VISIT TO THE INFRARED SURVEILLANCE BRANCH OF USA SEL, FORT MONMOUTH, NEW JERSEY

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03300A001600010003-9
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 5
• Document Creation Date: December 27, 2016
• Document Release Date: July 16, 2012
• Sequence Number: 3
• Publication Date: August 26, 1957
• Content Type: MEMO

. .. ....._.....--- - . _ I ~ _ . ~ _. .~~ 1 l
Declassified in Part -Sanitized Copy Approved for Release 2012/10/10 :CIA-RDP78-03300A001600010003-9
26 August 1957`
Mid~IGDt~1 FaR s ~ ~C~
E9UBJ~C'P Visit to thv ~n~rared ~eil3aJnce Branch ai'
t~1,1~L, Fart Maamputh, Bey Jersey
1. T~ /U~D P OF s The meaeting was held at the
U. 8. lh~gy 8 Stsgirye ratoriess 8a~ae~gan Buildiag, Fort
Ma~noaoutby lfe~r JeY'se~ts ~.~ August 1.957`. The Surveiliaace Branch: Sveas
Signal. Laborats~x"Y, is the only branch in the Hexag+tta, BuiSding; the
rest at Sraas is in Fort nth. The ;~urve#ll~ance Br~lacdt, under
Barry Daubers seeas lArg+ely concexned w9.th devices.epplicaftble to
$nte~lligence~ aperatioa~uN.
2. AT'I'8liL~/IBCB: ~1i1,3.ielm R. Drav~neek ~quip?aent Dev~rlopment
$eCtiOllf ~Li2'Vei1la14Ce
Branch IAA 88x.
Dame]. KeL1,y
Chiefs 8quig. De~I.
Sect., Surve3.l~-nce
Wrench f i~A 88~
~. Dl$tI48;
a. "C" Ualts
.~...~..
(3.~ id~r. brav'naek toad us that he and Lt. Ceaeer of a2s Ft.
Hoa,~-bird, had coaaducted tests on our "C" units in com,~saeisonl with their
Alt/Pi1+G-~ waits. The maxim rexl< oY the tx~ans>~,tter and. r1$ceiver optics.
Ths "C" units do not et this ti.>a~e have provision for making collin~tian
sdaustments. The optical hoidiag black is nacb3ned. froos solid alw~num~
the optics are call3mated and fastened to the holding bl~k. It i$
~ beli~red that some of thle accuracy of coL`i.ini>gsticm is, therefare~ lost
i because of rhino tolerances ~.n the unit.
DOCUMENT NO.
NO CHANGE IN C ASS. ^ r,
Th? "C? unit treusmitter
CLASS. CHANGED TO: TS S~d; ~
~_~
~~
NEXTREVIEW DATE: !~/~
AUTH
HR 7
~
:
0-2
~ DATE: ~ REVIEWER: 010956
Declassified in Part -Sanitized Copy Approved for Release 2012/10/10 :CIA-RDP78-03300A001600010003-9
 Declassified in Part -Sanitized Copy Approved for Release 2012/10/10 :CIA-RDP78-03300A001600010003-9
_. __
The "C" unit trsas~4tter was yeti with rhea AN/'FAC-2 reae33ver.
Usiztg this ceaabinatfoa~ ~ tangs oP l.5 moss wau attainesd. Ths~ incrs~ases
in range e;an bs attributed to the ~ inch collecting sirror eared in they
rere;eiRer oP the A~ f P.A~C ~~ ar ccsd to the "C" unnit xscmSvsr rr~hieh 'mss
mo collecting mtx~ror snit whate 1,enr aperture is ozily ana inch.
(aj se?~urity
The "C" units uas a ~ahott L1~8 glass intra~rsd filE.tear
while the AIrfPAC-2 use geierann E(~~ p2,adtic coated g~-ss. tTaing the
U38 Filter material, the tranrLittsd. beam of the "C" unit could,ber
observed with the na2t~sd sys at apprax3,mato3,y '75 yard~r awaye, when
standing directly is the bemut. ~iith the lisimann 805 Pilteer g]ass, the
tr~atseattted bases ai" the AItfPAC?2 could not be seen with the nakad eye.
