TASK VI, (SANITIZED)

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03424A001300090012-7
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 12
• Document Creation Date: December 23, 2016
• Document Release Date: January 15, 2014
• Sequence Number: 12
• Publication Date: November 16, 1955
• Content Type: LETTER

Declassified in Part- Sanitized Copy Approved forRelease2014/01/15 : CIA-RDP78-03424A001300090012-7
d141 &-t-r
Washington, D. C.
Attention:
Reference: Task VI,
16 November 12,55 -
5954
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JU T
De
Various changes have been made in the equipment layout
for the control station which alter somewhat the layout originally
presented on the block diagram submitted in February 1955. The
present arrangement is shown on the block diagram of the control
station which is dated 4 November 1955. Three copies of this
diagram are enclosed.
The master control unit comprising the several units as
shown on the block diagram is mounted on a single chassis. An
overall schematic of this unit is enclosed in triplicate.
Detailed circuits for the gate control, the transponder
and control for use at the outstations have been developed.
Three copies of each of these circuits are enclosed. These are
all preliminary, subject to revision, and are dated 4 November
1955. In accordance with the directions as received from
DTI 14 November 1955, none of the drawings enclosed need
be classified except the block diagram of the control station.
Additional drawings will be sent as they become available.
NS:ar
cc: Orig & 1
Sincerely yours
Enc: Block Diagram Control (B) Station (3)
Master Control Unit (3)
Ten Pulse Gate Control - Control Station (3)
Transponder - Outstation (3)
Control for Remote Outstation Operation - Control Station (3)
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
50X1
50X1
50X1
50X1
50X1
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Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
("` srs4kyg!LJLI1,hatri..
General Radio 723C
1000 cycle fork
General Radio
1217
Unit Pulser
Berkeley Counter 5510
Start Stop
0
Camera
Berkeley Counter 5510
Start Stop
0
Start Control
Electronic Gate
& Time Delay
Pulse Amplifier
& Inverter
Wave Shaper
Master
Control
HP AC-4A
Decade
Counter
& Gate
Dumont
Camera
321 A
Dumont Oscilloscope
322 A
Viking Ranger
Outstation A
Outstation C
Collins 51J3
Transmitter
Hammarlund SP-600
Hammarlund SP-600
Receiver
Receiver
Receiver
Unknown
4031.5 kc.
3177.5 kc.
3197.5 kc.
Station
Block Diagram Control (B) Station
4 November 1955
S E- C--- E T
50X1
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
XL3-14N
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
T 005
Camera Start
XL3 I4N
0
27k
BNC
BNC B NC 13 NC
2. 5 rnh.
RY3
27k
01
2D21
Outp)t
socket ffy,
HP AC -4A
27k
Transmitter
80M 0
100k
XL3-13N
Start Control
SW1 Fl
Triad
HSM 207
VR
Jumpers
3 7 3 7
Triad
HSM 307 5000J225w
\R150 VR150
25 2
140 pf.
Master Control Unit
Model 456-1 11-9-35
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
GR Unit
Pulser
. Olpf
6C4
5.6k
Input-Decade
Counter
2. 5mh . 0 lp.f
(---> To Transmitter
27k 005pf
27k
0+ 300v
2D21 2Oppf
< From output of
Decade Counter
18k
100k
Ten Pulse Gate Control - Control Station
(Preliminary)
4 November 1955
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
r? MEM aak,
50X1
+0 1VV\
2D21
82k
Neg- >
39k
I( >Negative Pulse
Out
ative Pulse In
Transponder - Outstation
(Preliminary)
OB-
4 November 1955
AMOK
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
11M
.11???1
+ 300v
Transmitter
RY1 closes at t=0
RY2 closes at t=1/2 sec.
RY3 closes at t=5/6 sec.
RY3
RY2
Gate Circuit
Control for Remote Outstation Operation - Control Station
(Preliminary)
4 November 1955
1111111111
50X1
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
So
239
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
256
XL4-14
27k
Ry 2 Ry 3
Cont Cont.
SW1
1 meg
1/2 12AX7
10 meg
Ry 3
0A3
85001),Iow
-/V\A
82k
0A2 1 w
115k
2w
33k
SW2
A
B SW3 50002
4 cro c:
Ry 2
Cont.
1-ISM- 205
Etlx_
-5Y3G
1 meg
2D21
100k
HSM 305
meg
50
A
500012,
10 w
470k
39k
OD3
?30
0D3 Jumpers
-L30
500001),
10 w
Transponder - Outstation (Supersedes - Transponder dated 4 November 1955) 28 December 1955.
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
OD3
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15 : CIA-kDP78-03424A001300090012-7
Legend
? Clear frequency band
Assi n.ecl frequency areas
ASS
Definitions
Clear frequency band is one in which
any signals received are below the
AVC threshold of the Collins 51J. Note
that the S meter on the 513 is ca.li-
brated in db above the AVG threshold.
General Notes
Noise light in A. M. (Noise = atmos-
pheric noise). It grew heavier as the
day progressed until furth_Sx' monitor-
ing after 3:00 P.M. was not of much
use. Noise levels covered approxi-
mately 60% of signals.
Note that each clear frequency shown
is separated from the nearest inter-
ference by 15 kc on both ends of the
clear band.
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
0
Ni
Ni
cel
Local Time
0830
0900
0930
1000
1030
1100
1130
1200
1230
1300
Legend
Indicates clear frequency band
Indicates present assigned fre-
quency regions. Dotted line
shows serious interference.
Definitions
A clear frequency or band of frequen-
cies is defined as one in which no
signal received is above the threshold
of the AVG of the Collins 51,13 receiver
with its RF gain control at maximum.
Note that the S meter of the Collins
51,1'3 is calibrated in db above the AVC
threshold'.
1330
1400
1430
1500
1530
1 600
1 630
1700
Note: The beginning and end of each
clear band of frequencies (solid_
lines) is separated from any in-
terference by 15 kc.
Frequency Search
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
Declassified in Part - Sanitized Copy Approved for Release 2014/01/15: CIA-RDP78-03424A001300090012-7
1
0 \ se
__cir4s-A-
v 1
2D2I
R8
68k
1w
Vc.1
R13
27k