517

The Tektronix 517 is a 50MHz scope introduced in 1950 or 1951. The power supply is an external box, like the 507, 551 and 555. The 517 does not take plug-ins. There is also a 517A. The 517 closely resembles a scope that Tektronix developed under a contract for the US military during 1949 and 1950:

• Final Report on Tektronix MILSPEC High Speed Scope

• Manual for 517 and 517A (PDF)

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  front

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  bottom internal

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  right internal

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  top internal

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  power supply internal