WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
Building, troubleshooting and testing of these amplifiers should only be
performed by someone who is thoroughly familiar with
the safety precautions around high voltages.

How To Test Western Electric 407a Tubes With Hickock 6000

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I am looking for the setup numbers to test these tubes on my Hickock 6000 tester.

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