From jjense–(at)–irius.com Wed Apr 30 19:26:42 CDT 1997
Article: 29751 of rec.audio.tubes
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From: “John W. Jensen”
Newsgroups: rec.audio.tubes
Subject: The TRUTH about GEC (M-O Valve)
Date: 30 Apr 1997 23:24:28 GMT
Organization: Thorn Microwave Devices Limited
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Recently, I clipped some material from this newsgroup and e-mailed it to
one of my work cohorts. He used to work at M-O Valve in Hammersmith (not
on the regular tubes of our interest but on microwave tubes). He recently
sent the following to me:

John,

MOV were making Gold Lion tubes when I worked there, they were bog standard
KT88’s pumped on 2nd world war rotary machine pumps imported from the
States. Pumps were two stage box pumps and town gas bake plus much ECH
outgassing. The Gold Lion was just a marketing stunt to dramatically
increase the selling price, and it worked brilliantly. The Genelex logo was
used for overseas sales particularly to the States to avoid infringement of
the US General Electric name and logo. However, the ‘bog standard’ KT88’s
were pretty good anyway, and although the grids should not glow during
normal operation, they sure did during the standard processing and ageing,
to outgas and burn the crap off them.

Howard

 

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