491: Difference between revisions
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Tek 491 front trace.jpg | Tek 491 front trace.jpg | ||
Tek 491 rear.jpg | Tek 491 rear.jpg | ||
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Revision as of 14:42, 10 June 2017
The Tektronix 491 is a spectrum analyzer introduced in August 1966.
Due to severe performance limitations, it was replaced by the completely redesigned 492 in 1980.
