Task Group. Both Arcw ad Joint systems, and SIGTOT on- ad off-line facilitieswere held, to link CTG 7.4 through the tape relay center on Eniwetok, with tlw Flagship, Fort Shafter, Hickam Field, Department of the Air Force, and other ZI imtallations. Blocks of call signs and call words were obtained and assignments made. A review of the communicationsproblems encountered in Operation CROSSROADS revealed that the numerous radio facilities in use aboami the Flagship resulted in a high degree of interferencedue to the inherent proximity of the transmitting and receiving antennas. It , was therefore decided, for this operation, to instell all high power radio terminals ashore on Eniwetok re~ Island. A stamiard joint teletype center was planned with radio teletype facilities to connect from there to Kwajalein ad to Hawdi. In Hawdi, facilities were already existing for connection into the Amy Command ad Administrative Net (ACAN) for communicationto the United States, Guam ad other parts of the world. The Eniwetok center was to be linked to the Flsgship by means of AN/TRC-l equipawmt with provision for both tel~phone and teletype service through CF-1 and CF-2 carrier equipment. This link was to be backed up by a low frequency radio teletype circuit in case of ftiure of the AN/!HZC-lequigmsnt. Sttiby equipmnt was to be provided on the Flagahip for the voice radio circuit to Kwajalein. In tiew of the smple radio ship, the U.S.S. W. facilities already installed on the Flag- HCICINIEY,it was not necessary to install additional facilities other than the AN/TRC-l eq@pmnt 117 Seotion XI in onier to