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Total 23 documents matching your query.

1. [Amps] GU-84B Cooling (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Tue, 19 Jul 2005 14:53:19 -0500; On a webpage somewhere, I cant remember now where, I read about the GU-84B (4CX1600) having an undersized radiator. I think it was on a Russian amateur website. What I had read was this tube was actu; /archives//html/Amps/2005-07/msg00215.html (7,499 bytes)
2. Re: [Amps] GU-84B Cooling (score: 1): Author: Dan K9ZF <n9rla@yahoo.com>; Date: Tue, 19 Jul 2005 15:15:14 -0500; Water cool it? 73 Dan -- K9ZF /R no budget Rover **QRP-l #1269 Check out the Rover Resource Page at: <http://www.qsl.net/n9rla> List Administrator for: InHam+grid-loc+ham-books ______________________; /archives//html/Amps/2005-07/msg00216.html (6,956 bytes)
3. Re: [Amps] GU-84B Cooling (score: 1): Author: gdaught6@stanford.edu; Date: Tue, 19 Jul 2005 15:47:47 -0700; The radiator is comparatively small. But why not take to heart what Rich, AG6K, says? "The only time there's too much cooling air is when it blows the tube out of the socket!" (or something like that; /archives//html/Amps/2005-07/msg00218.html (7,906 bytes)
4. Re: [Amps] GU-84B Cooling (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Wed, 20 Jul 2005 03:12:04 -0500; Dick, I'm not saying it's a bad tube, and dont want none to think that. I just dont want anyone to undercool the tube so it will last. Who knows, the 4CX1500 may have an over-sized radiator too! Abou; /archives//html/Amps/2005-07/msg00219.html (10,970 bytes)
5. Re: [Amps] GU-84B Cooling (score: 1): Author: R.Measures <r@somis.org>; Date: Wed, 20 Jul 2005 04:02:10 -0700; An IR thermometer would work. Richard L. Measures, AG6K, 805.386.3734. www.somis.org _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/; /archives//html/Amps/2005-07/msg00220.html (11,738 bytes)
6. Re: [Amps] GU-84B Cooling (score: 1): Author: R.Measures <r@somis.org>; Date: Wed, 20 Jul 2005 04:07:27 -0700; Large electric generators are cooled with hydrogen gas, which removes heat c. 5-times more efficiently than air-cooling. Richard L. Measures, AG6K, 805.386.3734. www.somis.org _______________________; /archives//html/Amps/2005-07/msg00221.html (8,823 bytes)
7. Re: [Amps] GU-84B Cooling (score: 1): Author: pa3duv@planet.nl; Date: Wed, 20 Jul 2005 13:47:04 +0200; Van pa3duv@planet.nl Verstuurd op woensdag, juli 20, 2005 11:49 am Aan Will Matney <craxd@engineer.com> Cc Bcc Onderwerp Re: [Amps] GU-84B Cooling Will, Perhaps I could measure the anode cooler tempe; /archives//html/Amps/2005-07/msg00222.html (14,013 bytes)
8. Re: [Amps] GU-84B Cooling (score: 1): Author: TexasRF@aol.com; Date: Wed, 20 Jul 2005 07:56:21 EDT; Dick, I'm not saying it's a bad tube, and dont want none to think that. I just dont want anyone to undercool the tube so it will last. Who knows, the 4CX1500 may have an over-sized radiator too! Abou; /archives//html/Amps/2005-07/msg00223.html (8,722 bytes)
9. Re: [Amps] GU-84B Cooling (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Wed, 20 Jul 2005 13:56:01 +0200; oops.. UV should read IR... Thanks Rich. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2005-07/msg00224.html (15,789 bytes)
10. Re: [Amps] GU-84B Cooling (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Wed, 20 Jul 2005 07:00:11 -0500; Yup, I'd imagine it would work too if it will pinpoint the anode surface as I'm not sure what the minimum distance is and the spot size is it measures. The reason being is I figure the anode body wou; /archives//html/Amps/2005-07/msg00225.html (14,402 bytes)
