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C/S. C.S. :
CSKO :
(pron. "sisko"). (in Enigma short for "Consecutive stecker knock-
Out"). A method of running a bombe so as to eliminate stops which
involve consecutive stecker (sc. the steckering of a letter to the letter
next to it), used in breaking certain G.A.F. keys which avoid consecutive
stecker.
CUT :
Position of points of division when, e.g. a subtractor or a cipher or
code message is divided into equal groups. On the cut: (of a reciphered
message) using the same subtractor as one or more other messages and
having the group-divisions falling at the same points. Off the cut:
using the same subtractor but having the group-divisions falling at
different points.
CUT-OUT :
CUT-UP :
A re-arrangement of the entries on a blist under frequencies or
associated frequencies and in German-time-of-origin order, effected by
cutting the original blist into strips and sorting these in the above
manner.
CYCLE :
1. The number (in practice, a number between 1 and 150) indicating the
line of the key-table used by a particular station for determining
the page of the Bird Book on which its call-sign is to be found on
each of the days of a particular month (the particular call-sign on
that page being determined by the Row allotted to the station).
2. Any series which recurs or is expected to recur in the same order,
either immediately after it ends or at some later time.
CYCLIC :
That behaves as if it formed a circle or circular series; continuing
or repeating so that the first term of a series follows the last;
characterised by regular repetition of a particular pattern; periodic.
CYCLICALLY :
In a cyclic or periodic manner.
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