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The '''Tektronix 511A''' is an improvement to the original [[511|Type 511]] that was [[introduced in 1948]] after about 350 units of the original 511 had been produced. | |||
The '''Tektronix 511A''' is an improvement to the original [[511|Type 511]] that was [[introduced in 1948]] after about 350 units of the 511 had been produced. | |||
See [[511|the article on the 511]] for further details. | See [[511|the article on the 511]] for further details. |