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21. [Amps] 3-500 / 4-400 cooling (09/10/2005) (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Sat, 28 Jan 2006 13:07:42 -0000; Good afternoon gentlemen. I refer to the above subject posting, and thought that the resolution of the problem might be of interest to the group. For those who did not see the original posting. Brief; /archives//html/Amps/2006-01/msg00640.html (10,253 bytes)
22. Re: [Amps] Serious transformer problem (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Sat, 1 Jul 2006 12:27:35 +0100; Hello Tom, I have been following this thread with interest, and I would just make this comment on your recommendation to dispense with the electrostatic shield.......Over the past year or so, I have; /archives//html/Amps/2006-07/msg00005.html (12,996 bytes)
23. Re: [Amps] Serious transformer problem (score: 1): Author: John E.Cleeve <g3jvc@jcleeve.idps.co.uk>; Date: Sat, 01 Jul 2006 21:00:06 +0100; Tom, these people may well be audiophiles, however their paper is entitled "Suppression of powerline noise, with isolation transformers" was presented by B.C.Gabrielson & M.J. Reimold at EMC Expo 87,; /archives//html/Amps/2006-07/msg00026.html (13,617 bytes)
24. Re: [Amps] off topic but here goes (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Thu, 28 Sep 2006 12:33:21 +0100; I suggest that you try the "photoEZ" craft system, which is based in the USA, but with EU distribution......sincerely, John G3JVC. _______________________________________________ Amps mailing list Am; /archives//html/Amps/2006-09/msg00340.html (8,872 bytes)
25. [Amps] QST (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Tue, 19 Dec 2006 15:35:49 -0000; _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2006-12/msg00169.html (8,323 bytes)
26. Re: [Amps] 3-500z - intermittent filament (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Thu, 8 Feb 2007 15:40:17 -0000; I would advise caution in resoldering the sleeved pins of the 3-500 et al tubes, for the Eimac spec. and the late Bill Orr, warned that the melting point of the solder used, could be very close to th; /archives//html/Amps/2007-02/msg00132.html (9,894 bytes)
27. Re: [Amps] General question on filament life (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Fri, 9 Feb 2007 00:05:25 -0000; I base my treatment of valve/tube heaters, on the way the filament life of 16mm cine projector high wattage bulbs could be considerably extended if they were brought up to full brightness slowly.....; /archives//html/Amps/2007-02/msg00145.html (13,137 bytes)
28. [Amps] Blocking capacity identity? (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Sun, 4 Nov 2007 12:14:13 -0000; Following the blocking capacitor thread, I wonder if any one can specify the RF current capability of a large ceramic disc capacitor that I have. The ceramic form colour is light brown, the dimension; /archives//html/Amps/2007-11/msg00052.html (7,155 bytes)
29. Re: [Amps] Vertex_Yaesu Merger (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Tue, 6 Nov 2007 10:42:05 -0000; Hello Peter, Storno was part of the Great Northern Telegraph Company, which does still exist, however it would appear that the "bean counters" have taken over. I have a lot of their line telegraph eq; /archives//html/Amps/2007-11/msg00074.html (9,027 bytes)
30. Re: [Amps] Silver (score: 1): Author: "John E. Cleeve"<g3jvc@jcleeve.idps.co.uk>; Date: Tue, 12 Feb 2008 18:42:56 +0000; Sorry to post this to the group, but my direct note to Mike was bounced by his spam stopper..... Hello Mike, I find your advice very interesting. However my reason for this note....I am not a chemist; /archives//html/Amps/2008-02/msg00060.html (8,486 bytes)
31. Re: [Amps] Looking for fan information (score: 1): Author: "John E. Cleeve"<g3jvc@jcleeve.idps.co.uk>; Date: Wed, 13 Feb 2008 16:18:02 +0000; I would suspect that the fan was originally intended for use with natural gas heating systems, since that is how the Precision Fans company was listed prior to their take over by Smiths Industries...; /archives//html/Amps/2008-02/msg00082.html (9,179 bytes)
32. Re: [Amps] Plate choke material.. (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Sun, 20 Jul 2008 10:06:53 +0100; Hello Bob, I suggest you try talking to your nearest scientific glass supply facility, glass tube for laboratory set ups, is available in many diameters and wall thickness. I am sure that they would; /archives//html/Amps/2008-07/msg00163.html (8,203 bytes)
33. Re: [Amps] Titan fan (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Sat, 6 Sep 2008 10:32:56 +0100; Perhaps if someone can provide the technical/physical specification of the original Titan OEM fan, an available, perhaps better, replacement could be found from the currently advertised fans, althoug; /archives//html/Amps/2008-09/msg00025.html (7,679 bytes)
34. Re: [Amps] Titan fan (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Sat, 6 Sep 2008 11:50:45 +0100; Further to my last comment regarding the specification for the OEM fan fitted to the Ten Tec Titan. I decided to "reverse engineer" the question, asking "what are the cooling requirements of 3CX800A7; /archives//html/Amps/2008-09/msg00026.html (10,378 bytes)
35. Re: [Amps] Titan fan (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Sat, 6 Sep 2008 13:14:03 +0100; Hello Dave, Yes, I think that you are correct; the figures would need amending for two tubes, and, I assume how the airflow is fed to the tube bases, that is, a single air chamber beneath two tube ba; /archives//html/Amps/2008-09/msg00027.html (7,861 bytes)
36. Re: [Amps] Vernier knobs? (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Sat, 3 Oct 2009 10:10:54 +0100; I think that Roger is referring to a device known in the UK as an "epicyclic" drive, or shaft coupler, which consisted of a quarter inch diameter knob shaft, with a flat reduction mechanism, about on; /archives//html/Amps/2009-10/msg00035.html (9,884 bytes)
37. Re: [Amps] Vernier knobs? (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Sat, 3 Oct 2009 17:03:26 +0100; Thanks Carl, Entering Jackson Brothers into Google brings up their catalogue, and the first item under "Drives" is the very mechanism I was attempting to describe in my response to Roger. Roger shoul; /archives//html/Amps/2009-10/msg00040.html (12,551 bytes)
38. [Amps] BNC HV connectors (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Wed, 13 Jan 2010 18:35:22 -0800; I have noticed that RS Components in the UK www.rswww.com <http://www.rswww.com/> carry the Radiall High Voltage/SHV PET 100 series coaxial high voltage chassis and cable connectors, which are rated; /archives//html/Amps/2010-01/msg00169.html (6,704 bytes)
39. Re: [Amps] Chimney's (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Thu, 14 Jan 2010 17:01:43 -0800; Possibly a cheaper alternative might be to talk to a hospital/chemistry laboratory glassware supplier to obtain a cut length of Pyrex glass tube of similar dimensions, the sharp edges are easily grou; /archives//html/Amps/2010-01/msg00185.html (9,606 bytes)
40. [Amps] Transformer 50/60hz (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Fri, 23 Apr 2010 20:18:31 +0100; Gentlemen, I would appreciate some advice from the transformer "boffins" out there. I am in process of refurbishing an Alpha 76PA, which came over from the USA. I noted, in a recent posting, a link w; /archives//html/Amps/2010-04/msg00620.html (7,346 bytes)

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