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fll\111 AS•70 L_) I ) 

'8~20 Al•&l 1J .Ju 47 Cl7Pt011'8phiO Packagine 

1. Durilll the period of the laat. war, •nval aoaen\8 were received troll 

the t-1.U ooacerlllllg thor 1ar1• uoun.t. ol floor apac:a rectuirlld tor a SlGCUM or 

SllTOf JMta.llaUoD. An otf•lille Type •4• room circuit would require al»out. )5 

&fiUU• te•t ot tloor epace end a TJpe •;&• would reQuir• aboutt 50 equre lee\. 

Thi• lu1• epace requlreaent wu a11 important •• well •• a diaadvan'\ageou 

factor 1a tile eqU;aat. lqout. ol oode rooa. 

2. One or tho 1uggute4 met.bod• ot alln1a ting tJa1a condi ti.>n wae the 

packq1Dc ot a cr1pto1ftptl1a 1netallat.lon 1n muah the •aa• Ul'll\W aa a teletr,Je• 

writer ••t. U/TGC-1. ~ia wo'1ld not oal.J perait cooed'ftt:1011 ol 1paoe but would 

al10 pera1t. iaproyed opcraUoul facility aa ••ll aa better availawilii, ot ~alp.zit tor u1n1.6118nae. ProYiaiora could be &Ilda tor Ul~ up .. dit.ioua r-9'place-

•ent or u7 component ot tbu t7pe ot installation. A package unit, ot t.hla t,'pe 

would be particul.arl7 adaptable for fixed plant 11lst.allat1oaa inclwU.:.c liar 

Oepartas:t, Tbeat.era, Aral Gr,'Q.Pll, Ara1:1, :.aJ=ir 11.r Forcu am:l A1na7• and Air 

,;oguniaatlons Sence Statiou. lt 1a q111t.e .reuonable t.o suppoae tbat. Ail' 

foroe W1J1Ca end Groupe could 111 DQ' lnat.aacea use Wa tn• ot iutellat.lon to 

great. adYantage. It 1a also proper t.o cona1der t.be uae ot tb1s tnJe ot J.natal• 

lation O, t.ect.ioel 1Ud.ta. .\ 11 a certa11l\y uaat tibia mlit. woUd have been 

installed in the Cl'ypt.ocraphio Van in place ot the subeteadlll'd ir..Jta~lation that 

••• n•cessar~l7 illstallecl- there had eueh • unit bom available. Since tAe AnJt 

QJ'0\1l1d 10l'cte.t ba'f9 a•OUl'ad a111tboriant.ion tor the dnelopmmt am pro~eaent ot 

anen mobile aipal center unit.a, it is appueDt that. the trad ia tonrda mobilit.J ol signal 1utallat1ons and, tberetore, tutun trailer or van i.natailla\1on 

ot oode cent•• •7 oe upecattd. Thia tne or unit. would be parl.1aularlr adapt• 

able t:> auab ue and Huld P"•atl7 taacUiute the oomera.1.on ot an. 1Dstallat1on 

ti-oa aoblle to tixed • ta\ioa or vice ., ..... 

). lt appears Ulat 8DJ or1ptogrephic 4R1en tor the enolphel'Mrlt. ot 

t.eletype eipals t.o l>e dnel.ope4 in the near tut.are lq t.bie Aa•CJ •ill reseabla 

the SIGTOT or SIGWll \o the •teat. that aa1oolatecl t.eletne equip11at wUl be 

reqwdred ill order t.o el.laplet• eitber en otl•lln• or an on.•ll.De in•tallailon, 

ud aooord1Dcl1 no improYueni in apaae conaenatJ.on will be ettect,ed b7 oon\aaplaW developaenta. ' 

4. I' S. reeomendl4 tlult 1 proJeot be 1n1Uat.e4 tor t.he deyelopment ol • 

P•okaa• al\ :lJi aocordaa.:e wiib the iaoluld W.11'817 CbaraotuS..Un. 

5. Jt la 't.elinecl uaat \la• Sipal Corpe alaoalcl lie l"MpGUiklie tor '11la 

ll~elopmea\ bi \bat QOlllJ.W or concmTeao• troa Pl.aat Dtglaeailc Ac••OT 1 

ColllnatoaUoaa ~iH!l'lDJ Dl'aaeh, lngia••lDC alld Tea>mloal Senioe ot tile ~tllce or ttle'Chlit ~J&ll&l~"Ott.t.cer, •• nll u the &lr COmau!oaUou OttS.oe ot 

\tie Arwt ~ lorou a.S Ar'fll Gioad Foraea, 1lanl.4 be a..-..S ltetore tlil8 pnltl.ea 

le aabd\t.t4 t.o the leaeercb an4 Dnelo"8\ 11TitS..a of the lar DtPar\ll•t 0.. 

enl St.tt • :, ~ ,- ' 

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\: : . . .. . ----, .. : RESTRICJEO . ri. ~ :/, ~ - ... --Declassified and approved for release by NSA on 06-03-2014 pursuantto E.O. 1352 .. ....._ , 
REF 

f ---·- ~•f~fPPEB ' n ... u 1 ' uv 1 

1. AS-ao AS-11 1J J• 4'1 .:r,ptoll'•lhlo Paokagtna (contd) 

6. I\ •7 be BHOUJ'71 1ll oa•e th1a proJeot 11 approyed, to couidn- that 

fwt'1r!_ ea-ntoP"•p.bio eqaipaonta ot th• '1P• herein re.t.ned ta •1 •~• to be 

oon11der84 tor rack •• •ell •• ata.alt r.zowaUq. 

