1220-A1: Difference between revisions

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|image=GR 1220-A Front Close-up.jpg
|image=GR 1220-A Front Close-up.jpg
|caption=General Radio 1220-A1 Unit Klystron Oscillator
|caption=General Radio 1220-A1 Unit Klystron Oscillator
|series=
|series=1220
|introduced=1956
|introduced=1956
|discontinued=1965
|discontinued=1965
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