- 41. Re: [Amps] Anodizing aluminum, painting etc. (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Fri, 18 Aug 2006 07:15:16 -0700 (PDT)
- Martin, I started the thread by asking about black paint on heat sinks. I think, along with the other great educational info I've seen in this thread, you have answered any remaining questions that m
- /archives//html/Amps/2006-08/msg00542.html (11,495 bytes)
- 42. Re: [Amps] HV transformers I want to series primary and parallelsecondary (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Fri, 18 Aug 2006 15:13:00 -0700 (PDT)
- Hello, The current going through each primary is exactly the same because they are in series. As the current increases in one transformer (primary) it increases in the other transformer (primary) by
- /archives//html/Amps/2006-08/msg00549.html (9,995 bytes)
- 43. Re: [Amps] HV transformers I want to series primaryandparallelsecondary (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Fri, 18 Aug 2006 22:10:22 -0700 (PDT)
- David, If you look at the West Coast radio handbook in the power supplies section it says that you can either parallel or series transformers of the same type. I have also been on many web pages that
- /archives//html/Amps/2006-08/msg00555.html (11,801 bytes)
- 44. Re: [Amps] State of the Amp (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Tue, 22 Aug 2006 05:52:04 -0700 (PDT)
- You can buy factory built GS-35 amps but not US made. I have seen Australian factory made, some former easter bloc factory made (very small quantity), I think there is a UK factory made as well. 73,
- /archives//html/Amps/2006-08/msg00590.html (8,542 bytes)
- 45. Re: [Amps] State of the Amp (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Tue, 22 Aug 2006 05:52:11 -0700 (PDT)
- You can buy factory built GS-35 amps but not US made. I have seen Australian factory made, some former easter bloc factory made (very small quantity), I think there is a UK factory made as well. 73,
- /archives//html/Amps/2006-08/msg00591.html (8,421 bytes)
- 46. [Amps] DB9 RF filter (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Tue, 5 Sep 2006 18:12:18 -0700 (PDT)
- Hello, I used to work with a high power HF system that tied into a LAN a couple of years ago. It used some HF email software from Harris and they supplied a DB9 filter that allowed you to remove the
- /archives//html/Amps/2006-09/msg00111.html (7,410 bytes)
- 47. Re: [Amps] QST, and class AB/F MOSFET amps (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Sun, 24 Dec 2006 21:36:16 -0800 (PST)
- Manfred, I have already worked out details for my liquid cooling scheme. I found a good source for a cold plate and recieved it. I had a guy help me in USA (I am overseas in Japan) with adaptors. The
- /archives//html/Amps/2006-12/msg00213.html (12,374 bytes)
- 48. Re: [Amps] QST, and class AB/F MOSFET amps (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Tue, 26 Dec 2006 05:16:27 -0800 (PST)
- Manfred, I was told that some of the high power devices have such a small footprint for their cooling that air cooling is not suitable. For the 100 watts per device, air cooling should be OK. I wante
- /archives//html/Amps/2006-12/msg00216.html (14,718 bytes)
- 49. [Amps] 4CX250 MSDS SHEET (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Tue, 11 Dec 2007 02:26:25 -0800 (PST)
- Hello, We have a piece of equipment at work with quite a few 4CX250M (Mobile version that is more rugged than the 4CX250R) tubes in the equipment. I was asked if the ceramic portion of the tube is be
- /archives//html/Amps/2007-12/msg00129.html (6,734 bytes)
- 50. Re: [Amps] Beryllium Oxide (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Wed, 12 Dec 2007 01:11:57 -0800 (PST)
- Clive, We do "drills" on our ship and an old drill is for broken tubes. The subject came up if we still have any tubes that, if broken, would require the old hazard spill kit that was put together fo
- /archives//html/Amps/2007-12/msg00137.html (8,203 bytes)
- 51. Re: [Amps] 4CX250 MSDS SHEET (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Wed, 12 Dec 2007 01:13:57 -0800 (PST)
- Pete, The only tubes I have seen with pink ceramic is the russian ones that I've bought off of Ebay and from friends. I have to wonder if the russian ones have BeO? 73, Mike Isn't BeO ceramic pink? 7
- /archives//html/Amps/2007-12/msg00138.html (8,402 bytes)
- 52. Re: [Amps] 4CX250 MSDS SHEET (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Wed, 12 Dec 2007 04:15:12 -0800 (PST)
- Ian, They are not coaxial based and have pins, I was typing from memory and they are 4CX250BM. They go to an HF amplifier group made by Marconi (7amp groups mean 280 of the tubes or 40 per amp group
- /archives//html/Amps/2007-12/msg00140.html (12,778 bytes)
- 53. [Amps] 4CX250M questions and MARCONI linear questions (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Sun, 2 Mar 2008 20:34:32 -0800 (PST)
- Hello, I have CC'd my military email address, please reply to me at that address of kendallm@lhd2.navy.mil I cannot check Yahoo while on the ship and it may be weeks before I can get on Yahoo again.
- /archives//html/Amps/2008-03/msg00028.html (7,393 bytes)
- 54. Re: [Amps] Source for QSK-1500 fuse lamp!! (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Thu, 5 Feb 2009 08:28:21 -0800 (PST)
- ALCON, I had one of those back in the 90's. I blew the fuse lamp when I had a SWR pop up that was too quick for the ALC to act. I called the company and was advised that if I took a Christmas t
- /archives//html/Amps/2009-02/msg00112.html (7,970 bytes)
- 55. Re: [Amps] Chinese Caps Defective @ RF (score: 1)
- Author: mike kendall <ke6cvh@yahoo.com>
- Date: Sat, 24 Mar 2012 01:00:06 -0700 (PDT)
- Jim, Isn't Y5T that is listed a class II ceramic? The NPO/N750/N1500 are all class I ceramics that won't age like the class II and IV do. Also, with the lesser classes, when you look at the cu
- /archives//html/Amps/2012-03/msg00252.html (11,290 bytes)
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