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   rec.audio.tubes      Tube-based amplifiers... that go to 11      52,877 messages   

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   Message 52,487 of 52,877   
   c.g.industries@gmail.com to All   
   Re: Tube Tester Calibration Needed   
   13 May 16 13:41:39   
   
   We rebuild and calibrate the Triplett 3444, and offer a modification by adding   
   a digital plate current meter so you can read up to 199.9 ma at the same time   
   as you test for gm, no switching required.  It will also measure the actual   
   current for diodes    
   and rectifiers which the 3444 can not do now.   
      
   We modify the 3444 to be able to use 121vac to 124vac, from the original   
   117vac.   
      
   It takes a full week to do this work, every part is measured, three days just   
   to calibrate the line, 72 hours to burn-in the new parts.  Triple calibrated.   
   We can think of no tester or analyzer which requires a long burn-in and   
   absolute fine tuning like    
   the 3444.  They leave here with less than 1% error from specification.    
   Calibration is good for a minimum of 5,000 hours of actual in-service use,   
   that is more than ten years for most.   
      
   We have the original factory floor master 18 page calibration with notes, and   
   the calibration docs. on the web are not accurate.   
      
   Chris was a good friend.   
      
   regards   
   Bud Allen   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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