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Total 6 documents matching your query.

1. [Amps] Alpha 87A - Gettering NOS 3CX800A7's (score: 1): Author: "Jerry" <jsternmd@att.net>; Date: Fri, 29 Mar 2013 11:43:17 -0400; I am sending this on behalf of John who has not been able to get permission to post yet. Please reply either to the List or to him directly at jstarr001@hotmail.com. I have an Alpha 87a and would lik; /archives//html/Amps/2013-03/msg00359.html (6,892 bytes)
2. Re: [Amps] Alpha 87A - Gettering NOS 3CX800A7's (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Fri, 29 Mar 2013 15:54:49 -0400; There is no screen in a triode and running them with just the bias and HV is fine but if you want to be uber safe do not connect the anodes. Carl KM1H -- Original Message -- From: "Jerry" <jsternmd@a; /archives//html/Amps/2013-03/msg00360.html (8,377 bytes)
3. [Amps] Alpha 87A - Gettering NOS 3CX800A7's (score: 1): Author: john starr001 <jstarr001@hotmail.com>; Date: Fri, 29 Mar 2013 11:12:51 -0400; I have an Alpha 87a and would like to replace with 20 year old NOS 3CX800A7 pair. These have never been used. I would like to getter the tubes by running them for 1-2 days but I have no setup other t; /archives//html/Amps/2013-03/msg00362.html (7,089 bytes)
4. Re: [Amps] Alpha 87A - Gettering NOS 3CX800A7's (score: 1): Author: Rick Stealey <rstealey@hotmail.com>; Date: Sat, 30 Mar 2013 14:33:01 +0000; If they need gettering, putting full HV on them will cause them to arc, by definition. Maybe you could put a large value resistor in the HV lead temporarily and see if they can take it. Rick K2XT ___; /archives//html/Amps/2013-03/msg00365.html (7,328 bytes)
5. Re: [Amps] Alpha 87A - Gettering NOS 3CX800A7's (score: 1): Author: "Fern" <crc@cyberlink.bc.ca>; Date: Sat, 30 Mar 2013 09:36:09 -0600; Just don't connect the plate caps while doing this gettering. Fern _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/a; /archives//html/Amps/2013-03/msg00368.html (7,856 bytes)
6. Re: [Amps] Alpha 87A - Gettering NOS 3CX800A7's (score: 1): Author: TexasRF@aol.com; Date: Sat, 30 Mar 2013 12:20:25 -0400 (EDT); Hi All, I have found that using an old analog HV type VOM, such as Tripplet 630, as a current limiting resistor works very well. These meters typically have a series resistance of about 100 megohms a; /archives//html/Amps/2013-03/msg00369.html (8,654 bytes)

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