Documents / FOIA release
This Central Intelligence Agency release, declassified in 2007 under the Nazi War Crimes Disclosure Act, is part of the collection CIA and the Origins of the BND, 1949-56, Volume 2, in the section on ZIPPER operations and counterintelligence. It contains early 1950s memoranda on Russian, Ukrainian and other emigre groups, a plan for a stay-behind network and for evacuating ODEUM staff if war broke out, a JUPITER status report dated 16 April 1951, and evaluations of Zipper reports. It does not discuss UFOs.
“Cooper”12 pages
(1) (2) (3) (4) (5) Secret REL Ger SME SECRET/RELEASE TO GERMANY ONLY (16) Radio metes Planning of the connection between sourcee and radio operators, and the oonatruction of radio realdenturas, radio headquarters or radio group,. (17) Regulation of radio and cods matters Inside of reale headquarter:1 and tesidenturse. b. ResIlltg The seourity of radio comma procedure is not effected by the fact that the enemy has gained considerable know- 10Age, niece it was developed from the beginning In such a way that no conclusions in regard to other radio Channels could be drawn from the knowledge of one radio Channel. The security of the cipher remains completely unaffected by . the results of the nape. All secret messages sent in are drawn Up so that the enemy, even with *exact know- ledge of the cipher, is unable to decipher enciphered messages by %Weans procedure. Since the call sign tables which had been used previously were pictured in.the Soviet Zone press, it was decided, for purely psychological reasons, to introduce now call sign tattles. Since the new call sign tables are easier to use than the old ones, the flaps only gave the final push to their introduction. Phonograph records for use in Morse code training wore' probably found with 'several radio operators who fell into the hands of the enemy. Since we cannot do with- out these records in the future new labels will have to be printed. It can be expected that auoh records will be especially sought after in future house searches. All types of sets fell into the hands of the enemy as a result of the flaps. The possibility of using these (types Of) sets has naturally not suffered there*, in the purely technical sense. . (6) The kinds of packing or concealment used for the trans- port of radio sets into the GDR have become known to the opposition. This knowledge will undoubtedly evidence itself in the future in increased danger to our trans- ports of radios. Suggestions for new methods of peeking can come only from the field operating bases since 'packing and concealment methods must be adapted to the available possibilities of transport. SECRET/RELEASE SEC4ET 729 TO GERMANY ONLY REL Ger Secret
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FOIA release, from the cia-readingroom collection. The PDF is mirrored here; the original link is above. 218 pages are in the text index: search them above, or from the library's search.