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1. [Amps] Burn-in for Eimac? (score: 1): Author: Bill Turner <dezrat1242@ispwest.com>; Date: Sun, 15 Jan 2006 16:36:20 -0800; Some of the Russian tubes require a burn-in period after years of storage to de-gas the vacuum. I've never heard of this applied to Eimac tubes, but should it be? In other words, is it a good idea fo; /archives//html/Amps/2006-01/msg00398.html (7,042 bytes)
2. Re: [Amps] Burn-in for Eimac? (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Mon, 16 Jan 2006 00:47:32 +0000; Bill, http://www.cpii.com/eimac/eiapps.htm Download AB21 - Conditioning of Large Radio-Frequency Power Tubes. It's a 700-kB PDF. 73, Jim, KR1S http://kr1s.kearman.com/ _______________________________; /archives//html/Amps/2006-01/msg00400.html (6,897 bytes)
3. Re: [Amps] Burn-in for Eimac? (score: 1): Author: Steve Thompson <g8gsq@eltac.co.uk>; Date: Mon, 16 Jan 2006 07:41:20 +0000; Debates will rage over whether it's necessary, but I can't see how it can do any harm. My first reaction is to think it's ready to go - but it's been cold for 8 years. I don't know if there's a risk; /archives//html/Amps/2006-01/msg00401.html (7,298 bytes)
4. Re: [Amps] Burn-in for Eimac? (score: 1): Author: GM3SEK <gm3sek@ifwtech.co.uk>; Date: Mon, 16 Jan 2006 08:35:16 +0000; That was my first reaction too. If you've hi-potted it and *measured* the leakage current, you have a lot more information than any date code could provide. Well there's a little project for you, Bil; /archives//html/Amps/2006-01/msg00402.html (8,145 bytes)
5. Re: [Amps] Burn-in for Eimac? (score: 1): Author: R.Measures <r@somis.org>; Date: Mon, 16 Jan 2006 00:57:44 -0800; Also, tossing salt over one's shoulder and knocking on wood couldn't hurt before firing up a tube that's been in storage. Richard L. Measures, AG6K, 805.386.3734. www.somis.org ______________________; /archives//html/Amps/2006-01/msg00403.html (8,254 bytes)
6. Re: [Amps] Burn-in for Eimac? (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Mon, 16 Jan 2006 15:41:36 +0100 (CET); hurt before firing up a tube that's been in storage.< Are you sure that you don't need to sacrifice a virgin as well? 73 Peter G3RZP _______________________________________________ Amps mailing list; /archives//html/Amps/2006-01/msg00405.html (7,417 bytes)
7. Re: [Amps] Burn-in for Eimac? (score: 1): Author: Bill Turner <dezrat1242@ispwest.com>; Date: Mon, 16 Jan 2006 07:15:00 -0800; ORIGINAL MESSAGE: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I do that every time I turn on the rig. :-) 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@c; /archives//html/Amps/2006-01/msg00407.html (7,806 bytes)
8. Re: [Amps] Burn-in for Eimac? (score: 1): Author: R.Measures <r@somis.org>; Date: Mon, 16 Jan 2006 07:36:16 -0800; I am definitely not in favor of drastic measures. cheers, Peter. Richard L. Measures, AG6K, 805.386.3734. www.somis.org _______________________________________________ Amps mailing list Amps@contesti; /archives//html/Amps/2006-01/msg00408.html (7,702 bytes)
9. Re: [Amps] Burn-in for Eimac? (score: 1): Author: Pete Smith <n4zr@contesting.com>; Date: Mon, 16 Jan 2006 11:16:28 -0500; Waste not, want not. 73, Pete N4ZR _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2006-01/msg00409.html (8,097 bytes)
10. Re: [Amps] Burn-in for Eimac? (score: 1): Author: "Gary Smith" <wa6fgi@sbcglobal.net>; Date: Mon, 16 Jan 2006 09:05:42 -0800; Give the virgin some counseling. Might this be considered a "life saving measure"? Hee hee & 73, Gary...wa6fgi I am definitely not in favor of drastic measures. cheers, Peter. Richard L. Measures, AG; /archives//html/Amps/2006-01/msg00410.html (8,398 bytes)
