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The 511 was Tek's first product, [[introduced in 1947]]. | The 511 was Tek's first product, [[introduced in 1947]]. | ||
A revised version, the 511A, was [[introduced in 1950]]. | A revised version, the 511A, was [[introduced in 1950]]. | ||
Charles Vollum was directly involved with the design of the 511. | |||
It uses a standard CRT, the [[5CP1A]]. | It uses a standard CRT, the [[5CP1A]]. | ||
The vertical output of the 511A is a pair of [[6AG7]] tubes, | The vertical output of the 511A is a pair of [[6AG7]] tubes, |