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Old 03-12-2016, 09:49 PM
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MIPS MIPS is offline
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Join Date: Jun 2014
Location: West Canadia
Posts: 1,021
The luminous surface itself obviously doesn't get tested but the setup for the EM87 is listed on page 136.

Code:
A - 2, 6, 8
B - 6
C - G
D - 1
Socket - 3
I really don't trust the emissions or grid leak tests on this tube because its so simple but if the heater comes on it's a pretty good sign the tube is fine.
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