These notes are part of the first attempt to design transistor based read amplifiers for the drum extension. The notes were written by Jurij Semkiw.

The last few pages of the notebook are a log of events relating to the mercury delay line memory, hence the misleading title on the front cover - 'Log of Mercury Delay Lines Nos 1-24'.

Physical Description

Gridded paper with handwritten text and diagrams in blue. Three loose pieces of paper with text and diagrams inserted at page 7.

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