10,408 bytes)

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