11. [Amps] GU-84b Cooling (score: 1): Author: "Thomas Hix" <w4th@hotmail.com>; Date: Wed, 20 Jul 2005 07:23:47 -0500; I read this today on the amps reflector. "On a webpage somewhere, I cant remember now where, I read about the GU-84B (4CX1600) having an undersized radiator" The GU-84B tube is NOT the same tube as t; /archives//html/Amps/2005-07/msg00226.html (36,959 bytes)
12. Re: [Amps] GU-84B Cooling (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Wed, 20 Jul 2005 07:33:04 -0500; Gerald, Yea, as long as it runs within the ratings, it'd be ok. That makes one wonder if Eimac might have made an over-kill on the radiator of the 4CX1500. I'd have to see what Eimacs temp specs are; /archives//html/Amps/2005-07/msg00227.html (11,252 bytes)
13. Re: [Amps] GU-84b Cooling (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Wed, 20 Jul 2005 07:51:08 -0500; Tom, Doing a Google search, I found several pages refering to the GU-84B as a GU84B/4CX1600 just then, and then also seen some refering to it as a 4CX2500. The very first hits I list below; http://ww; /archives//html/Amps/2005-07/msg00228.html (45,312 bytes)
14. Re: [Amps] GU-84B Cooling (score: 1): Author: "Roy Koeppe" <royanjoy@ncn.net>; Date: Wed, 20 Jul 2005 08:00:41 -0500; Just FYI about... "Even though the tube is cheaper than some others, it's still expensive if you have to re-tube all the time." (etc). I'm not sure how often 'all the time' is, but I've been using my; /archives//html/Amps/2005-07/msg00229.html (8,463 bytes)
15. Re: [Amps] GU-84B Cooling (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Wed, 20 Jul 2005 15:53:37 +0200; Some info from: http://www.angelfire.com/nb/ni4l/gu84b.html The GU-84B is a ceramic-metal forced-air cooled tetrode intended for use in power amplifiers with distributed amplification and for SSB-sig; /archives//html/Amps/2005-07/msg00230.html (13,342 bytes)
16. Re: [Amps] GU-84B Cooling (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Wed, 20 Jul 2005 09:25:16 -0500; Dick, Thanks for letting me know. Evidentally, some on the net are confused about the tube numbers as per the Google searches I done. When doing one for a GU-84B, the very first listing was saying GU; /archives//html/Amps/2005-07/msg00231.html (15,880 bytes)
17. Re: [Amps] GU-84B Cooling (score: 1): Author: "Gary Smith" <wa6fgi@sbcglobal.net>; Date: Wed, 20 Jul 2005 07:29:57 -0700; To the list: In this thread is the mention of IR thermometers. As I fly r/c airplanes, such thermometers for reading cylinder head temps have found their way into my hobby. Raytek is one brand name,; /archives//html/Amps/2005-07/msg00232.html (17,016 bytes)
18. Re: [Amps] GU-84B Cooling (score: 1): Author: "Gary Smith" <wa6fgi@sbcglobal.net>; Date: Wed, 20 Jul 2005 07:32:23 -0700; my error, the url is www.towerhobbies.com Gary -- Original Message -- From: Gary Smith To: PA3DUV ; amps@contesting.com Sent: Wednesday, July 20, 2005 7:29 AM Subject: Re: [Amps] GU-84B Cooling To th; /archives//html/Amps/2005-07/msg00233.html (18,026 bytes)
19. [Amps] GU-84B cooling (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Wed, 20 Jul 2005 09:52:45 -0500; All, I went by cqham.ru and looked around for the articla about the GU-84B but couldn't find it. That's where I thought I might have seen it but evidently wasn't. I was at several other sites that da; /archives//html/Amps/2005-07/msg00234.html (8,383 bytes)
20. [Amps] GU-84B cooling (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Wed, 20 Jul 2005 09:53:35 -0500; All, I went by cqham.ru and looked around for the articla about the GU-84B but couldn't find it. That's where I thought I might have seen it but evidently wasn't. I was at several other sites that da; /archives//html/Amps/2005-07/msg00235.html (8,080 bytes)

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