I 

,\ 

••• #1- ••• " .... 

CSlA-S //SJ.112 

. QhW Sipal (.;tfioer 

Jie~t r4. tile A1'117 

' 

... ., ~ 1P....J 

l. Batuence 1• Fade to· letw.r from n.e AOJuta\ Gn.•rel., eubJeot1 •Air 'i1"*'21-

porteld.fJ.t7, •tile AuAU•S 4S2.l (15 Sept 4?) C:lil»/~I, d.aW 24 September 1947. 

2. 'fbe A.nq S.eurit.Jr Apnq, ooaenting on thi• letter to the Linctor ct Rem 

--u,d linelotaent, GSUS"A, ita"ior \0 it• publ:l.eatlon, Meoa.Mncie4 that. a para1raJlli 

· bit lllolutR to the •tf"' aat euiteltl• uan• of inte~c\ioll at OGllJJOD•Dtl of 

couwaiaa\ion aDd or.Jptogl'llJilllc ~pment. be 11149 aanda'°17 111 ozder to inaun •• 

ot ia•tellaUoD end di•couenio.D of tll•• eqtd.pmat• c•pab.la D~ being ~ftDS:pt.Nd Ir 

au. 

). 'fh9 L1notor ot_iil ... r.h ad JAwloPftD\, GSUSl, •Uil••t•c:l that. tM J'llcoaaelld.at.icm referred to ia pancnpa 2 i.. aumit\d -.o th• J1pal corpa and the Air 

J'oree 107 eonaiOent:Lon ot i»alwling •aG a nqld.NMDt, ill Tt!olm1cel Coad~-.. OOLal• 

d•Z"a\iaD ~ •lec\rioal equi.pet. ,. 

4.- ta. ~tion r4 Yu1o11i 1tema, Rah as cannon .Pl'l.lia, H. c.r • .:one11 pJ.uCa_. 

or D.ftq•cleYftloped 1tea1Ul of aoimeet!ua that •ill perr.1t ea1e of kuta.llatic.11 OJ' C.iocoaneot.1011 of iM CGllpcnel't. part1 ot a coaaw>icat.1un 01· aryp .. c&t:fl.phic equipui:it !natal• 

lat.ic;n, will prow of nl• Sia tbe .UptalliliQ- ot 9flLpr..e11t tor .U trGsporlalflliv. 

'Ille t•ell1Q' dtll which t.b.e iutellaU. _, w Cli.s111n:t.led, •biPP41fi, ud rein~t.alle4 

rill upen• upon the.•ana aploted Sn •k'na U,. ccmnsctJ.ona i..twec tb8 Yar109 

ooaponenta. The de~ o£ thi• ~aoillt.1 will detemine to • lar1• ext.ant the auitald..liQ' or the equ1:9f'e:Dt rcr air treeport. 

5,. It. 1• 1"•~ tbai ••aaa ~ ia"91'8D11Met.icm c4 ~cat.ion and cqpt.opaphie eq1l1s-u.t11 that .u+ p~ tor .... aud rapid1t1 ot coJ111ectiwai anu diaoonneeUoa l» «1•••1opei! an naclar41-4. and t.b._t. t.b• Utt or th•• nan• ot illteraoD .. 

lleotiOD. a -- ~t01'11 wh•n••r po••1~e, in f.ba ciBaJ.p ot t.boae 8(iuip&ent.a io.teadli ~or air trc1pon. 

6. 'l.our eOU"•nt e.D4/or coacurnnoe ~ the abQn zeo~em.dati<-11 ia .requ.atad. 

- ICIR 'IBE £'l.B£C'lt,R OP IITIU.IGDi"s 

·QC1 21 \9'f· 

- SIGNED r ., .. , . .,,. 'lUi 

iiA.1LJ.D O. IUllB 

Colc11el, .SJ.p•l Corp• 

Chief, A1S1 ~1'7 Ace.zt.q 

,\ . 

I \ . - I I, 

, I 

I ~ 
• DR.-ft • 

SU&1£CT1 StalldU'dlzaUon ot Keans ot Interconnection or Component, Part. 

ot Commun1.gat1on. and CljptQgraphic Equipmeota 

T:l 1 Cb1e1' Slioal oti'1cer 

The Pentapa , WasiliI!gtQn 25, D. c. 

