HSIEN-YANG RADIO COMMUNICATIONS STATION, CHINA

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78T05161A000100010056-7
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 9
• Document Creation Date: December 28, 2016
• Document Release Date: August 12, 2003
• Sequence Number: 56
• Publication Date: April 1, 1964
• Content Type: IR

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CIA/PIR-1004/64
April 1964
HSIEN-YANG
RADIO COMMUNICATIONS STATION,
CHINA
DECLASS REVIEW by NIMA/DOD
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This document contains information affecting
the national defense of the United States,
within the meaning of Title 18, sections
793 and 794, of the U.S. Code, as amended.
Its transmission or revelation of its contents
to or receipt by an unauthorized person is
prohibited by law.
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CIA/PIR-1004/64
HSIEN-YANG RADIO COMMUNICATIONS STATION, CHINA
The Hsien-yang Radio Communications sta-
tion is located at 34-23-ION
108-41-45E, approximately 2.5 nautical miles
north-northwest of Hsien-yang, China (Figure 1).
The station is single fenced and consists of an
operations area and a support area (Figures 2
and 3). It covers approximately 315 acres and
has maximum dimensions of 4,650 by 2,950 feet.
A review of photography of
indicates no change since
The operations area contains 3 multistory
transmitter buildings, 2 probable antenna-tuning
houses, 2 unidentified structures, and 25 self-
supporting lattice towers, each bearing a 45-
foot-long crossarm. Table 1 provides detailed
information on the various buildings at the sta-
tion. The direction of cable scars from the
transmitter buildings, and the location of prob-
able transmission points near the probable an-
tenna-tuning houses at two of the transmitter
FIGURE 1. LOCATION OF HSIEN-YANG STATION, PLOTTED ON GNOMONIC PROJECTION, SHOWING PROBABLE DIRECTION OF
TRANSMISSIONS.
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buildings (items 4 and 6), indicates that each of
the transmitter buildings probably serves a
separate group of antennas. Each transmitter
building has an oval-shaped cooling pond which
consists of an inner area 85 by 30 feet and
an outer area 125 by 75 feet. Photography
of reveals that all three cooling
ponds contain water, but only one (that at
item 5) is completely filled.
The 25 lattice towers support 20 high-
frequency curtain arrays, and the crossarms on
the towers indicate that each curtain array could
have a reflector screen and/or beam switching
capacity. Ground marks between the towers are
probably vertical feed points. It is assumed that,
if these feed points are connected by feed lines
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0
OO
OO
500
Road
Fence
Wall
Trail/cable scar/ground scar
Probable transmission points
Self-supporting lattice tower
Feed routing point
Transmission line feed routing point
Probable vertical feed point
Cooling pond
to probable end-fed and/or center-fed, one-half-
wavelength dipoles, then the curtain arrays
should contain a total of 128 bays. It is also
assumed that a bay is equal to a one-half-wave-
length dipole. Table 2 gives the approximate
frequencies, azimuths, and other data for the
curtain arrays. A summary of this information,
showing the number of bays of similar azimuth,
6
height, and frequency is given in Table 3. Infor-
mation on the lattice towers, contained in Table
4, was the basis for the information compiled
on the curtain arrays in Table 2.
The support area consists of an administra-
tion building, 15 storage or barracks buildings,
a probable security building, and a transformer
building.
