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[Amps] GI-7B's life

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Subject: [Amps] GI-7B's life
From: "Hsu" <>
Reply-to: Hsu <>
Date: Sat, 7 Jul 2007 19:46:41 +0800
List-post: <>
I have some Chinese GI-7Bs(Cninese renamed FM-7F,I have call the factory, they 
told me its quality is same as Russian's), I want to do a HENRY TEMPO 2001 tube 
convesation,origional tubes is a pair 8874.
  Although I have bought a pair 8874, but I think it is too expensive to 
me($500/pair).I'm thinking to replace 
a pair 8874 to  a pair GI-7B , I have never do it.But I think it should not be 
a problem  to me,I only want to know
its life in 700-800W HF/VHF/UHF out put level.Could someone can tell me its 
life? So I can cauculate how much  GI7B I should be reserve.
  Thanks in advance!
           73! Hsu
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