WW2 I-177 Vacuum Tube Tester Demonstration

This video shows a demonstration of an I-177 Tube Tester being used to test vacuum tube diodes (two different types), full wave rectifier, and an amplifier.
Testing vacuum tubes is an essential skill for antique/vintage radio restoration. The I-177 tube tester provides a versatile testing platform for confirming valves are good as the radio trouble shooter debugs issues with an antique radio.
Refer to TM 11-2627 for Tube Test Data settings for specific tubes

[@narutonish]

Cool. I just finished restoring one of this.

[@terrybush2605]

Thank you so much for going into detail on this tester! A great teaching video. God Bless you. Terry

[@tangoalpha8381]

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