4T'filNTION1 Chief, Engin~cring and ;_.chn1oal Division 

...... ~ I 

·l. This Agencr augr;est~ to tbe Reaesrch and DaYelopment. Dinaion, 

General SW.i", hn:lted States Anly, that suitable m•ns ot ir..terconneot.lon 

ot components ot communicatiOft and C17Ptograph1c equipments, 1n order to 

inaure ease ot iostellation snd discontinuance ot these equtpaente having 

' 

the characterist.1ca of Air Traneport!lbili.tJ', be made manda"to17. Thia 

•uggestion wsa intended tor inclusion 1& the Adjutant. General letter concerning air tra11aportsbll1t7._ It was the belief' of the ttesearoh ena 

Development ;)1vuion that the Mjutcnt General let.t•, lat• is.Jued as 

letter, 24 September 1947, file .l1JiAJ-S 452.l (15 Sap 4'1) l3GllD/D-ll, 'IQS 

not tb• appropriate iutruaent for this item and it•• the recomended 

that thi• suggastl.on be sutaltted to the Signal Corp• ad the Air Force 

tor their cona1det"at1on. 

2. It 1s bellned that atandal'C11zation ot var1ou.1 it•s1 auch aa 

CBJlllOD plugs, n. ii. Jonea pluza, or :ncwly-developed maarJe o~ cormeotion 

that will per.nit eaae ot installation or discontinuance ~ the component 

' 

parts of a commonication or cr.yptograpbic aq,uipment installation, will 

prove o£ value 1n the adaptab111t7 or equlpmant tor air tra:nsportebi.lit~. 

The tac111t.:r with which the installation any be uismntled_. shipped, and 

' 

' retutalleci will depend upon the means emplo7ed ~ making the comiectiona 

c50HFIDEHTIAQ - ' ' 
....... . 

• ~· ID:A.7112, - .. .... .. . ·- ....... 

tetwHll the varioua co1C.Ponents. tne dtfgree ot th1a tacUi t7 will determine to a lerge extent tho suitableness or the ~uipment for air tr&nar.ort.. 

, I 

It is believed t.llat the design of eqdpmenta in component parts oE such 

aise and weight as to p81"1tit air transportation 1a not. a sui'.i'ic1ent eUi.temat ot cheracterlstics to inaure the moat aucceastul applica iion ot t.he 

equ11J1qents in their intended use. 

'J. :it i• therd'ora recommended that r.ieans ot 1nt•conneot1Qn of 

coaurdcat!on and aryptograpb1c equipment.a t.bat will provide tor eaae lU'Jd 

rapidltJ ot aormaction end d:lecormect1o.n be devalop-1 and standal'Ciized, 

I and that the uae ot these 11.eana 0£ interconnection oe made mt.ndo.tory, 

wherever po$sible, ir. the d•iCC ot tiU>se' equipments intended tor air 

tranaport. 

4• lour comment and/or conc:ur:-ence are requeata4 • . , ( 

l ' 

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2 
I 

,J 

i I 

} 

• REF.ID:A71120 

• !,,) .... :.2... ' 

'1 \~ 26 Sept;amber l.947 

SIGCtl~ wu dneloped at the tL-ia ASA. •a• a pa.rt or the S1gna1. 

Corpe. !be, 131 aubaet was dneloped. 'b7 the q41 Telephone Laboratories 

and •• unuract.ured bJ' '"eat.em F.lect!'ic. This e'!Uipr:ent pr!Jri.arU.7 

coneiated ot a mixer, which waa uaed for the aprese purpaee of nd.xing 

the clear text 81pal with gmerated keJ' aigml.e. '!'ha l!dxer and the 

SIGCU'' comprised the crntographic el.er.:ant•, hc:sever, as was reasonable 

the 131, had anoU!er t1Dlction, that of trananitt.1ng and receiving t.he . 

telet1P8 ai."'8].. Thia was accomplished by 1!188111 ot a two-wq repeater, 

' 

so here in one unit •a incorporated two &e!lBJ'ate rvnctione; a cr:1ptopa!)h1c function ancl a cCll'llimnicatione tunotion. All at our thinking tram 

that dq to this bas been predicated upon the pldl.0901'h7 eY.l.denced in the 

design ot the 13l equipr19nt. 

