View Single Post
  #2  
Old 11-11-2007, 02:43 PM
Chad Hauris's Avatar
Chad Hauris Chad Hauris is offline
VideoKarma Member
 
Join Date: May 2003
Location: West Texas
Posts: 2,085
Sylvania also seemed to use the two-letter date code system for a while too.
I have often wondered about the letter code too ...this may have been kept a factory "secret" and maybe even the distributors did not have the code info.
However I have seen some GE tubes (usually original equipment tubes in GE TV's) which do have the standard year month code (like 74-19, etc.)
Also it seems like tubes that were made for other makers by GE often have a real date code, too.
We have a Leslie speaker which have some "RCA" 6550's which are made by GE with an 82 date code...also a "Fender" 12AX7 made by GE with a 78-26 date code.
__________________
Chad Hauris
http://www.youtube.com/user/retrochad
Reply With Quote