Vi2 with the 13 7.4 air rehearsal in the Bikini area, Air control avi ship-shore circuits were activated, in addition to all normal under= way cireuite. The voice-tims announcements originated by the firing party in the Enya Island bunker wore received end rebroalicast on the USF administrative net from minus 3 hours to the simulated shot time, These anncumenents were rebroadcast over ships! public addrees systens to insure that all participants ani observers were prepared for the detonation, RENSHANts and COITISS! hosing devices were tested, The Eninetok-EsTe3 MUX efrcult was unsatisfactory due to inoporative trenseitters at Enivetok, end the ESTES—Enyu aiphony cirait was ectiveted dete due to defective crystala, Aircraft comuniostions proved satia- factorye GTQ 7.1 desired to conmiuct further rests of the ciphsny end tine aignals operations, and they were satisfactorily comleted on 17-18 Februsry. 12. , On 20 February 1954, before the rehearsal of BRAVO, CTG 723 had shifted his flag from Parry Islend to BAKO the conmaleations shift was accomplished sencothly, and the task group communications activities on ferry were reduced to ons operator manning the task greup CH Common, maintained primsrily to facilitate contact with CTa 7.3 Liaison Officer et Perry Island, 22. Communications during the BRAVO rehearsal, comiucted on 22-23 February, were generally satisfactory. All shipboard cirait terminale were manned continuously for 48 hours wille teste were conéucted. A heavy load was placed in the task group Gi common dus to 233 AFWLHO ; q4