11. Re: [Amps] Burn-in for Eimac? (score: 1): Author: Colin Lamb <k7fm@teleport.com>; Date: Mon, 16 Jan 2006 09:06:27 -0800 (GMT-08:00); As a young teenager, I was willing to sacrifice myself so that some young lady ham's amp would work. Eventually, I learned that such an approach sometimes leads to harmonics unless a suppressor is us; /archives//html/Amps/2006-01/msg00411.html (8,383 bytes)
12. Re: [Amps] Burn-in for Eimac? (score: 1): Author: Tony King - W4ZT <amps080605@w4zt.com>; Date: Mon, 16 Jan 2006 15:45:40 -0500; <snip> I don't know "drastic" but you gotta watch "Rich" Measures ;) <grin> 73, Tony W4ZT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting; /archives//html/Amps/2006-01/msg00412.html (8,342 bytes)
13. Re: [Amps] Burn-in for Eimac? (score: 1): Author: gdaught6@stanford.edu; Date: Mon, 16 Jan 2006 15:55:49 -0800; Hi all, A few days ago, someone asked "where is the getter on a thoriated tungsten filament tube?" [as opposed to an oxide cathode tube...] I just spent the morning with an expert in rebuilding of th; /archives//html/Amps/2006-01/msg00414.html (8,630 bytes)
14. Re: [Amps] Burn-in for Eimac? (score: 1): Author: Bill Turner <dezrat1242@ispwest.com>; Date: Mon, 16 Jan 2006 16:10:34 -0800; ORIGINAL MESSAGE: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Did he mean to do the 100 hours with or without plate voltage and drive applied? Bill, W6WRT ______________________________________; /archives//html/Amps/2006-01/msg00415.html (8,379 bytes)
15. Re: [Amps] Burn-in for Eimac? (score: 1): Author: "Robert Chudek" <k0rc@citlink.net>; Date: Mon, 16 Jan 2006 23:03:57 -0600; So this old wives' tale is still kickin' around 40+ years after I heard it the first time?... producing "harmonics"?... only if you're an amoeba... In reality, this activity would create heterodynes.; /archives//html/Amps/2006-01/msg00416.html (8,669 bytes)
16. Re: [Amps] Burn-in for Eimac? (score: 1): Author: R.Measures <r@somis.org>; Date: Tue, 17 Jan 2006 00:35:24 -0800; George -- What gettering material is use to mop up nitrogen? Richard L. Measures, AG6K, 805.386.3734. www.somis.org _______________________________________________ Amps mailing list Amps@contesting.c; /archives//html/Amps/2006-01/msg00419.html (9,497 bytes)
17. Re: [Amps] Burn-in for Eimac? (score: 1): Author: GM3SEK <gm3sek@ifwtech.co.uk>; Date: Tue, 17 Jan 2006 09:07:50 +0000; The same material. The difference is that oxygen tends to form a stronger chemical bond than nitrogen or the inert gases do. 73 from Ian GM3SEK _______________________________________________ Amps ma; /archives//html/Amps/2006-01/msg00420.html (8,304 bytes)
18. Re: [Amps] Burn-in for Eimac? (score: 1): Author: R.Measures <r@somis.org>; Date: Tue, 17 Jan 2006 02:52:44 -0800; Thanks, Ian. What is the name of the compound that contains Zr and N? Richard L. Measures, AG6K, 805.386.3734. www.somis.org _______________________________________________ Amps mailing list Amps@con; /archives//html/Amps/2006-01/msg00421.html (8,511 bytes)
19. Re: [Amps] Burn-in for Eimac? (score: 1): Author: Karl-Arne Markström <sm0aom@telia.com>; Date: Tue, 17 Jan 2006 12:25:32 +0100; If I understand the physics correctly, the zirconium getter simply dissolves and binds the gas molecules in its own molecule structure. An interesting treatment of getters in general can be found in; /archives//html/Amps/2006-01/msg00422.html (10,473 bytes)
20. Re: [Amps] Burn-in for Eimac? (score: 1): Author: R.Measures <r@somis.org>; Date: Tue, 17 Jan 2006 06:53:58 -0800; Interesting indeed. Thanks, Karl Arne. So Nitrogen doesn't form a compound with Zr, the Zr acts as a N2-sponge? Haveyou ever seen a Zr gettering wire wrapped around a a thoriated-tungsten filament? H; /archives//html/Amps/2006-01/msg00423.html (11,213 bytes)

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