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#5
10-08-2015, 08:58 PM
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Just make sure it's a 6BK4C/6EL4A - the only certified non-xray generating version of the 6BK4. All others (base, A and B suffix) were part of the Xray scare in the late 60s. The 6BK4C was created to fix that problem, and interestingly enough, was invented by a woman....
http://www.freepatentsonline.com/3590308.pdf http://www.videokarma.org/showpost.p...7&postcount=16 Cheers,
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Brian USN RET 22YRS (Avionics/Cal) CET-Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit! Last edited by Findm-Keepm; 10-08-2015 at 09:03 PM. 
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