The Special Fish Report Albert W. Small (December 1944) Page 105

Tony Sale's Codes and Ciphers

| previous page | next page | index page |

CX/MSS
TOP SECRET Special Fish Report Page 105


Description of Machines Used in "Newmanry"



TUNNY: Newman's section has three tunny machines: the first two


use standard telephone relays (type P.0. 3,000) to generate the chi and psi and

motor patterns. The third and latest model uses telephone relays and will

perform the delta operation in addition.


Each Tunny is primarily used for deciphering messages; it is also


used for de-chi-ing; it can work backwards as well as forwards. Each Tunny

has available 2 reperforators, 1 teletypewriter printer, and 1 tape

reader ("transmitter.")


On model three, any tape can be sent through and a delta tape


generated; or wheel patterns my be delta-ed. The control panels and

pattern generators are on relay racks with total width of 8 feet, and

height of eight feet. The tape transmitter, reperforators, and typewriter are

on a desk nearby. Any impulse can be included or excluded.


JUNIOR: (Three available.) Consists of 1 reader, 1 electromatic


typewriter, 1 plugboard. Used to print de-chis.


GARBO: Used primarily to make rectangles. Model I can make delta-de-


chi tapes or prints, although models II and III do not have memory apparatus needed

for delta Garbo consists of 2 I.B.M. tape readers, 1 I.B.M. regenerating typewriter,

and 1 perforator; the assembly is on two tables and there is a small rack for

switches. In Garbo I the memory relays are arranged in 4 small banks on the

switch rack. Delta process can be done by using two tapes, one tape plus memory,

and in case of delta-de-chi, by one tape for Z text, memory, and one delta-X tape.

Results can be printed on typewriter or punched on tape. Garbo can transfer

impulses to different levels, etc. Any letter on the tape may be made to

operate any letter on the electromatic typewriter.




---




| previous page | next page | index page |