Hey guys,
My '70 1959 has a quad of late 60's Mullard Blackburn O getter tubes and one tube is reading weaker than the others. I have access to a OO getter mid 60's Mullard Blackurn to replace (pending matching plate current, etc). Is it acceptable to mix (single) O and (double) OO getter tubes together in this circuit? Thanks if anyone can help clean up the confusion.
El34 O getter and OO getter mixing
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StratLou
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