500-series plug-ins (Letter-series and 1-series): Difference between revisions

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===Tektronix made plug-ins===
===Tektronix made plug-ins===
<gallery widths="150" heights="180">
<gallery widths="150" heights="180">
File:53A 1.JPG            | '''[[A]]''' - 20 MHz, single channel, 1954
File:53A 1.JPG            | '''[[A]]''' - 20 MHz, single channel, 1959 (53A: 1954)
File:B 2.JPG              | '''[[B]]''' - Same as A, with an extra 10× of gain, 1954
File:B 2.JPG              | '''[[B]]''' - Same as A, with an extra 10× of gain, 1954
File:C early 1.JPG        | '''[[C]]''' - 8.5 MHz, dual channel
File:C early 1.JPG        | '''[[C]]''' - 8.5 MHz, dual channel