The Colossus Rebuild Project by Tony Sale

Colossus Reborn

The Pattern on the Patch Panel

This shows the patch panel for setting the pattern of pulses coming from the Thyratron ring.

Starting at the top left hand corner and reading down, you can just make out, "x.x..xx" etc as the pattern.

These patch boards, at the back of Colossus, were very inconvenient for the Colossus operators to use. A later addition was the sloping panel in front of the K rack on which patterns could be plugged up and changed more quickly and easily.

This page was originally created by the late Tony Sale, the original curator of the Bletchley Park Museum, and Secretary of the Bletchley Park Heritage Society.