VESNA-TYPE RADIO RELAY FACILITIES, NORTH KOREA

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78T05162A000500010013-2
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 9
• Document Creation Date: December 28, 2016
• Document Release Date: June 20, 2011
• Sequence Number: 13
• Publication Date: May 1, 1977
• Content Type: REPORT

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Top Secret
NATIONAL PHOTOGRAPHIC
INTERPRETATION CENTER
PHOTOGRAPHIC
INTERPRETATION
REPORT
VESNA-TYPE RADIO RELAY
FACILITIES, NORTH KOREA
Top Secret
MAY 1977
Copy 13 3
PIR-012/77
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Warning Notice
Sensitive Intelligence Sources and Methods Involved
(WNI NTEL)
NATIONAL SECURITY INFORMATION
Unauthorized Disclosure Subject to Criminal Sanctions
NOFORN- Not Releasable to Foreign Nationals
NOCONTRACT- Not Releasable to Contractors or
Contractor/Consultants
PROPIN- Caution-Proprietary Information Involved
USIBONLY- USIB Departments Only
ORCON- Dissemination and Extraction of Information
Controlled by Originator
REL This Information has been Authorized for
Release to ...
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Top Secret RUFF
VESNA-TYPE RADIO RELAY FACILITIES, NORTH KOREA
ABSTRACT
1. This report contains information pertaining to Vesna-type radio relay stations in
North Korea. It updates NPIC report ugust 1976, and includes a location 25X1
map, two photographs, and a table.
2. North Korea has continued to upgrade and expand its radio relay (radrel) com-
munications capability. Construction on a second-generation radrel system equipped with
Vesna horn antennas was initially observed in November 1975.1 This new system will
provide North Korea with an increased capability vis-a-vis the existing parabolic dish
antenna network.
BASIC DESCRIPTION
3. Nineteen Vesna-type radrel stations have been identified in North Korea (Figure 1
and Table 1). Nearly identical in size and configuration, these facilities have common
photographic signatures which include a self-supporting lattice tower, approximately 24
meters high; a circular control building, approximately 10 meters in diameter, beneath the
tower; two support buildings; and at least one power trace extending from the control area.
Terrain elevations of these stations range from 85 to 2,040 meters. None of these in-
stallations is collocated with previously reported radrel stations.2
4. Vesna horn antennas have been observed either tower mounted or lying on the
ground at 16 of the 19 facilities. In most instances, four horn antennas have been identified
at these installations; however, six Vesna antennas have been seen at Yonghung and
Sangwon-ni radrel stations.
5. Of the 19 Vesna-type radrel stations, eight appeared complete and eight were in the
mid- to late-stage of construction by November 1976. The remaining three installations were
in early stages of construction. Interpretable coverage of these 19 stations was not available
between November 1976 and 1 April 1977.
6. At Hyesan Radrel Station (Figures 1 and 2; Table 1), early-stage construction was
in progress on the circular control building and the lattice tower.
7. Construction appeared complete at Najin Radrel Station (Figures 1 and 3; Table 1)
where Vesna antennas were mounted on the lattice tower.
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*19
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Top Secret RUFF
IMAGERY ANALYST'S COMMENTS
8. It is likely that additional Vesna-type radrel stations have been or will be con-
structed where gaps in site locations exist, particularly along the northeastern coast and
possibly in the southwestern quadrant of the country (Figure 1).
9. Because of the configuration of these installations, high-resolution imagery will be
required to provide Vesna antenna orientations.
