The US 6812 Division Bombe Report Eastcote 1944 Page 50

Tony Sale's Codes and Ciphers

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-42-
TOP SECRET-T



RECEIPT OF MENU

Menus are received in Out Station USA over a direct teleprinter line

from the machine room, Bletchley Park. They are received in the follow-
ing form:

USA 0 DDD

14/4/5 381M 1 PHILADELPHIA SPARROW 1 l/11 WOS 60 I + RR SSO +

+ D 126 THEN B +

J F
ALXR
MGIT
ESQD
CNK

ALAC LXZC XRZE MGZD GIAA ITAB QDZF CNAG NKZA LIAD MEAF IQAE IDZI ECZH
(JAZB FRZG ESZJ PHANTOMS)
l6-l7 2/11 SMV+

1617/2/HMF+

The following is an explanation of the symbols:

USA 0 denotes the outstation.
DDD is the marking for an urgent menu which i6 to be given

necessary priorities. Any delay whatever on such a job will
be called in to controller BP immediately. URGENT will be
written on all such menus before they are given to operators.

14/4/5 indicates a menu with 14 links, 4 letters wide and 5 letters

down.

381M denotes a job serial number.
1 indicates that this is the 1st menu on this job.
PHILADELPHIA designates The bombe selected by the machine room at BP

to take the menu. The same menu is plugged on other bombes
afterward by mutual agreement between B? and ourselves.

SPARROW 1 denotes the key or traffic involved. This particular key

Sparrow is the traffic of Y Service, Central Mediterranean.

1/11 indicates the date on which the message involved was

intercepted.

WOS 60 designates how many and what type of wheel orders shall be

used. In this instance all wheel orders are to be run.

I designates the input to be at I.
+ denotes a full stop in the teleprinter.
RR specifies that a re-run shall be made if any short whatsoever

between two letters on the bombe is found at the end of the
job. NOT RR indicates that if you find a short between two
letters only it is not necessary to re-run the job, but that
it shall be re-run if you find two or more shorts.

SSO (Story Stop Only) indicates that BP wants only good stops

without any legal contradictions.

D 126 THEN B Indicates that this menu is to be run with the D Uncle

Walter patched as shown in the D 126 patching plan.
Afterwards it will be run with the regular B Uncle Walter.

J F
ALXR
MGIT
ESQD
CNK Gives the letter framework of the menu.


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