AIR FORCES/ELECTRONICS

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP79T01184A000200530001-0
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 3
• Document Creation Date: December 28, 2016
• Document Release Date: June 7, 2010
• Sequence Number: 1
• Publication Date: April 30, 1979
• Content Type: REPORT

I I, .I I .. _ .. _ _ -
Sanitized Copy Approved for Release 2010/06/07: CIA-RDP79T01184A000200530001-0 25X1
TOP SECRET RUFF
DISTRIBUTION LIMITED TO
AREAECT Ai r Forces/E1 ectroni cs
DISTRIBUTION:
All PI's
30 Apri 1 19~25X
IEG PI NOTICE
No. ?~
Soviet fixed instrument landing systems (ILS): the SP-50M, SP-50M Podified, and SP-70.
COMMENT: Thls notice provides descriptions and photographs of three fixed Soviet instru-
ment landing systems (ILS)- the SP-50M, an ILS temporarily designated by NPIC as the
SP-50M Modified, and the SP-70.
The SP-50M localizer antenna consists of a horseshoe-shaped array with its open end
towards the runway. Acircular-shaped probable environmental housing for the probable
antenna feed is normally observed within the tips of the horseshoe. The SP-50P~ glide
slope antenna possesses t~n~ rad;~latat~s;.
The SP-50M Modified localizer antenna is also horseshoe-shaped, but possesses less
of an arc than that of the SP-50M. The SP-50M Modified locali~er antenna posesses no
circular-shaped environmental housing, but rather is observed with a "rack" containing
five cylindrical objects positioned immediately in front of the open end of the array,
and a second "rack" of three cylindrical objects even with the tips of .the array. The
SP-50M Modified glide slope antenna possesses three radiators.
The SP-70 locali~er antenna consists of a long bar-shaped array. A parallel,
shorter bar-shaped array is positioned on the side of the long array opposite the end
of the runway. The SP-70 glide slope antenna possesses three radiators.
LOCATION(S)
Numerous Soviet civil and
II
SOURCES: Radio Aids for Aircraft Landing, Short-Range
some Soviet military-asso-
I`davigation, and Secondary Radar Systems", Astronautics
ciated airfields
and Aeronautics, Feb 1975. + KEYFIOLE photography
DISCLAIMER - This is an informal communication intended for circulation within NPIC/IEG only. The conclusions are the opinion of the originator
at the time of issue. Supporting or contrasting views are welcomed, and should be directed to the originator.
25X
( 1 7 9 ~ ~ 3271 E-00
WARNING NOTICE
Intelligence Sources
and Methods Involved
TOP SECRET RUFF
DISTRIBUTION LIMTTF.T) Tn ~
25X1
Sanitized Copy Approved for Release 2010/06/07: CIA-RDP79T01184A000200530001-0
 Sanitized Copy Approved for Releas
SP-50h9 A~odified
Glide Slope Antenna ~
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e 2010/06/07 :CIA-RDP79T01184A000200530001-0 25X1 ~~
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SP-50t~1 Local i Zer Antenna
SP-70 Localiaer Antenna
Sanitized Copy Approved for Release 2010/06/07 :CIA-RDP79T01184A000200530001-0
 Sanitized Copy Approved for Release 2010/06/07: CIA-RDP79T01184A000200530001-0
Watch for Likely Deployment to Unit
Sverdlovsk Poss AT Gun TL6 (001)
erm oss un ow
TL9 (003)
ovos rs oss
Gun
How TL9
004
TL10
005
~ver_lovsk Poss
Gun_How TL10
(006
TOP SECRET RUFF
Div or Degt AT Bns (MRD) AT Regts in Non-Div
Arty Units
Arty Regts in Non-Div Arty Units (replace 130mm
and./or 152mm
Leningrad-SP Gun TL10.5 (008) Hvy Arty Bdes (replace 203mm How)
TL11.2 (009)
122mm SP GUN, M-1974
i,t:crND:
7. Donguz-5P Gun-TL7.4 (007)
8.* Leningrad-SP Gun/How-TL10.5 (008) Related Prototypes
9.* Leningrad-SP Gun/How-TL11.2 (009)
10. Leningrad-SP Unid Veh (Poss Arty Related) (O10)
Naming Structure:
Place where first seen - function - Tube Length (M) - (Sequential Number)
(Except Leningrad SP)
* One of the Perm Guns (002 or 003) and one of the Leningrad Guns (.008 or 009)
have been deployed to units.
Sanitized Copy Approved for Release 2010/06/07: CIA-RDP79T01184A000200530001-0 ,