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please help 407a
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Old 5th October 2008, 12:07 AM   #1
tomthum is offline tomthum  United States
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Join Date: Jan 2008
Default please help 407a

howdy,
I am new here, but hope someone can help me.
I have a 539c hickok tester, and can't find the data to test a 407a.
People have told me a few things and somone told me to test it as a 7370.
Although it seemed correct...I think the voltage was wrong.

Thanks for the help.

THe unltimate Toob Boob
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Old 5th October 2008, 01:51 AM   #2
mach1 is offline mach1  Australia
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Location: Brisvegas
Same as for the 396a or 2C51, but up the filament voltage setting to around 20v.
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