4 % 2 AVAy, Sea @ SEsr) “4 Communications WA 6. j Wa oy od roe , 4 CJTFSEVENNo. 3-53 we - - os ° se BLE Cc Opy Assignment of Communication Responsibilities a. Mission, J-5 Division, Headquarters, JTF SEVEN (1) Coordinate overall task force commnications and electro- nics activities. (2) Assign and control all radio frequencies, call signs, oy address groups and routing indicators. 4 oe (3) Maintain operational control of the communications security monitoring unit. Prepare for CJIF SEVEN reports of security viola- ‘2 a4 oa tions. . (4) Operate communications center and crypto facilities at Has, JTF SEVEN, Washington 25, D. C. + (5) Control utilization of teleconferencing facilities in the ENIWETOK~BIKINI area. ‘ x * f (6) Prepare Headquarters, JTF SEVEN telephone directory. (7) Prepare and distribute COIs (Communication Operation Instructions). (8) Provide for operation and maintenance of terminal VHF ci- phony facilitiles (USS ESTES-Reg (9) Control distribution of available SIGTOT-SAMSON equipment and tapes to meet operational requirements of the task force. (10) Maintain a transmission security training program for all users of voice radio facilities and a message drafter improvement program to insure most efficient use of limited operational comm... nication facilities. Fo ce: - (a1) Prepare and distribute to alltask groups the Operation . CASTLE Joint Authentication System (AFSAL 5369). b. Sedentific Task Group (1G 7.1) “ . (1) Operate and maintain special electronic and communications equipment required by the Scientific Task Group; this to include E.G. & G. terminal equipment at PARRY and ENYU for the TG 7.1 HF duplex voice and RATT circuits. (2) Initiate yoice-time broadcast for all elements of the task force, 5 ce. Army Task Group (TG 7.2) Sw erate ard wale ate ata. cette. DTTTOR. (2) Operate and maintain communications centers for Hqs, JTF SEVEN (PARRY ISLAND), Hqs, TG 7.2 (ZNIWETOK ISLAND) and in support of AEC operations at BIKINI ATOLL. (3) Provide erypto guard facilities for Hes, JTF SEVEN, TG 7.1, 702, 7ehy 7.5 and for other than intra TG 7.3 (ashore) traffic. :