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1840Z 26 July 1967 transmitted message text from
Commander-in-Chief, U.S. Naval Forces Europe to
Chief of Naval Operations


R 261840Z JUL 67
FM CINCUSNAVEUR
TO CNO
BT
S E C R E T US EYES ONLY
LIBERTY REPORTED JAMMING (S)
A. NAVCOMMUNIT NAPLES 112310Z JUL 67
1. (C) CONCUR PARA 5 REF A, UNDER THE CIRCUMSTANCES IN EXISTENCE
AT THE TIME CAN SEE NO REASONABLE EXPLANATION FOR ELECTRONIC
JAMMING OF THE TYPE DESCRIBED.
2. (S) THE POSSIBILITY OF THE SIGNALS BEING GUIDANCE SIGNALS
FOR AIRCRAFT ROCKETS IS NOT DISCOUNTED, UNFORTUNATELY NAVEUR
HOLDINGS CONCERNING THE ISRAELI MIRAGE WEAPONS SYSTEM ARE
EXTREMELY LIMITED. IT WOULD BE INTERESTING TO KNOW IF THE
ISRAELIS ARE USING FRENCH AIR TO SURFACE ROCKETS OR AIRCRAFT
ROCKETS OF THEIR OWN DESIGN AND MANUFACTURE. HAVE NOTHING TO
PROVE THAT THE ISRAELIS HAVE IN FACT DEVELOPED THEIR OWN AIR TO
SURFACE ROCKETS BUT THIS IS A POSSIBILITY. ANSWERS TO THE
FOLLOWING COULD PROVIDE INSIGHT INTO THIS "JAMMING" PROBLEM:
   A. DO WE KNOW OF ANY ISRAELI DEVELOPMENT INFIR TO SURFACE
ROCKETS FOR USE WITH THEIR MIRAGES? IF SO, WHAT ARE THE
ELECTRONIC PARAMETERS OF THE GUIDANCE SIGNALS?
   B. WHAT ARE THE ELECTRONIC PARAMETERS OF THE GUIDANCE SIGNALS
OF FRENCH AIR TO SURFACE ROCKETS NORMALLY ASSOCIATED WITH THE
MIRAGE?
   C. COULD AIRCRAFT ROCKET GUIDANCE SIGNALS PROCUED THE JAMMING
EFFECT REPORTED BY LIBERTY?
3. (U) RECOMMEND THIS SUBJECT BE REVIEWED BY TECHNICAL AGENCIES
IN THE INTELLIGENCE COMMUNITY.
GP-4
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