low that we are divorced fran the Signal Corpe it ia tine that we got out 

at the ccnmniaationa buaineaa. 't'!e are responlible tor oonmnicaticma aecur1t7, 

not; cOl!lClUl'licationa. If • 1'81!181n 1r. the buainaea ot COJT.Dmicat1ons we are 

going to .find soma day that we are in ael"lou trouble. 'f'ibile we 111&1 

reaaonab~ predict the course of corr.l'Dlllications 1n the future there i a no 

certa1nt7 that the mane preeentq in uoe tt:tr transmlsaior. ot the electrical 

signal.a will not. be eu,araed8d b.y ane or Mftral radical clepal't;uree trom 

cu.l'NQt17 standard practice • . u holraver, we devote our onersiee to the dewlop-.ant ot cryptographic . dmcee and it proper coordination bet.ween thia Agency and organisations . ' 

nt•poneible tor the,dnelopnent ot ccnmnscationa a¢plll8nt w will be in 

-1-
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--... 

- - --------~----~-----,...----

.REF ID:A71120 • 

a poeition to aore aat.1afactor113 cliachup our reapona1bil1ti••· ' 

fb1s policy in regal'de t.o equip!ll8ftt performing onl7 in om flanetion, 

that is, the cr.?JJt,ographic function, ia not new. In the oaae ot radio 

t.rancd.saion • do not transmit cw electr1cal mgnals. r.e mreJ, retor 

the aignal to the radio tranmd.tter and it la only in the cue t4 wt.re 

tranm:lssion that 1i8 act u a cammudcations agent. 

This pol.107 "111 be aooapl;ed very gladl.7 b.v the 11gnal Corps. The7 

are n•ponsible tor ccr.mnicatione ant tbeJ would like 'ft17 much to ells-

- cl9"ge that.reeponsibllity without the aaa:l.stance ot thia Ageno7. It is 

believed. ~t the cool'dination re~uired tor dnelop!lellt ot CGlll!l1Udcatiou 

equipnent and crntog:raphic equipment will be poaaible" •lthw t u.y 

ditticult7. An evidence of this is indicated bJ the action takm by the 

Signal Corps nt. om- request. for- modif'iaation of their facsimile equipment. 

tor tbe prorieion or prapeto connectiona for cr,pt,ographic devices. 

The adOpt.lon ot this pollq should .aaa1at 1n a decrease in wight and 

eise ot oar equipment. This la an 8ZtJ'91D817 :Import.ant factor toc1&7 since 

ar-t emphasis ilt placed on \hese tm po1nts bJ' all ueing een1c••• 

un.tlAtl BRIJI!, Chief 

'l'EtDIC&L ftAFF 

SBCORl'rY DMSIOJ: 
/ ;REF ID:A71120 

·----· '', " .. .,..! .. 11,, ..-

• AS·80 

'' • I\ 

3. AS-80 AB-24 4 Oct 47 

·' I 

-

, ' 

• 

, 1. Attention 1s invited t.o the attached letter · from The Ad3utant Gmeral, subject as aboYe, dated 24 

September 1947, tile AGA0-8-452.l (15 Sept 47) 

CSGRD/D-11, forwarded tor ,your illtol'll8tion and guldanc'!t• _ 

r 

2. Raf'erance is 1118de to Coment Jllo. 31 Carrier Sheet from AS-SO, 25 Jul.J ' 

47, aub3eat as above, and to Comment lio. 2, Carrier Sheet from AS-80, 16 JUl.7 194? • . .3. It 1a desired that a proposed drat't of a letter to tJie Signal 4!Jo1"5,NI be 

'~. 1 

'- " : '\ .. _,.I 
/ 

\ 

. . 

AS-80 AS-24 

~F IP:A71120 ~/ 

6 Oct 47 ~ • Air Transportabilit,y (;;.,ntinued) 

submitted to AS-24 in accordance with suggestion of ResearcJl and Devel()pment 

Division, General Statf, USA contained in paragraph 2, attached Disposition Form. 

4. Copy ot eubjeot AG Letter has been sent to AS-70 end AS-90. 

2 Incle 

J.. D/I .from B&D Div. 

2. Ltr from AGD subj. 

Air Transportabil1t7 

/a/ CHH 

CHABL::i!3 B. BISER 

Lt. Colonel, Signal Corps 

Acting Deputy Chief 

Ar'IlfT Securi t7 Agency 

Ext 462 

' A-1-21+ AS-80 17 Jct 47 !t ls St.gt;t:..t ;.,4 tb& t the inclosed clrdt :n: a l.~ter 

'I;.• i'orwatde ~ ~~ the .hi.et 1ttnal Jt.;."ic-T. 

/ 

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~ l 2 

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