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<gallery> | <gallery> | ||
Tek 516 hvps1.jpg|Three 5642s in a [[516]] HV supply | Tek 516 hvps1.jpg|Three 5642s in a [[516]] HV supply | ||
Tek 547 HVSection-NoCover.jpg | 5642s in a [[547]] HV Supply | |||
Apollo 5642 tube.jpg | Apollo 5642 tube.jpg | ||
Apollo 5642 1.jpg | Apollo 5642 1.jpg |
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