POWER-LINE CARRIER-CURRENT SURVEILLANCE SYSTEMS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03300A002300060003-6
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: December 23, 2016
• Document Release Date: May 8, 2014
• Sequence Number: 3
• Publication Date: October 29, 1957
• Content Type: MEMO

Declassified in Part - Sanitized Copy Approved for Release 2014/05/08: CIA-RDP78-03300A002300060003-6
-# co) trr
?
?
tiMANDIP4
CONFIDENTIAL
? C/TaS/AS0
ACMS/PAD
ACtisSEVTA
ibver-lizo
29 Oett/bOr 1,957 ?
DOCUMENT NO. 7
NO CHANGE IN CLASS.. 0
El DECLASSIFIED
'CLASS. CHANGED TO: TS 'S
NEXT REVIEW DATE: ? ? A?I?
AUTH: HR 70-2 _ . ? ? ?
REVIEWER: 037r,
2 JAN 1980.*
ent lleno: systems
1. the Applied Phyaice Divinion bzn bton ?mttsizit in the devolop?
tent of pover-line 'carrier-current nurveillance 4102=8'1.a to* projeete.
, The first of these to based. 46 the wet= end mu COtOlitakibeti
?
to value* a lindted number of Systeme for eagineerieg end operatiotel
witluation. ?
Twenty of these wet= (ineduced by wee 50X1
delivered end locally subjected to pra1itlitiOr7 Life-teetire end
seginecring evaluation. Thew unite were returned to the contractor
?'ter cc:motto*, of deficliecies cod eighteen unite hoe been codified
end returned to ,APD.- These units have been operated for 100 hours
? either& failure or aegnedation peecuitargoo,
50X1
3.. The cocoa project (vitb has preduced a , -
system with a cumber of characteristias evertor to that ot the
unite. itong these characteristics aro: (a) greater
t better .sigtelo.to-noiso ratio, (a) better eedio
ty, (d matt scaller aim of tranovitter? and. (a) lower paver
consunption end beat dieeipstion.
A covaricon of the tax+ nysteme has lei to the4icim to
aside ,cany further interest in the mite ? 50X1
50X1
50X1
t of Ode al:avian there is no need to subject
unite to a form% toot and ova:Intim program
no veleehle :purpose.
6. t. Cieioneshould not be interpreted.
ea manias that the cwt are of no value to the
indict eurveillenee ery, these unite axe capab20
of field use providing the limitationa ere not exceeded. Those
limitations include) (a) do not operate the equipment in enclosed
spaces (without adequate ventilation) for extended, periods of tine,
(7) de not install trona:Attar *ere the micrwhone must? be so con-
cealed
on to not receive enough acoustical _input level, (a) do not
attemt to operate at distanceis in excess of 50-100 feet unless a
trrelladoary check for Intelligibility aa wine background to Irado?
ord (a) do net atteept a permanent operational 1tsUatIen_
SEL
RET CONFIDENTIAL
50X1
50X1
Declassified in Part - Sanitized Copy Approved for Release 2014/05/08: CIA-RDP78-03300A002300060003-6
Declassified in Part - Sanitized Copy Approved for Release 2014/05/08: CIA-RDP78-03300A002300060003-6
law of the .14oltationa *nit
raoconvolet thet the units be
Milo &cow% Division for possible interim f
splioattien that each installation to ehseloat for
beano the intenSed survisillasee use.
9. Sines the
capabilitya lot
le to he proevral for
ciltssion
a, it is
available to the
# vith the
systems errivIdo superior
traosetttowe snit tift*, reotime
insering ?n6 field evaluation
rt?ibutic
Addressee Ori g.
AD/TS8/1teD I
AC/teen* 1
TSWIRD
t'SWAPD
APD (29 oe 957)
COir\!FI
50X1
50X1
50X1
50X1
50X1
50X1
Declassified in Part - Sanitized Copy Approved for Release 2014/05/08: CIA-RDP78-03300A002300060003-6