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|type=Type A | |type=Type A | ||
|summary=20 MHz amplifier plug-in | |summary=20 MHz amplifier plug-in | ||
|image= | |image=Tek 53 54 a.jpeg | ||
|caption=Tektronix Type 53A | |caption=Tektronix Type 53A | ||
|series=500-series scopes | |series=500-series scopes |