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1. [Amps] Can someone ID this tube and its use ? (score: 1): Author: "John Lyles" <jtml@losalamos.com>; Date: Wed, 1 Apr 2009 19:05:35 -0700; Jim Tonne, are you sure about Tom Yingst? He was at RCA/Lancaster for years during the development of many tubes, but I thought his tenure at Eimac was shorter and that the Y designations preceeded; /archives//html/Amps/2009-04/msg00024.html (7,860 bytes)
2. Re: [Amps] Can someone ID this tube and its use ? (score: 1): Author: "k7rdx" <k7rdx@charter.net>; Date: Wed, 1 Apr 2009 19:36:24 -0700; Several years ago I bought a few surplus Y-448 tubes made by National. They were close to my standard 4-1000A`s in performance at HF,however,the filaments drew around 30 amps (per tube) as compared t; /archives//html/Amps/2009-04/msg00025.html (8,656 bytes)
3. Re: [Amps] Can someone ID this tube and its use ? (score: 1): Author: "Jim Tonne" <Tonne@Comcast.net>; Date: Thu, 2 Apr 2009 09:44:10 -0400; John Lyles wrote in part: That's what I was told while I was at Continental. The year was probaby 1986 or 1987. He was (is) apparently a true tube guru. - JimT _______________________________________; /archives//html/Amps/2009-04/msg00027.html (6,995 bytes)
4. Re: [Amps] Can someone ID this tube and its use ? (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Thu, 2 Apr 2009 11:11:34 -0400; I thought Y tubes go back to the 50's. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2009-04/msg00030.html (8,405 bytes)
5. Re: [Amps] Can someone ID this tube and its use ? (score: 1): Author: "John Lyles" <jtml@losalamos.com>; Date: Thu, 2 Apr 2009 10:23:38 -0700; My memory agrees with Carl's memory, although I was not around in the early 50s to know first hand. But I have seen Y-tubes that are quite old in various systems. Also, they still sell Y tubes. Jim,; /archives//html/Amps/2009-04/msg00032.html (9,769 bytes)
6. Re: [Amps] Can someone ID this tube and its use ? (score: 1): Author: "Jim Tonne" <Tonne@Comcast.net>; Date: Thu, 2 Apr 2009 13:33:22 -0400; John: I think I was indeed misled. JPhred Riley indicated just a bit ago that Tom didn't have a hand in *all* of the Y tubes. And I agree: someone ask him at NAB how he fitted in with the Y tubes. -; /archives//html/Amps/2009-04/msg00033.html (7,674 bytes)
7. Re: [Amps] Can someone ID this tube and its use ? (score: 1): Author: "Pete Lancashire" <pete@petelancashire.com>; Date: Thu, 2 Apr 2009 12:09:51 -0700 (PDT); the two I have opened are that colour and it not uniform as if from bombardment. I'll take a wiff this weekend. When I opened the first one the 'horse-hair' packing on the top was falling apart and; /archives//html/Amps/2009-04/msg00036.html (8,600 bytes)

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