[Amps] Testing amp with no air flow

[Rick Stealey]

I will soom be ready to apply power for the first time to a homebrew 8877 
amp.  I need to make adjustments under the chassis with the tube filament 
lit and was wondering how long I can run the 8877 with just filament voltage 
applied and no air flow?   I don't see the subject addressed in the Eimac 
spec sheet.

Rick  K2XT

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