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Old 12th February 2009, 07:57 PM   #1
aduri is offline aduri  Italy
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Default Tube 6550 to test

I'd like to test this tube with my two tubetester I177 and BM215A Tesla but I can't find the card or the values to be set.

Can you help me please?

Bye
Antonio
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Old 12th February 2009, 08:22 PM   #2
Cobra2 is offline Cobra2  Norway
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http://www.audiokarma.org/forums/showthread.php?t=19753

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Old 12th February 2009, 09:19 PM   #3
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If your tube tester has KT88 on the chart, test a known good 6550 on the KT88 settings, and use that value as your reference value for good/bad tubes. The 6550 is very similar to a KT88.
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