meer — = O O (a) One (1) duplex terminal in AACS message center to See JTF Joint Relay Center. (b) “ (6) (7) (8) (9) One (1) simplex terminal in the weather central ENIWETOK to the Task Force Weather Officer, ISLAND, , PARRY - ~ Install, maintain and operate n1 ecessary AN/TRC back-up for keying and modulation wire lines on ENIWETOK ISLAND, Complete maintenance of all ground equipment operated by the Test Services Unit will be performed by that mit. Perform organizational maintenance of airborne equipment and augment the Test Support Unit for field maintenance of airborne equipment. Furnish necessary air traffic control personnel for on approach control facility in the ENIWETOK A0C, _ (10) Assigned aircraft will have normal conmuniontions-elece. ‘ ; tronics equipment installed. All airoraft will be equipped with the AN/APX-6 transponder. In addition, a7 _ the SA-16's will have a modified AN/APX-6 interrogator operating in conjunction with the installed radar, he GENERAL: ‘as te 4 - Signal Officer, TG 7.2, will operate a crystal grinding facility to provide emergency production of crystals for all elements of the task force, However, every effort will-be made to procure required Pe crystals through established supply channels© prior to commencement of ‘the operational phase, ; : : De Communications operating instructions (corte) published by Headquarters » Joint Task Force SEVEN, will inclufe a list of approved radio and wire circuits, cali signs and frequencies, and uniform task force -- communications operating Procedure, wie : Mask ‘unit commnders are “reeponsible for the suppression of electrical’interference being generated by equipment of their task wits, . and will take necessary action to reduce such noises to a point of non— interference with authorized communications facilities, + “a. See Appendix 1 for complete listing of communications cire cuits and navigational aids available to all elements of Task Group 7.4, together -with frequencies assigned, hours of operation and other pertinent information. ° : - : ; . , s : e A list of frequencies authorized for use by a11 elements of Joint Task Force SEVEN may be found in Communications Operation Instruc- _ tions (cor) Number 20-1. .. .