491: Difference between revisions
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Tek 491 center freq.jpg | Tek 491 center freq.jpg | ||
Tek 491 internal.jpg | Tek 491 internal.jpg | ||
Tek 491 283022 0.jpg | |||
Tek 491 283022 1.jpg | |||
Tek 491 283022 2.jpg | |||
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Tek 491 283022 4.jpg | |||
Tek 491 283022 5.jpg | |||
Tek 491 freq dial.jpg | |||
Tek 491 top int.jpg | |||
Tek 491 vertamp.jpg | |||
Tek 491 lo.jpg | |||
Tek 491 bot int.jpg | |||
</gallery> | </gallery> | ||
Revision as of 10:44, 29 November 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.
