REF ID:A71028 

'!BR1h CB1et, ABlf Camnm1e&t1ou Service 

&zpur.tmental. Aaaembl7 ~ Stpba Yi~ Page .?rmta. 

a.PSIS•) l T Jov. ll-:5 

COde 8129 

i. At 7our e&'l'Deat. aol1c:ttat1cm aa. aperiatmtal camb1J:l&t1m ~ a 8.tgab& with tbe BlectramaUo tJPOVJ'iter ~ tb8 SIGJl!'C 

( eonvertu 04....,) baa been aaaabled and tated.. !he set-up vill be •illtained tor a tev da1'8 ill cue 7ou Yiah to examne 

it. 

2. The oonelus:.t.ona :reached. aa a i-aaul t ~ our •tuclT o~ 

tbia ~1meatal eGmb.1mt1on are as tollova: 

a. A4van:tagea. --!bare seem to be cm.17 one advantage 

amt ib&t o-r doub~ importance, m.ae17, the comb1D&t1cm vill 

proV1de a page print. Thia t•tUJ'O vould. save time and labor 

neGUll&Z'J' to paste doe the vi-eaeat allp iape 0•1ng be tlMt 

Sipba. llowevv, the ad'V&Dtage vou.14 ?)a .\mpO.l't&D~ cml.7 1n the 

case or outgo:Uag •augaa since 1D the oaae ot incoldng wages the copies would lave ~o be emnded betore the neceaa&ZT mmber o~ cop.1•s can be lQIOduoed tor d1at71but1oD. 

' 

b. D18&Ctfantagea.--(l) the cCllbi.Dai.1• 1a COD11ida&bl7 

aoJt• eompla tbaD the Stgab& alone 1 -.a.~eaanae 

dU't1oultiea voulc1 ~ aODS.tde.N.1117 iDezteaaed 

and apeo1&1 tN4.•tnc JRMlld have to tae added 

tu tm S1.pb& .,.,._., • .- wbo at_,.._t 

lmov little about tbe-md.llt-..- ot·ta.eotl'o-

•t1o tJ'PftJ'iteJ'll. ,., · - --

(2) It ia belieYed t!la~ there would be a Det 

.reduot1on in speed. d opuat10A because 1t is 

MO••&UJ t.o paue at the end. ~ & UM 'f• 

eur1&ge Htlml. U tbia p&.118e 18',fiiMle the 

·" ...,::- ':!-.at omMota V1l1 be PJ'1D'84 •• u..e f1711 

-:: ~ '1'dd,p:otroa1d:•-; .. ~k-torlil'Pe&Jt 

acmnben D-.J' t.1m Jd.cld1e ot the ae:n 11ae. 

fM .. •.,...'9.;llDllJ.d.. ~ ... ts.Jtet l&Te to 

•'1DP -.~-...1a....-1'6t.Ua _.._....l.ati.fm' v01114 

be loa• U4 one nald be Oft1'Pl'1BW. 

- '-----···---· 

@'pproved for Release by NSA on 07-02-2014 pursuantto E.O. 1352a 
REF ID:A71028 

(3) It voald be ditticnal;t tG unage 'Era 

'CIUldGa .,.... i.toD. 

J. "!our eomll9Ats - 1mpeeUon or the ~tal 

~aaaablJ ~~• Jes~l.9ild. 
1 Colonel 

Oordesw.n 

REF ID:A71028 

1. .lt the aol1o1at10D. of Colcmel 

PMAOh, the Sleowo.tio !Jpe~1te put ot the IHll!O (Conve•ter 1''-AJ VU OOD• 

neo'94 to a llpb& an.4 the U•.U17 waa 

em1ne4 bJ aever&l of u th!• MniDg 

in P BMaoh. !'he tollowiDg MPNl•Ate 

th9 OODClUlOU reaohe4 bJ' Coloul 

Allaopp, .. 3or Jloa•n• kjozt Salm Ul4 

1119elt. 

!. .U.ft.Jlt&P••~fttft •-to be on17 oa.e a4w.ntage, and. that ot doubttul 

u.ponaaoe ... 1,.. the ocmb1D&t1on Vil1 

proYide a pap print. OolOMl l'Maoh 

hiUeU' admit• tb&t page priat 1• uetul. 

oal7 ill '11.• ••• ot outgoJ.q ••up• vheff a a1.Dg1• oop7 1• au ib&t 1a retld.M4• In th• oaae ot iaoomsna ...... , manr oop1•• are nqu1l'ed aD4 t?aeae obv1oua17 oaanot be Pl'oduoed. b7 th• •obsne. 