SRL is tre~d.ing ar-rimue range far aarnaasa vietus~, (or mstascops) security
in the iixis mt s4~t. ~ thes othear hand, the "C" unite l;~ tseels, rrhould
ba~cepa`'b"~e o~~grsater rangers u3th the wider F9~.ter broad a~n~! grve-ter
modulation sPPiciency?
(3a 0pesrating Temperature
The Alt f ~+'AC ~?2 has an operst Ong sage ~oar- Oo to 1CX7o F. ~,
while the "C" unit oparating temperature r`~gs is apDroximata~y 320 l~.
to igC1o F. Mr. Drav~aersk said that he bets performed cansid~erable work
on Pb~ ce1.11- atad hie has Pouted that they w~, not operate at temperature~r
ebtrirs L'l0o F. We were also told that the g igr~, Corp~r hart their P'bt3
cells cemented to gla tha couv~entional e~henol bare; this
i1t sxaet~r parallel t f`9,ndi3ags.
(4j 8stterie~s
The "C" unit can uti~.isrs either Mallory RM ~ mercury
cells? loin AA rechargeable ce11s or co~amereia3. pen light ce]le. Whi~.es
tearing the "C" unite, SgL;' pereomael used mercury ceslls esnd caacpl~,iawined
that there rose no merest ins in the "C" units to provide Par
checTting the battery condition. ginc8 the Mal].or~r ~4 12 mercwty cells
have a eftraight lens rather than a 13neax die-charge rater they Pouttt't
that the units mould be vork3ng at maximtm ranged and without warning
would bs cwaplsta],y iaaperative. An added obasctiona-1 Feature s~ith
regard to the lsattsrisr was the Pact that the battsriear cannot bs
rsa~orvsd l~um the "C" unit without ctm~lstely di~trupting then alignt.
(~~ ~s
The Al'/1sAC-~ ueae ~- st:-nda~ PR..g lamps SaWerver, the P~t?9
has to bar used with a metal collar at~ded to itee regult~ bases. Then mate.
coL'tsr is hslO. in a spectaliy m~ lamp al.ignmsnt Fisrtwrs. The P1~9
lgmp is than iassrte:ci, facuwsd ated. glued 3n t2mrsctor.
(6} AmpliFier
Tt was thought by 88I. pere~onnsl ih tu-ing the equipm~t
that the esmplilier o! A~1/p'AC?2 he+d a better Prequan-cY reepoaaso than
the "C" wait espeeis~.:ty at the low and. They were them told that i'C
would be bard to sake Held QcAep~~r~ro~-+~ om the ampiiliers ~ainee, ~.n meat
ce~eeeti off' close te-1k#ng, they waW.d be overdriving the lust stage o!
the "C" unit thereby 3utroduc~g considezab~.e distortion ~.n the awd9.o
s igria]..
The ANf~"AC-~ is, cone~tructed with glugtia printed circuit
boards !Qr both the receiver and emitter secticear. This ~ very
corrve~aient !or aervicit~ purposes but a cwasidersb~y to the Overall
siyue o! the unit.
(7) ~~
The AN/~'AC-2 uses a 4~pawer telescope hav~.ng a 2 cm lens
with a 1 mRn eyepiece. The "C" unit uses an men bare sight. The tele-
scope let very cornrenient i'er ali~nmemt but here ega4,n it ed~ds considerably
to the ee~,ght acad. alas o! a unit. Th+a tslercope itsel! is approx3,a~ately
L/3 the s~.se oY the antirs "C" unit..
Lt. Gea~ser o! G2, . Hdiab3rd, i~ prapsr a memo om thm
tests perlor~rsd with the lI1~IfPAC~2 in competx~isvn with the "C" unit. A
copy o! that memo. will prob~ab~y be seen thxou~h Mr. gtulman's otlice~
The p~tht~stern Ufniversity zAeport on the 8-unite w~ very
disappo3uting. It coatained not~t3ng on the galva~eameters berau~te 1~.U.
had been unable to get a set tox' teats. The ~.T- origins3 inlox'matipn,
on optical, im~BinB~ is autmaded by the new high city mirrors !or the
~~units. The two mE~de1 $ stern ware
returned to Washington With and. will be
returned to t?/C.
b. ~ Personnel letector
In view of the recent Anqu9.ry of APD i'or such ee devices.
