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Old 27th Aug 2012, 10:22 pm   #14
MrElectronicman
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Join Date: Feb 2011
Location: Washington DC, USA
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Default Re: EM84 tube - pinout and spec?

The difference between an EM84 and an 87 is the sensitivity, an EM84 needs -22 volts to close, and the EM87 needs about -10 volts, if I remember correctly.
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