VI with the 1 7.4 air rehearsal in the Bikini area, Air oontrol ond ship-shore circuits were activated, in addition to all normal unier~ way cireaits. The voice-¢ims announcements originated by the firing party in the Enya Ielend banker wore received ani rebroaicast on the Ud administrative net from minus 3 hours to tho aimulated shot time, These anncumenents vere rebroadcast over chips! public address systems to insure that all participants ani observers were prepared for the detonation, HERSHAKts and CURTISS’ hoaing devices were tested, The Eniwetok-ESTs3 MIX circuit was unsatisfactory due to Inoporative transsitters at Eniwetok, end the ESTES-myu ciphony clrarit was activeted late dus to defective crystals, factory. Aircraft comauniostions proved satis- CTG 7.1 desired to coniuot further rests of the ciphony ond tise aignals operations, and they were satisfactorily completed on 17-18 February. 12. , a 20 February 1954, before the rehearsal of BRAVO, CTG 7.3 had shifted hie flag from Ferry Island to BAIROED the eonsuafcations shift was accomplished sncothly, end the task group communications activities ca rarry were reduced to ons operator manning the task group CH Common, maintained primarily to facilitate contact with CcTG 7.3 Liaison Officer et Perry Island. 12, Commnications during the BRAVO rehearsal, coaiucted on 22-23 February, were generally satisfectory. All shipboard cirmit terminals were manned continuously for 48 hours wiile tests were conducted, <A heavy load was placed in the task group Ci common dus to 233 AFWLHO