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The 556 was the last 500-series scope produced. It was present in the [[Media:1974_Tektronix_Catalog.pdf|1974 catalog]], but gone in the [[Media:1975_Tektronix_Catalog.pdf|1975 catalog]]. | The 556 was the last 500-series scope produced. It was present in the [[Media:1974_Tektronix_Catalog.pdf|1974 catalog]], but gone in the [[Media:1975_Tektronix_Catalog.pdf|1975 catalog]]. | ||
(The dual-beam [[7844]] had been introduced in 1974.) | (The dual-beam [[7844]] had been introduced in 1974.) | ||
The designers of the 556 were [[Phil Crosby]], [[Larry Biggs]], [[Ron Olson]], and [[Arend Kastelein]]. | |||
{{BeginSpecs}} | {{BeginSpecs}} |