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|type=Type B | |type=Type B | ||
|summary=20 MHz amplifier plug-in | |summary=20 MHz amplifier plug-in | ||
|image=Tek | |image=Tek type 53 54b.jpeg | ||
|caption=Tektronix Type B | |caption=Tektronix Type B | ||
|introduced=1959 | |introduced=1959 |