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Seco 78
#1

Anyone have the procedures for calibrating a Seco 78 tube tester?
#2

Here is all that I could find:

http://bama.edebris.com/manuals/seco/78
#3

That's about all I could find too.
#4

Try contacting these links/people, they may have some info for you:

http://www.alltubetesters.com/

http://www.radiolaguy.com/info/tubeTesterRest.htm

http://www.atlantatubeamp.com/




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