MODIFIED TWIN DISH YUZHNO SAKHALINSK, USSR (SANITIZED)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP84T00491R000101920001-4
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 5
• Document Creation Date: December 28, 2016
• Document Release Date: March 2, 2012
• Sequence Number: 1
• Publication Date: March 29, 1984
• Content Type: MISC

Declassified in Part - Sanitized Copy Approved for Release 2012/03/02: CIA-RDP84T00491 R000101920001-4
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Declassified in Part - Sanitized Copy Approved for Release 2012/03/02: CIA-RDP84T00491 R000101920001-4
 Declassified in Part - Sanitized Copy Approved for Release 2012/03/02: CIA-RDP84T00491 R000101920001-4
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Declassified in Part - Sanitized Copy Approved for Release 2012/03/02: CIA-RDP84T00491 R000101920001-4
 Declassified in Part - Sanitized Copy Approved for Release 2012/03/02: CIA-RDP84T00491 R000101920001-4
Declassified in Part - Sanitized Copy Approved for Release 2012/03/02: CIA-RDP84T00491 R000101920001-4
 Declassified in Part - Sanitized Copy Approved for Release 2012/03/02: CIA-RDP84T00491 R000101920001-4
JCI.RC I
(c) NATIONAL PHOTOGRAPHIC INTERPRETATION CENTER
Page 1 of 2 Attachment to Z-17275/84
NPIC/IEG
Copy 29 MARCH 1984
MODIFIED TWIN DISH
YUZHNO (SWN)
1. SIGNIFICANCE: THIS IS THE THIRD IDENTIFICATION OF THIS
SYSTEM IN THE USSR AND THE FIRST IDENTIFICATION OF
TROPOSCATTER RELAY EQUIPMENT WITH THE SIGNAL REGIMENT FOR THE
U/I ARMY AT YUZHNO SAKHALINSK. (SWN)
2. REMARKS: A MODIFIED TWIN DISH (FORMERLY UL-EL-01)
TROPOSCATTER RELAY SYSTEM WAS OBSERVED FIELD DEPLOYED 7.5 NM
SOUTH-SOUTHEAST OF YUZHNO SAKHALINSK AL-8, WHICH HOUSES AN
ARMY-LEVEL SIGNAL REGIMENT. THE ANTENNAS WERE ORIENTED
EAST-SOUTHEAST TOWARD THE KURIL ISLANDS. (SWN)
A POSSIBLE RELATED SIGNAL DEPLOYMENT WAS 1.S NM NORTH AND
INCLUDED EIGHT SIGNAL VEHICLES, A COMMUNICATIONS CENTER OF
SEVEN RADIO VAN TRUCKS, AND SIX VEHICLES IN REVETMENTS (ONE
VEHICLE APPEARED TO BE CANVAS COVERED). (SWN)
BOTH THE NEW AND OLDER VERSIONS OF THE TWIN DISH HAVE TWO
10-METER PARABOLIC DISHES THAT ARE GROUND MOUNTED ON A V-BAR
LATTICE MAST WITH TWO LATTICE SUPPORT ARMS. HOWEVER, THERE
ARE STRUCTURAL, MOBILITY, AND OPERATIONAL DEPLOYMENT
DIFFERENCES BETWEEN THE TWO SYSTEMS. FIRST, THE MODIFIED
TWIN DISH ANTENNA HAS A SOLID, CENTER RING WITH A
MESH OUTER RING COMPOSED OF 18 SEGMENTS. BY CONTRAST, THE
STANDARD TWIN DISH ANTENNA IS COMPLETELY MESH CONSTRUCTED
WITH A TWO RUNG-LADDER-SHAPED DESIGN IN ITS CENTER RING.
SECONDLY, USE OF NEWER AND MORE VERSATILE URAL-375 TRUCKS
INSTEAD OF THE ZIL-157 TRUCKS USED WITH THE OLDER SYSTEM HAVE
IMPROVED TRAFFICABILITY. FINALLY, WHEN THE MODIFIED TWIN
DISH IS OPERATIONALLY DEPLOYED, ITS VEHICLE LAYOUT PATTERN IS
DIFFERENT AND MORE CLOSELY RESEMBLES THAT OF A TWIN PLATE
STATION. (SWN)
These notes have been prepared for briefing purposes only and should not be used for detailed analytical work.
Their use should be restricted to the particular briefing board(s) they were prepared for and must be considered
valid only for the reporting period as indicated by the date of issue.
WARNING NOTICE
INTELLIGENCE SOURCES
OR METHODS INVOLVED
SECRET
Declassified in Part - Sanitized Copy Approved for Release 2012/03/02: CIA-RDP84T00491 R000101920001-4
 Declassified in Part - Sanitized Copy Approved for Release 2012/03/02: CIA-RDP84T00491 R000101920001-4
(c) NATIONAL PHOTOGRAPHIC INTERPRETATION CENTER
Page 2 of 2
Copy
Attachment to Z-17275/84
NPIC/IEG (3/84)
29 MARCH 1984
THE TWO OTHER SIGHTINGS OF THE MODIFIED TWIN DISH HAVE BEEN
WITH ABOVE FRONT LEVEL SIGNAL UNITS ONLY. THE SYSTEM'S FIELD
DEPLOYMENT TO THIS AREA OF THE FAR EAST COULD PRESAGE FURTHER
DEPLOYMENTS AND EXPANSION OF SOVIET HIGH LEVEL TROPOSCATTER
COMMUNICATIONS WITHIN THE FAR EAST THEATER AND THUS-IMPRnVE
FAR FAqT COMMAND AND CONTROL CAPABILITIES, (SWN) 25X1
25X1
3. I (COORDINATES 46-57-04N 142-44-54E (S)
4. COLLATERAL REFERENCE: DIA, WARSAW PACT GROUND FORCE
STRUCTURE TROOP LIST FAR EAST TVD (U) VOLUME II,
DDB-1100-375-83, AUGUST 1983, S/NOFORN THE EXTRACTED
MATERIAL IS CLASSIFIED S/NOFORN
These notes have been prepared for briefing purposes only and should not be used for detailed analytical work.
Their use should be restricted to the particular briefing board(s) they were prepared for and must be considered
valid only for the reporting period as indicated by the date of issue.
WARNING NOTICE
INTELLIGENCE SOURCES
OR METHODS INVOLVED
SECRET
Declassified in Part - Sanitized Copy Approved for Release 2012/03/02: CIA-RDP84T00491 R000101920001-4