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1. [Amps] Y-621B tube questions... (score: 1): Author: "David McGinnis" <dmcginni@co.missoula.mt.us>; Date: Fri, 07 Nov 2003 13:27:22 -0700; I recently aquired an amplifier that uses two Y-621B triodes. Its a old Harris, military HF amp. Problem is one of the tubes is missing. Other is unknown condition. Seccond problem is I cannot find a; /archives//html/Amps/2003-11/msg00089.html (7,810 bytes)
2. Re: [Amps] Y-621B tube questions... (score: 1): Author: Alek Petkovic <vk6apk@eon.net.au>; Date: Sun, 09 Nov 2003 16:53:18 +0800; G'day David, It sounds like one of those little planar triodes. Have a look at the Eimac Quick Reference Catalog. The 8940, 8941 and 8942 may be similar. I have a couple of Y-670A tubes which are not; /archives//html/Amps/2003-11/msg00113.html (9,828 bytes)

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