| Descriptors |
Electron tubes, Leakage currents, Electrical insulation, Communication equipment, Specification (approval), Statistical quality control, Assessed quality, Quality assurance systems, Inspection, Endurance testing, Circuits, Electron tube components, Safety measures, Approval testing, Current measurement, Radio transmitters, Power measurement (electric), Short-circuit current tests, Amplification, Occupational safety, Environmental testing, Testing conditions, Electrical testing, Test equipment, Qualification approval, Quality control, Pulse circuits, Electrical measurement, Electronic equipment and components, Sampling methods, Marking
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