7. C...uta are nqauw. 

•D.Ll•• 8iUd Chi•t", Tedmioal St.aft 

S•C111"1t.r Dl'fll1oa ~tenaioD J68 

R~STRICTfO . - ... 

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a 
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IILITW CHABACTi&ISTlCS 

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PtJIPCIE ~ I I 

1. The need. exist• tor a package unit to be uaed tor consolidating a 

t.elatne G17Ptograph1c 1.utallation conaiating ot a cr;yptc>P"aphio unit and 

t.be aaaoctatecl telet1P• equipment. 

OFJfJAW, CJW\AC'f !!NSTIC!I 

2. Thia unit 11ulll be ao constructed thats 

a. It will contain the component.a neca••U7 tor a basic C17Pto• 

graphic imtallat1on. 

b. It will be auitaDle for fixed atation and/o'r tactical use. 

JP'8}At1,1AL cBABACisaISIIcs 

3. Thia unit •hall be ao conatructad thats 

•· It wW prorlde on•lins or ott•line operation. 

b. It will provide tor sit-clown operation. 

c. It will pend t connection bet.ween component& b7 means .:1t 

plugable cords. 

d. It •ill pl'OVide protection for ,power auppl7. 

•· All power and operat.ag controls will be eaail7 aecesaibl.a 

to tzle operator. 

t. Expecl1t1oua replac:eaent of u.r component. is possible. 

I• All component.a are readUT ayailabl.e tor •1nteDance. 

h. It will proride meaaurea to prnent iAterceptable BDd interpretable r!diaUou bJ me11DS ot ehieldecl cables, pol\ar filters am grounding taoll1 ti••. ' 

1. It will provide tor shock mounting ot all eoaponenta. 

PHYSICAL puwC'UBISTICS 

4. rue unit. •ill bes 

•· !a lisht in ••11ht and small 1n s1se •• conaistent, nth other 

requi:r•ente. 

' ' b. Capable ol operation and storage wder all cliutic cond1tiou. 

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~- RE~ffitcrfn> 
I 

3. AS-80 AS-24 S Aug 47 Cr,yptograpbic Packaging (Continued) 

Major lhitahead Ext 489 

For consideration or nonconourrence o£ AS-70 arid return 

to thia ott1ca. 

1 Incl 

n/c 

/a/ Paul E. Nett 

PAUL E. la'F 

Lt. CA>lonel~ Signal Corps 

Acting Depuv Chiat, ASA 

4. AS-24 M-80 12 1111 47 1. lt. 1a ballned t.bat. the n.rat conaiclaat.ioa 

her~ ia tile opln1oa ot t.he ming senlcea, tlaat. 1a tlle 

An.r Qroaad .i'oraee, t.b• ANT .t.1r Forcu and tile Sipl 

Corp8• •• to the desiJ'abilitJ of e dnelopma.t. pnJeet 

tor a cleric• ol this kiml. It ia, tll .. etore, believed tbat. reaomendat.1oaa ill 

"'1• •tt• abovld be 1ecur..t boll these eel'Yiou at the earl1ut poe.sible lllOJUllt. 

2. It it 18 talt. tllat. a 4et1D1te nftd e:dsb tor aueh a device, tbea ms\ 

oert.dnJ.7 dnelopment. 11lould proeeed conouttmt.q with t.ba m-~19, 1Aa•av.ob as it 

1a poaa18le tbat th• 411te1181ons ot tile ~-Sl9 mq haTe to N iao41t1ad 1a ordc to 

fit. aacb a dnloe. 

J. Wltb retarence to parqnpb 2 ot Coman~ lo. 21 it. 1a to te note t.llat 

~. development of this .dniee is mt in eoawad.iot.ion to ... .ha poliq ot tbe War 

Departaeat 1a u.y mamor. 1h1a deftlopaent 1a enUrel.7 ~ end stUl it alloald ~. oapaW.e of beiJI« utiliaed wi\b the SIGTOT, SIGCD, lili•519 or 8DJ otll81' future 

4ne1optd ~plalo dnice t.o 'be ued IA usooiatioa 111.tb telet.Jp.ftl'lt.e 

~t. 

4. 'ftd.a twice S. 1Dtead.t to ~· ~· h'ue work tor • IMelo ...,.,W- crapblo lnatallaUoa aad 'l'MthG' t.Jla C1'7PWP'apb10 deri.c• 1• ui iater1a or en 

111.U-\e la ot little !ltportace except tbat Mr o.rnrtocraphio dft'eloJIUll' 8ho1114 

"N ao 4ealpad. a• to flt •1tJW:t. 'th1a 111!1t, prni4ed thi• denlopaen\ pro~eot 1&I 

wuaw. 

'· lltb retertmee to para&ftPh 4 ot ea.at lo. 2, 1\ la-' beUne4 a4• 

vlaala\• to rwl'lt.• till• &W.1tll'J' Glanrie'18'1• 1D 01"4er to ate llOl'e epeolfte •lti -•daW t.ele1.Jpftft..., eq1dpna't lbn14 • i!lel.Sl4 in the lul• 

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- antolftpld.e 1M'81la'1oll. -na..e OODPOMDU w1l1 4epeai .-IJ,pll. Colpe 4ew-1-

opaat ~ teletJpillll"iter eqdp&•t. ad UoDld inolvde thole 1t.ema DRUIUll'J to ,..,,.,. tJae ..U-Jmom ..,.,..._.pblo ep ... U.O.l tuaou.w. 

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