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|12th July 2009, 05:09 PM||#1|
Join Date: Jul 2009
Precise 111 tube tester - missing tubes
I have recently acquired a fully restored and calibrated Precise 111 tube tester.
Unfortunately the roll-chart of this model does not mention tubes like the KT88 and the 300B.
The 6550 valve is mentioned but probably not exactly a match to test the KT88 ?
I found some extra information on the internet about this model, but a document with supplementary tube data does not mention those tubes either.
It seems strange to me that both popular tubes should be impossible to test on this particular tester, so I am wondering whether anyone here would have the data necessary to test these tubes on the Precise 111.
Thanks in advance
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