FIXED COMMUNICATIONS STATIONS, NORTH VIETNAM

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78T05439A000400300041-3
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 15
• Document Creation Date: December 28, 2016
• Document Release Date: August 1, 2000
• Sequence Number: 41
• Publication Date: November 1, 1964
• Content Type: REPORT

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CIA/PIR-35/64 NO FOREIGN DISSEM TCS-9059/64
November 1964 Copy 5
13 Pages
-CENTRAL INTELLIGENCE AGENCY
PHOTOGRAPHIC INTELLIGENCE REPORT
FIXED COMMUNICATIONS STATIONS,
NORTH VIETNAM
Declass Review by NIMA/DOD
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PHOTOGRAPHIC INTELLIGENCE DIVISION
F-1
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NO FOREIGN DISSEM
FIXED CO-MMUNICATIONS STATIONS,
NORTH VIETNAM
NATIONAL PHOTOGRAPHIC INTERPRETATION CENTER
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November 1964
 international broadcasting station, and 3 small
point-to-point communications stations (Figure
1). This report locates and describes these
stations, and furnishes pertinent mensural and
technical data for each.
 HANOI POINT-TO-POINT
TRANSMITTING STATION
A large point-to-point high-frequency (HF)
transmitting station (Figures 2 and 3) is situated
approximately 5.7 -nautical miles (nm) south-
 The support area contains approximately 13
administration and housing-type buildings. Sur-
rounding these areas are ?2 large-and 2 small
double rhombic antennas arranged as pairs
for day-night operations, one double rhombic
antenna, 2 medium-sized single rhombic an-
tennas arranged as_ a pair, 2 medium-sized
single rhombic antennas, and approximately 27
scattered stick masts. Pertinent mensural and
technical data are given in Table 1?.
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HANOI-QUE DUONG INTERNATIONAL
"RECEIVING STATION
A large point-to-point receiving station
(Figures 4 and 5) is situated approximately 8.6
nm west-northwest of the Hanoi Marshaling
Yards at 21-03N 105-41E. The absence of
cooling ponds and the presence of the la ge.
Hanoi point-to-point transmitting station in
care That this is most probably a receiving
station. It has- a walled area that contai a
control building and approximately 17 of er
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 housing and related buildings. Antennas are and 4 single rhombics. The antennas are dis-
arranged in a roughly circular pattern surround- persed for diversity reception. In addition,
ing the walled area, and include 3 large and 3 there are at least 14 stick masts scattered
small double rhombics arranged in pairs for throughout the area. Pertinent mensural and
day-night operations, 2 other double rhombics, technical data are given in Table 2.
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FIGURE 6. HANOI-ME TRI INTERNATIONAL BROADCASTING STATION.
HANOI-ME TRI INTERNATIONAL
BROADCASTING STATION
A large HF radio station (Figures 6
and 7), used for international broadcasting,
is situated approximately 4.3 rim southwest-
of the Hanoi Marshaling Yards at 21-OON
105-47E. The station contains two -large
self-supporting lattice towers, each with a
55-foot crossboom on top, suppor ing the
director-reflector curtains of a horizo tal cur-
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 tain array. The station also contains 3 large
and 3 small double rhombic antennas arranged
as pairs for day-night operations. Pertinent
mensural and technical data:are given in Table 3.
In addition, approximately 10 stick masts are
scattered throughout the antenna area. Support
facilities located within a large fenced area in-
clude a transmitter building, a cooling pond,
and 8 other buildings; over 20 other buildi gs'
are in an adjacent, partially fenced area.
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-Pole mast
Road
-~- Fence
------ Cable scar
25X:1 D
3.3 nm south-southwest of Dien Bien Phu"Air-
field at 21-22N 103-OOE. This station has the
same general layout and size and almost iden-
tical components as the Dong Hoi station, and
for this reason is-not covered in greater detail
The two probable antennas are oriented oXn an -
azimuth o 25X1
'MON CAY POINT-TO-POINT
COMMUNICATIONS STATION
A small point-to-point communications sta-
tion (not illustrated) is situated approximately
one nm southeast of the center of Mon Cay at
21-32N 107-59E,- The general layout, size,
and components are essentially the same as at
the Dong Hoi station. The two probable antennas
are oriented on an azimuth of
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DONG HOI POINT-TO-POINT
COMMUNICATIONS-STATION
A small HF point-to-point communications
station (Figure 8) is situated approximately 4 nm
north-northeast of Dong Hoi at 17-32N 106-35E.