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1 Single story,
flat roofed
2 Multistory,
monitor roofed
3 Single story
flat roofed
4 Multistory,
monitor roofed
5 Single story,
flat roofed
6 Multistory,
monitor roofed
7 Multistory,
monitor roofed
Support Area
8
Single story,
flat roofed
Single story,
gable roofed
10 Single story,
gable roofed
11 Single story,
gable roofed
12 Single story,
gable roofed
13 Multistory,
gable roofed
14-16 Single story,
gable roofed
17 Single story,
gable roofed
18 Single story,
gable roofed
19-24 Single story,
gable roofed
25 Single story,
gable roofed
55 x 25
Secured, probable antenna-tuning house
105 x 40
Unidentified
55 x 25
Secured, probable antenna-tuning house
250 x 50
Transmitter building
145 x 45
Unidentified
250 x 50
Transmitter building
145 x 105
(overall)
Transmitter building
125 x
35
Transformer building and power sub-
station in 230' x 230' secured area
35 x
30
Probable administrative building
195 x
30
Storage or barracks building
140 x
20
Storage or barracks building
125 x
20
Storage or barracks building
105 x
50
Probable barracks building
115 x
20
Storage or. barracks building
105 x
30
Storage or barracks building
55 x
25
Storage or barracks building
90 x
20
Storage or barracks building
50 x
30
Probable security building
Curtain
Maximum
Distance
Azimuth
Number of Bays
Approximate
Antenna
*
Height of
Between
*
(degrees)*
(half-wavelength
Nominal Design
Array
Curtain (ft)
Towers (ft)
dipoles)
Frequency (me)***
220
175
175
295
380
335
335
470
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Curtain
Maximum
Distance
Azimuth
Number of Bays
Approximate
Antenna
Height of
Between
(degrees)**
(half wave-length
Nominal Design
Array*
Curtain (ft)
Towers (ft)
dipoles)
Frequency (me)***
365
365
220
295
365
365
mn 365
no 365
op 295
qr 220
rs 365
st 365
to 295
uv 175
440
440
380
470
470
440
440
440
470
380
440
440
490
345
wx 175 345
xy 220 380
5- 7
5- 7
14-16
9-11
5- 7
5- 7
5- 7
5- 7
8 8-10****
8 14-16
4 5- 7
4 5- 7
8 14-16
8 14-16
8 11-12****
*Curtain antenna array designators are based on the letters on Figure 3 identifying the towers between which each array
is suspended.
**See Figure 1.
***All frequency computations are based on the identification of the marks between towers as vertical feed points and the
approximate distances between these points.
****Reliability uncertain.
Number
of
Bays
Curtain
Antenna
Array
Designator
kl, Im, mn, no
op
jk
ab, xy
be, wx
rs, st
of
de
qr
eg, gh
to
uv
hi
Maximum
Height (ft)
365
295
295
220
175
365
295
175
220
365
295
175
220
Approximate Nominal
Design Frequency (me)
5- 7
8-10
9-11
11-12
14-16
5- 7
9-11
14-16
14-16
5- 7
8-10
14-16
14-16
Azimuth
(degrees)
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Height of
*
Distanc
e Betwe
en
*Distance Between Feed
Tower (ft)
Towe
rs (ft)
Points and/or Towers (ft)
220
380
75,
85, 60,
85, 75
220
335
65,
70, 65,
60, 75
175
175
335
75,
60, 65,
60, 75
295
470
95,
95, 90,
95, 95
365
440
135, 165, 140
365
440
140, 165, 135
365
3 80
80,
75, 70,
70, 85
220
295
470
95,
95, 90,
95, 95
365
440
140, 165, 135
365
440
140, 165, 135
365
440
140,165,135
365
440
140, 165, 135
365
470
90, 110, 70, 110, 90
295
220
380
85, 70, 70, 70, 85
365
440
140, 165, 135
365
440
145, 160, 140
365
490
95, 110, 75, 110, 95
295
345
75, 65, 65, 65, 75
175
175
345
70, 70, 60, 75, 70
220
380
75, 85, 60, 85, 75
220
ACIC. US Air Target Chart, Series 200, Sheet 0384-15A, 2d ed, Jan 60, scale 1:200,000 (SECRET)
USAF. Special Gnomonic Tracking Chart GT44S(E), Nov 51, revised Feb 57 (CONFIDENTIAL)
REQUIREMENT
NSA. NSA/P043/R38-63(C)
PROJECT
C-1714/63
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