LOW FREQUENCY BANDING

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B03826A000300010096-6
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 1
• Document Creation Date: December 28, 2016
• Document Release Date: March 8, 2007
• Sequence Number: 96
• Publication Date: October 21, 1970
• Content Type: CABLE

Approved For Release 2007/03/09: CIA-RDP78BO3826A000300010096-6
SECRET
S E C R E T 21195 1Z OCT 70 CITE 96 6 25X1
PRIORTTY 11 fir x 3.1
SUBJ: LOW FREQUENCY BANDING
REF Al OLD HEAD SORTIES
B:
SEC .e
1. REF B REQUESTED PROVIDE ADDITIONAL INFORMATION ON LNX1
FREQUENCY BANDING (ALTERNATE US/MINUS DENSITY BANDS) WHICH OCCURRED
ON SEVERAL OLD HEAD MSNS.
2. WIDTH OF EACH BAND, AS MEASURED FROM BEGINNING OF ONE PLUS/MINUS
DENSITY BAND TO BEGINNING OF NEXT/MINUS DENSITY BAND, VARIES FROM
APPROX 1.0 TO 1.25 INS.
3. GENERAL PATTERN OF BANDING APPEARS SIMILAR; HOWEVER, IT DOES NOT
EXHIBIT A CONSISTENT PATTERN OF OCCURRENCE FROM MSN TO MSN, WITHIN A MSN,
CR WITHIN INDIVIDUAL FORMATS.
4. THE BANDING OCCURRED ON MSNS G-128, 133, 135 AND 138, EACH OF
WHICH USED AIRCRAFT NUMBER 340 BUT DIFFERENT CAMERA UNITS (EG., 8011,
8007, 8007 AND 8006 RESPECTIVELY). THE CAMERA CYCLE RATE FOR MSNS
G-133 135 AND 138 WAS SLOWER THAN NORMAL AND SMEARED IMAGERY, WHICH
APPEALS TO BE ASSOCIATED WITH THE BANDING, IS PRESENT (THE SMEARED
PAGE 2 Q 9616 S E C R E T 25X1
IMAGERY IS NOT ISOLATED TO THE BANDING). APPROX 95 PCT OF MSN G-128
IS OBSCURED BY WX AND THE QUESTION OF SMEARED IMAGERY FOR THAT MSN
COULD NOT BE ANSWERED. THE CAMERA CYCLE RATE FOR MSN G-12 . .'j':oN
NORMAL.
S E C R E T
Ur- I
/ J O
END OF MESSAGE
ADVANCE CY
SANITIZED
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Approved For Release 2007/03/09: CIA-RDP78BO3826A000300010096-6