~peciel note is melds the ~. prototype models o! the R5T9 (>~-3)/~'~
im!'rared persoimel detector. This is a portable (less than 14 1bs.)
receiver to detect the motion o~ persc~mei. Yt is equipped with a 7"
diameter m~,rrpr: polyethylene i'uter, and balazcced tbsxetistors to give
s field o! about 3 x 3 mf,1s {,roughly 1t? ffiautes v! c are on a aide) .
It is a completeJ~,y paasiv? unit. Ons detector sees the backgr~d~, the
Declassified in Part -Sanitized Copy Approved for Release 2012/10/10 :CIA-RDP78-03300A001600010003-9
 Declassified in Part -Sanitized Copy Approved for Release 2012/10/10 :CIA-RDP78-03300A001600010003-9
i -
~, ~
~ I
other the s~diatian t!:"o~# a Berson. The sperm. of the device is limitad
by the tim cdnstent of the da1-,ectar (?.~ to 3 ml~4seca~s rctiugh~,y')
by tha lixterrven3~ng ataMaspharics, and by the ba+:~cgrwrr~ ~Mdie-ti~ at
ee~gst the soma temparatuxe as the forgot. ~paad is ~ Function of the
scanuiug principle 3malvad~ which 3S suffieienti?y ita8etnie~usi wi93
also tee out much of the background atFacts; tha twq~thermistor
approach 3s tba One favored by Daubetr's gi*oup i"or soma ye+ux~ ? The
t
i~ltervesnuirl~r atmospha~ic si~tuatior~- ie- iladaa~termirzetes i,t1 the presen
stata oS the art; very raputab3.e persouet ho3~. s~ vieew~a end the
~~r ~'1e1t1 wf3!'$ h~ Ilat beecl dCxle~? ~]@ davicers haYB ,dust beam
~. CAA $EL I~~TEI T~ ~h?+ATIt3~ 'i'C? APD GP ACT~93TI~ ~
w' y,e,w s~N ~yavIIeC1~8'~,,yi~rite~~+r~eet/~la 3n QPply+i~~~~.~the,~wN
gB1V`anOID~tar On ~'a~++~.i.4~ t0 tiii~ 172i IW~'~f ~ ~2.QOYf:+Try ~V~7~
n?t cpnt'lict witb~ a~or pvar],ap, Our work at Such an e-~aptatit~n
wOUZd ba barad 011 our latest ~'~.Xids aY3d impav~vemen S W1der ~~;,r+`t
Task y. Ura'rtm~k Wi3.l not nac~ve unti,3, he bars $i~eeted tha C?unit i"3na~:
report (which ~t dalivere~d. to him on i5 ,August) and wou~,d pike one ar
two C?uII1ts t`0l" ~aara e!X$aul3tl`-'e tallt~ Otl $Fi"icienciet8s bei`ore deterlfl~Jli2~$
the advisability of eu'~-pt~ the PAC-2. Ito camom9.tment was made an C~unit
ava3],abil3.ty;~ but the results 4$ a~3tiar~J. te~rt,~ shoult3 bte of cQn~
siderable va~tu+a tq us. Hes is thizilcing in terms czf $75,t~Q for the adaptati~c-
co2abraat.
b. Pasrsaun+t3. L;et~sctor: ,APB?/t~P pert ma~e1 w313. cantinas to
aolleRCt exist~.ng"~"~a~"~"ra , p~~Y: ~~ and baFor?
sse-ki~ag ax3y ;~caasee~-tioas. Sl~pin6 up a geaatreY33'f:~ ~'t: ~e ZQZ' tW'C Qx' thrC~ 'ii~:m~ t4tgt9.Llg. SUbt~equeat r6l~WOrl'~ byl-
' '~- regt~3s'atlx x~llult~r epttl.d t~i~lCt~,y atsP~Ct ~$0 "es~aential"
hSV'rs ~ lsx~ge ~331d o~ c'~ette~i `rer~ ~ tcyuched.
C~!$!C~! 31,tAd+p~ x.11 11!!X'C ( ~Utl~t ~1"QCL3t`E!2lM~2T~ ?
C. 't~' Ct7l3tt8CY. 'WftI1 ~+. t4y9.C~y 031 T~11Ch '~
~! 1 ~' ~, Y' 3.b1 l~ 1 O 312.
gr3g. M ~tl--101B
? {C~~~~
1 'r ~Ti7
2 ? ~'lI'OIIt?
Declassified in Part -Sanitized Copy Approved for Release 2012/10/10 :CIA-RDP78-03300A001600010003-9