Table 1. Vesna-Type Radio Relay Stations, North Korea
(Items Keyed to Figure 1)
Sosura Radrel Ste
3 Chongjin Radrel Sta
4 Hyesan Radrel Ste
5 Kanggye Radrel Ste
6 Hwan suw n-n R rel Ste
Pyorha-ri Radel Ste
Koin-ni Radrel Sta
10 Sangwon-ni Radrel Sta
11 Kusong Radrel Sta
12 llimluna a
13 Yomju Radrel Sta
14 Pukchang-ni Radrel Sta
15 Yon hun Radrel Ste
Geographic Coordinates Approximate Elevation
(Meters)
42-16-15N 130-20-40E
42-16-OON 130-35-52E
41-48-25N 129-49-30E
41-16-20N 128-12-10E
41-00-OON 126-39-18E
40-46-30N 128-03-OOE
40-46-OON 126-56-OOE
40-26-30N 127-44-OOE
40-25-20N 126-20-20E
40-07-30N 126-00-10E
40-03-50N 125-09-20E
39-57-OON 127-32-25E
39-52-45N 124-38-30E
39-34-25N 126-00-45E
39-34-20N 126-57-OOE
39-14-15N 125-49-40E
39-12-OON 126-32-50E
39-07-45N 127-24-30E
38-42-20N 127-23-25E
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Top Secret RUFF
MAPS OR CHARTS
DOD. US Air Target Charts; Series 200, Sheets 0290-15, -18, -19, -22 to -24, and 0380-2 to -4, and -8 to -9; scale
1:200,000
1. NPIC.I
SECRET RUFF
2. NPICI
SECRET RUFF)
RCA-03/0020/75, Radio Relay Facilities, North Korea, February 1975, Jun 75 (TOP
25X1
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REQUIREMENT
Project 12120ONE
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List of Conversion Factors by Classification
MILLIMETERS
0.0394
INCHES
KILOGRAMS
2.2046
POUNDS(AVOIR.)
CENTIMETERS
0.3937
INCHES
POUNDS)AVOIR.)
0.4536
KILOGRAMS
INCHES
25.4000
MILLIMETERS
SHORT TONS
0.9072
METRIC TONS
INCHES
2.5400
CENTIMETERS
METRIC TONS
1.1023
SHORT TONS
FEET
(1.3048
METERS
METRIC TONS
0.9842
LONG TONS
FEET
0.0003
KILOMETERS
LONG TONS
1.0160
METRIC TONS
YARDS
0.9144
METERS
METERS
3.2808
FEET
METERS
0.0005
MILES(NAUTICAL)
METERS
1.0936
YARDS
KILOMETERS
3280.8400
FEET
KILOMETERS
0.6214
MILES(STATUTE)
KILOMETERS
0.5400
MILES(NAUTICAL)
LITERS
0.2642
GALLONS
MILES(STATUTE)
1.6093
KILOMETERS
LITERS
0.0063
BARRELS)POL)
MILES(NAUTICAL)
6076.1154
FEET
LITERS
0.0010
CUBIC METERS
MILES(NAUTICAL)
1.8520
KILOMETERS
GALLONS
3.7854
LITERS
MILES(NAUTICAL)
1852.0000
METERS
GALLONS
0.1337
CUBIC FEET
GALLONS
0.0238
BARRELS(POL)
GALLONS
0.0038
CUBIC METERS
BUSHELS
0.0352
CUBIC METERS
CUBIC FEET
7.4805
GALLONS
CUBIC FEET
0.1781
BARRELS(POL)
SQUARE CENTIMETERS
0.1550
SQUARE INCHES
CUBIC FEET
0.0283
CUBIC METERS
SQUARE INCHES
6.4516
SQUARE CENTIMETERS
CUBIC YARDS
0.7646
CUBIC METERS
SQUARE FEET
0.0929
SQUARE METERS
BARRELS(PDL)
158.9873
LITERS
SQUARE YARDS
0.8361
SQUARE METERS
BARRELS(POL)
42.0000
GALLONS
SQUARE METERS
10.7639
SQUARE FEET
BARRELS(POL)
5.6146
CUBIC FEET
SQUARE METERS
1.1960
SQUARE YARDS
BARRELS(POL)
0.1590
CUBIC METERS
SQUARE METERS
1.0000
CENTARES
CUBIC METERS
1000.0000
LITERS
SQUARE METERS
0.0002
ACRES
CUBIC METERS
264.1721
GALLONS
SQUARE METERS
0.0001
HECTARES
CUBIC METERS
35.3147
CUBIC FEET
ACRES
4046.8564
SQUARE METERS
CUBIC METERS
28.3776
BUSHELS
ACRES
0.4047
HECTARES
CUBIC METERS
6.2898
BARRELS(POL)
HECTARES
10000.0000
SQUARE METERS
CUBIC METERS
1.3080
CUBIC YARDS
HECTARES
2.4711
ACRES
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