Peter
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Kurt
→Comparison of 121 and 112
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cat
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year per 1950 catalog
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New page: The Tektronix 121 is a wideband preamplifier intended for 511 scopes. * [http://bama.edebris.com/download/tek/121/tek%20121.pdf Tektronix 121 Manual (PDF)] <gallery> Image:Tek 121.jp...
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