Ia PM0'1o&lly au inatuaoea, hrthel'-

•or•• ti. aiqle oon produoe4 bJ" tbe 

.-oh1M aat be -D4e4 &114 tne4 onr 

&pin. It 1a pante4 tb&t 1n the ••• 

or outgoing •••s••• a pap pi-1.llt v111 

aave the t1M am labor aeo••llUT to 

paste down the present •11P• oomng hem 

:=,•=:aU:'r!~.:!1:t: !7.:U 

traoUoa or the ts. ~e4 to prooeaa 

a.ra. cnataoinl •••P• 

Jl.• D11&4V&Atagea. -(1) !be ocabiMUoa requires a441t10D&1 eqUS.p- _, (Sleovcstio ~iter eqUS.ppe4 

vi th aolao141), ~· 001t ot vbioh 

1• &PPNX!•tel7 f550. 

(2) !'he oomb1nat1on neoeaa1tatea oena1a ll041r1oatiou in the 81g&b&, vhioh would the -.U th• latte noaataDdN-4. 

(') !he o0Jlb1D&t1on 1• oona1del'• 

abl.r llOl'9 CGQlU tban the 81g&b& 
REF ID:A71028 

SIGABA-SIGMYC Combination (cont'd) 

&lone and would, theretore, be mwe 

eubjeot to breakdown.a and to m01te 

h'equent operational stoppages than are 

now encountered 1n the 81gaba alone. 

(4) Maintenance d.1tt1oult1ea 

would be oonaiderabl7 1noreaaad because ot 

the oh&ngea 1n the S1gaba and because 

ot the neoeaaitJ tor maintenance on th• 

Blectroaatic 'l'JP•V1'1ter. Moreover, 

S1g&b& ~1ntenance aen are now not 

tl'&ined 1n maintenance ot Eleotromat1c 

TJPevr1tera &nd would have to be t&\111ht. 

(5) Increased d1tt1cult1ea V1th 

respect to training oi>erato!'a ainoe 

the method or operating the combination 

1a quite ditterent f°l'om that ot opera.- ting the S1gaba 1taeU'. 

(6) There vould be a net reduction 

in speed ot operation because 1n the 

t1r•t plaoe it vould be neoeaaarr to 

pause at the end or a line so as to 

f

1Te the carriage time to return to the 

ett. If' a pauae 1• not made at the 

end ot the line, va1t1ng tor carriage 

return, the next cba:raatei- 1• apt to 

be printed "on the tl7" when the 

ce.rriage 1a returning, vhioh would 

cauae the printing to take place aoaevhera near the middle ot the next line. 

The operator vould,, there.tore, either 

have to atop and •ke a correet1on or 

a letter vould be loat and one would 

be oYerpr1nted. l'uJathermore, the 

neoeaaar7 time-1nterY&l between groupa 

ot 5 letter• (tor spacing) 1n the case 

or the outgoing meaaas••• or between 

vorda, 1n the case ot incomtng measagea, vould requ1re some slight aloving up 

ot operating speed, because this tiae1nterva1 1e a little b1t longer than 

tb&t required tor the Sigaba printer. 
.. .. 

l Col. (oont•d) Corderman 

tt REF ID:A71028 

SXGAliA-Sl(IJaO Combination (oont 14) 

(T) It 1fou1d be d1tnouit to 

&1'"'811• tor tandem opeMt1on, thue 

losing this important a.dvantage, 

(8) Electr'*'8.t1c !JPe'Vl'1tera 

are ver7 aoaroe and a higher i>r10l'it7 

tor the1l' ueage 1• neee•e&J7 ttnt 

certain Arlington Ba.11 opere.tion& I'•· 

quiring th91. 

2, It would appear that th• &.•-

ad.,.ntases pNt1.7 ove:r-bal&ac• the •1ll&l• ad.vantage ll0te4 above. 

'· rue repwt 1e subm.•te4 Y1th 

a rtev •o enabling 70u to reaob a dec1a1oa 

&e to vhethe~ or no' J'OU ¥1ah to ehov 

tb• coab1•t1on to Colonel Prench or to 41eo~ea th9 ... tter v1th him. 

v.p. Pri.-.a 

J>a. o.. •••. sraxa-' 

Bx. 215 

12 BOT. 19'J'