The station consists of a fenced area, 6 control/
support buildings, and, immediately north-north-
west, 4 pole masts that probably support two hor-
izontal dipole antennas. Each probable antenna
has a 145-foot mast se aration and is oriented
on an azimuth of Afenced area
of unidentified activity is approximately 3,500
feet to the east-northeast and is connected to
the station by road and by cable scar.
DIEN BIEN PHU POINT-TO-POINT
COMMUNICATIONS STATION - -
A small point-to-point communications sta-
tion (not illustrated) is situated approximately
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 GENERAL ORIENTATION
.The azimuths of the. antennas at the three
Hanoi area stations, as listed in the pertinent.
tables, have been plotted on their great-circle
projection. in order to illustrate their general
orientation (Figure 9); because of the numerous
technical limitations involved, these projections
should be considered only as approximations.
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TCS-9059/64
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An
Length (ft)
Mast Height (ft) i*~
Tilt
;
Major
Minor
O
Azimuth
le"
An
NJ
o
Axis
Axis
no.
Side>
Major
x
Axis
Minor
xis
A
g
(? ')
(?)
'ingle 605 290
rhon- :bi,
Single
Double
Double
Douh!,,
D ~"hi~?
-
- ,5
Bombay, India
New Delhi, India
Alma-Ata, USSR
Alma-Ata, USSR
Alma-Ata, USSR
-!-,r.:,hic 190 3:35
Single
S0 110
Alma-Ata, USSR
Karaganda, USSR
rhombic 41) :340
Karaganda, USSR
-All measurement;'- are x
ohliquity of photq_raphv
"Computed measurement
because of ex
treme difficulty in l
ocating exact p
osition o
f masts and
Ta51e
Iianoi-blue Du
ong International Be
cciting Station
'
-Ty pe
Major
Minor
One
M
ajor
Minor
Angle"
"'
General Orientation
I
Double
Axis
Axis
Sicie"
Axis
Axis
(? ')
rhombic
4:3 210
55 70
.alma-Ara, USSR
2
Double
rhombic
SS 115
Alma-Ata
USSR
3
mingle
,
rhombic
600 39
90 S:i
Bombay, India
4
Double
-
rhombic
615 :309
n0
New Delhi, India
5
Double
rhombic
425 200
+.+ . ..>
Alma-Ata
USSR
6
Double
,
rhomhic
730 360
SO 70
Alma-Ata, USSR
7
Double
rhomhic
Double
610 3S5
75
New Delhi, India
rhomh c?
490 335
70 +'>
-Alma-Ata
USSR
9
Doublo
,
rhombic
S5O 400
90 - 1:30
Alma-Ata
USSR
10
,
rhor-:,
600 290
sS '"
New Delhi, India
rhombic'
610 295
75 - Sa
Djakarta
Indonesia
12
tn_li
,
rhombic
600 390
'
SO 85
Peiping, China
?All mea-urements are gem approximatebecause of extreme difficulty in
locating exact position of masts and
c hlIq-iir?x of photo,?raphy
"Computed c asurernent
"'Measurement precluded he photographic limitations
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 Curtain array
Tower
Double rhombic
410
340
Double rhombic
330
175
Double rhombic
-115
240
.alma-Ata"Area, USSR
Double rhombic
300.
190
Alma-Ata Area,.USSR
Doubld rhombic
:360
3110
Peiping, China
Double rhombic
520
250
Peiping, China
*All measurement., are very approximate because of extreme difficulty in locating exact position of masts and
ohltquit-~ of photography
"Computed measurement
Hanoi Area Stations
CNO. US Air Target Chart, Series 200, Sheet 0616=19A, 1st ed, Jul 59, scale 1:200,000 (SECRET)
Dig Hoi
DIA. US Air Target Chart, Seri.es 200, Sheet 0617-19HL, 3d ed, Jan 64, scale 1:201),0011 (SECRET)
DIA. 1'S Air Target Chart, Series 200, Sheet 0616-17HL, 2d ed, Sep 63, scale 1:30(1,000 (SECRET)
\lon Cay
'USAF. CS Air Target Chart, Series 200, Sheet S0615-16A, 1st ed, Jul 59, scale 1:200,000 (SECRET)
 This document contains classified information affecting the national security of the United States within the
meaning of the espionage laws U. S. Code Title 18, Sectiot+s 793 and 794. The low prohibits its transmission
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prejudicial to the safety or interest of the United States or for the benefit of any foreign government to the -
detriment of the United States. It is to be seen only by personnel especially indoctrinated and authorized to
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