The Newmanry History

37 Page 292

before motors were broken were de-chied, but those set strongly on some chis
only, were held for 'delayed motor runs'.

methods gave no result, if and when there was machine time to spare.

discovered by spanning on Colossus.

In all cases it was best for the D.O. to write out quite precisely what he

Further runs fell naturally into two categories: Runs strongly expected to

When Hut 3 believed that messages were of special urgency, the C.O. was sent

Before the first de-chi on a new key day was ordered by the T.R., a chi test

Psi test tapes were made (with suitable limitation) as soon as psis and

A routine test (using a general test tape) was carried out on two Colossi

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