Hickok 6000 Settings for Testing 6550's

Here's an old thread that mentions your 6000 and 6550/KT88's...

https://antiqueradios.com/forums/viewtopic.php?f=8&t=275639

I was looking for my TV7-D/U @ the time, when I ran across it.

DeKay

op should hopefully understand that a tube tester can test a power tube for basic function but no tube tester ramps up the tube with bias currents that resemble in use conditions of real hifi tube amplifiers

not even close

so many tube testers will show power tubes like 6550 6L6 6CA7 as ok but then you put it in a tube amp play music and sh&t happens