NEW RADIO RELAY FACILITY CONSTRUCTION, NORTH KOREA

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78T05162A000400010126-8
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 7
• Document Creation Date: December 28, 2016
• Document Release Date: July 14, 2011
• Sequence Number: 126
• Publication Date: August 1, 1976
• Content Type: REPORT

Sanitized Copy Approved for Release 2011/07/14: CIA-RDP78TO5162A000400010126-8
NATIONAL PHOTOGRAPHIC
INTERPRETATION CENTER
PHOTOGRAPHIC
I NTERPRETATION
REPORT
NEW RADIO RELAY FACILITY
CONSTRUCTION, NORTH KOREA
AUGUST 1976
Copy 21
PI R-013/76
Sanitized Copy Approved for Release 2011/07/14: CIA-RDP78TO5162A000400010126-8
 Sanitized Copy Approved for Release 2011/07/14: CIA-RDP78TO5162A000400010126-8
Warning Notice
Sensitive Intelligence Sources and Methods Involved
(WNINTEL)
NATIONAL SECURITY INFORMATION
Unauthorized Disclosure Subject to Criminal Sanctions
DISSEMINATION CONTROL ABBREVIATIONS
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 ...
Sanitized Copy Approved for Release 2011/07/14: CIA-RDP78TO5162A000400010126-8
 Sanitized Copy Approved for Release 2011/07/14: CIA-RDP78TO5162A000400010126-8
Top Secret RUFF
NEW RADIO RELAY FACILITY CONSTRUCTION, NORTH KOREA
ABSTRACT
1. This report contains information about the construction of six new radio relay stations in
North Korea.
This report includes a location map, three photographs, and a table.
INTRODUCTION
2. North Korea has begun a program of new radio relay facility construction which will
provide an improved capability over that of the existing parabolic dish antenna network. Construc-
tion activity was initially observed in November 1975 with concomitant identification of R-600
Vesna horn antennas. None of these new facilities are collocated with previously reported radio
relay stations.'
BASIC DESCRIPTION
3. Six new radio relay stations have been identified in various stages of construction in North
Korea (Figure 1 and inset table). The R-600 system with Vesna horn antennas has yet to be observ-
ed at two of these radio relay stations.
Approximate
Item Installation Geographic Elevation
Coordinates meters
(feet)
3020.408 381
13020-40E (1,260)
701
12,300)
39-57.OON 395
127.3225E (1,296)
Top Secret
Sanitized Copy Approved for Release 2011/07/14: CIA-RDP78TO5162A000400010126-8
41-48.25N 229
1294930E (750)
6 H mhung fiad!el Sta
25X1
25X1
25X1
25X1
25X1
25X1
25X1
25X1
 Sanitized Copy Approved for Release 2011/07/14: CIA-RDP78TO5162A000400010126-8
Top Secret RUFF
4. All six of these facilities are nearly identical in size and configuration. A self-supporting
lattice tower, a circular control building below the tower, and two support buildings adjacent to the
tower are features common to each of the stations.
5. Early-stage facility construction was seen at Pujon Radrel Station (Figure 2) where ex-
cavations for the tower foundations were around the circular control building.
6. At Hamhung Radrel Station (Figure 3), midstage construction was observed. At least three
mounting rings were on the self-supporting lattice tower, and four R-600 Vesna horn antennas were
lying on the ground adjacent to the tower. A circular probable control building was beneath the
tower.
7. In early May 1976, construction was nearly complete at Chongjin Radrel Station (Figure 4),
the only facility where R-600 Vesna horns have been observed mounted on the lattice tower. A cir-
riilar nrnhahlP rnntrnl hiiildino was nhsarvpd hPlnw tha tnwpr
- 2 -
Top Secret
Sanitized Copy Approved for Release 2011/07/14: CIA-RDP78TO5162A000400010126-8
 Sanitized Copy Approved for Release 2011/07/14: CIA-RDP78TO5162A000400010126-8
Sanitized Copy Approved for Release 2011/07/14: CIA-RDP78TO5162A000400010126-8
 Sanitized Copy Approved for Release 2011/07/14: CIA-RDP78TO5162A000400010126-8
Top Secret RUFF
PHOTOINTERPRETER'S COMMENTS
8. Although only six of these new radio relay stations have been identified in North Korea to
date, it is anticipated that more facilities of this type will be constructed throughout the country
and that they will be equipped with R-600 Vesna horn antennas. When completed, this new system
should significantly enhance North Korea's radio relay network.
MAPS OR CHARTS
DoD. US Air Target Charts; Series 200; Sheets 0290-15, -18, -22, and -23 and 0380-4; scale 1:200,000
DOCUMENT
1. NPI
RUFF
REQUIREMENT
Project 360273DC
RCA-03/0020/75, Radio Relay Facilities, North Korea, February 1975, Jun 75 (TOP SECRET
25X1
25X1
-4-
Top Secret
Sanitized Copy Approved for Release 2011/07/14: CIA-RDP78TO5162A000400010126-8
 Sanitized Copy Approved for Release 2011/07/14: CIA-RDP78TO5162A000400010126-8
Top Secret
Top Secret
Sanitized Copy Approved for Release 2011/07/14: CIA-RDP78TO5162A000400010126-8