491: Difference between revisions

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60 bytes added ,  19 August 2014
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The Tektronix 491 is a spectrum analyzer [[introduced in 1966|introduced in August 1966]].
[[Image:Tek 491.jpg|thumb|300px|right|Tektronix 491]]
The '''Tektronix 491''' is a spectrum analyzer [[introduced in 1966|introduced in August 1966]].


Due to severe performance limitations, it was replaced by the completely redesigned [[492]].
Due to severe performance limitations, it was replaced by the completely redesigned [[492]].

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