Declassine4 vr pop pIR 5200,10 ~, “% will be completed by 31 December 1 b. Duclossified DOD DIP £299.19 e Signal Officer, TG 7.2, will operate a crystal grinding facil- ‘4ty to provide emergency production of crystals for all elements of the Task Force. However, every effort will be made to procure all required -erystals through established supply channels prior to conmencemieritof the operationalpase, ce. Communications operating instructions (COI's) publi shed by Headquarters, Joint Task Force SEVEN, will include a list of approved radio and wire circuits, call signs and frequencies, and uniform Task Force comminications operating procedure, _ @, -All aircraft with the exception of liaison type (L-13's) and helicopters will have theAN/APX~6 transponderinstalled, ose a e. . Task Unit Commanders are responsible for the suppression of electrical. interference being generated by equipment of their Task Units, and will take necessary action to reduce such noises to a point of noninterference with authorized communications facilities, 5 Appendices (To be added later) Sieh: 1: Trl I 1. 2. 3. Communications Circuits Frequencies _ Call Signs, Code Words - HOWELL M. ESTES, JR. Brigadier General, U.S.A.F, , Commander , . 4, Communications Security 5. Air-to-Air and Air-to-Ground | Channelization OFFICIAL: QV SMe; we CHARD S. NUGENT Lt Colonel, USAF Communications Officer TASK GROUP 7.4 OPRS ORDER NO. 1-53 ANNEX D D-6 Declassified DOD DIR 5200.19 Bop7Otitieg o, 5200.1»

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