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1. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>; Date: Tue, 11 Oct 2005 14:32:33 +0000; Sounds like the Orion may be sensitive to common mode RF and/or ten tec's fixed tuned input circuits in the centurion. If an 8' jumper is needed you would think they'd say that in the manual. The rea; /archives//html/TenTec/2005-10/msg00220.html (12,141 bytes)
2. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Henry Pfizenmayer" <pfizenmayer@worldnet.att.net>; Date: Tue, 11 Oct 2005 08:36:12 -0700; Hi Rob - Agree with most all your comments - As I dig into the Centurion deeper , there are a lot of corners cut that I would have done differently. For instance the meters are lousy - and I am sure; /archives//html/TenTec/2005-10/msg00221.html (12,400 bytes)
3. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Mike Hyder -N4NT-" <n4nt_m_o_hyder@charter.net>; Date: Tue, 11 Oct 2005 17:18:36 -0400; There is much anecdotal evidence that the type oscillation reported can be due to loose coax fittings -- fittings on jumpers that are not sufficiently tightened. Replacing the coax with one of a diff; /archives//html/TenTec/2005-10/msg00226.html (8,142 bytes)
4. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Henry Pfizenmayer" <pfizenmayer@worldnet.att.net>; Date: Tue, 11 Oct 2005 08:55:32 -0700; Sorry folks - I hit the wrong reply button - meant this to be to Rob . Hank _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailm; /archives//html/TenTec/2005-10/msg00227.html (7,747 bytes)
5. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>; Date: Tue, 11 Oct 2005 21:47:57 +0000; <<<Hi Rob - Agree with most all your comments - As I dig into the Centurion deeper , there are a lot of corners cut that I would have done differently. My biggest dissatisfaction is with the power su; /archives//html/TenTec/2005-10/msg00228.html (11,762 bytes)
6. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>; Date: Tue, 11 Oct 2005 22:05:16 +0000; <<<There is much anecdotal evidence that the type oscillation reported can be due to loose coax fittings -- fittings on jumpers that are not sufficiently on only one band? I doubt it. rob/k5uj ______; /archives//html/TenTec/2005-10/msg00229.html (8,258 bytes)
7. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Mike Hyder -N4NT-" <n4nt_m_o_hyder@charter.net>; Date: Tue, 11 Oct 2005 18:13:14 -0400; I said, "I am not saying that cable length makes no difference, just that my experience has shown the trouble to be loose fittings." If you want to take issue with me, read the whole thing. One thing; /archives//html/TenTec/2005-10/msg00230.html (8,613 bytes)
8. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>; Date: Tue, 11 Oct 2005 23:38:21 +0000; <<<There is much anecdotal evidence that the type oscillation reported can be due to loose coax fittings -- fittings on jumpers that are not sufficiently tightened. Replacing the coax with one of a d; /archives//html/TenTec/2005-10/msg00232.html (8,768 bytes)
9. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Mike Hyder -N4NT-" <n4nt_m_o_hyder@charter.net>; Date: Tue, 11 Oct 2005 20:53:17 -0400; No, I do not believe that the problem's occuring on only one band rules out loose cable fittings. Mike N4NT <<<There is much anecdotal evidence that the type oscillation reported can be due to loose; /archives//html/TenTec/2005-10/msg00234.html (8,917 bytes)
10. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Jim Dunbar" <jdunbar28@mchsi.com>; Date: Wed, 12 Oct 2005 04:55:22 -0700; Rob, Excellent RF theory lesson on Amplifier design considerations. It looks like proper tuned input sections on each band can really make a difference in amplifier designs, especially Class AB2 Grou; /archives//html/TenTec/2005-10/msg00242.html (13,958 bytes)
11. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>; Date: Wed, 12 Oct 2005 21:30:36 +0000; <<<No, I do not believe that the problem's occuring on only one band rules out loose cable fittings.>>> Hi Mike, Please explain how this can be--I'm not getting it. It seems to me that a loose feed c; /archives//html/TenTec/2005-10/msg00243.html (9,019 bytes)
12. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>; Date: Wed, 12 Oct 2005 21:35:49 +0000; Hi Jim, <<<Rob, Excellent RF theory lesson on Amplifier design considerations.>>> ur welcome--glad to forward that along. <<<It looks like proper tuned input sections on each band can really make a d; /archives//html/TenTec/2005-10/msg00244.html (8,758 bytes)
13. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Mike Hyder -N4NT-" <n4nt_m_o_hyder@charter.net>; Date: Wed, 12 Oct 2005 18:38:23 -0400; You may have experienced RF in your shack over the years. A microphone can burn your face or a key your fingers. This trouble usually depends on the band in use -- I might have high levels of RF in m; /archives//html/TenTec/2005-10/msg00245.html (10,113 bytes)
14. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>; Date: Thu, 13 Oct 2005 18:00:33 +0000; Hi Mike, My feeling is that this was a different type of problem. I guess we'll never know for sure. The kind of symptom you describe (RF feedback) is something i have experienced, but I have never s; /archives//html/TenTec/2005-10/msg00264.html (10,035 bytes)
15. Re: [TenTec] Centurion 40 m. oscillation (score: 1): Author: "Mike Hyder -N4NT-" <n4nt_m_o_hyder@charter.net>; Date: Thu, 13 Oct 2005 14:17:50 -0400; Maybe by now my mission will have been accomplished. If a fellow has that sort of trouble he'll first check to see that his connectors are tight. Mike N4NT Hi Mike, My feeling is that this was a diff; /archives//html/TenTec/2005-10/msg00266.html (10,665 bytes)

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