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Old 16th December 2011, 08:55 PM   #1
nickds1 is online now nickds1  England
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Default Hickok 539 question...

Hi - I have a 539C - when I measure the gm of some tubes, the meter needle flickers a bit rather than being steady - anything specific I should be looking for here - its a very clean (and aligned) unit otherwise... The tubes seem fine...

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