PART If, CHAPTERS 7 and 8 CHAPTER 8 COMMUNICATIONS — ELECTRONICS GRGANIZATION 8.2 It was apparent during Operation RED- WING that the TG 7.5 organization to support the communications mission was in- effective because the communications functions were divided within the Contractor’s organization. This led to confusion, misinterpretation of instructions, and duplication of effort. Prior to - the build-up for HARDTACK, Phase I, a Communications Division was established within H&N’s Eniwetok organization which resulted in the successful accomplishment of the communications mission. The scope of communications work for HARDTACK was several times that of REDWING but was performed with only a 22 increase in Communications personnel. 4 reduction in AEC communicationsstaff was also realized by shifting a larger portion of the com- munications program supervision to the Con- tractor. The organizational status of H&N’s Communications Division at Jobsite will be con- tinued, and it is planned that the cable installa- tion and splicing functions will be transferred to the Communications Division to provide improved coordination of User requirements and professional supervision of the cable program. DESCRIPTION OF FACILITIES 8.3 TG 7.5 provided telephone service on all islands, except Site Fred. At the con- clusion of REDWING, it was apparent the Site Elmer telephone facility was inadequate, and engineering was initiated to replace the existing manual-type system before Operation HARD- TACK. On } February 1958, a 700-line dial system with three-atrendant cabinets was placed in service with dia! tie-lines to the TG 7.2- , ing the grade of service. 8.5 Three 70-line PABX dial systems were procured to extend dial service to three Eniwetok Atoll camps; however, installations were made only at Sites Yvonne and Janet. The , third PABX was placed in stock after the Site Ursula camp was cancelled and is available to equip a third camp at Eniwetok Atoll or it may be utilized in Bikini Atoll after the conversion of that atoll to dial service. The Sites Yvonne and Janet evchanges were connected to the Elmer exchange by dial tie-lines; thus, all sub- scribers within Eniwetok Atoll could be reached by direct dialing. 8.6 During the planning for Operation HARDTACK, TG 7.1 could not be assured that the off-island PABX exchanges would withstand the blast effects; therefore, parallel services were provided from the Elmer exchange to a numberof off-island locations by direct lines. The PABX off-island installations withstood the blast effects, however, and functioned properly throughout the shot series. 8.7 The telephone service for Bikini Atoll was provided on a manual basis. It was found that the increased requirements due to dividing the two laboratory activities, placing UCRLshots at Bikini Atoll and LASL shots at Eniwetok Atoll, overcrowded the system, rendering it incapable of handling the traffic load on Site Nan. Manual exchanges were installed and operated on Sites Nan, Oboe, and How. TG 7.5 is currently planning to replace the Bikini Atoll manual system with a dial system before the next full-scale test operation. 8.8 TG 7.5 funded the reinstallation of a 35-line dial system and radio equipment aboard the USNS AINSWORTHat a cost of approximately $65,000. This communications equipment had been previouslyinstalled for RED- Page 56 a» ~ 8.4 of 582 were installed, and it is felt that this numberof lines could be reduced without affect- ” the services provided and documents the required service improvements. A detailed technical report is included in the Contractar’s COMPLETION REPORT, OPERATION HARDTACK, PHASE I. further expansion is indicated, unless the popution figures greatly exceed those of HARDTACK. Of the 686 lines available, a maximum . in accordance with EPG SOP Manual, Chapter 0270. This report summarizes briefly furnished unattended dial system on Site Fred. This system provided adequate service and no er TG 7.5 provided communications services am 8.1 | GENERAL ©) the Johnston Island facilities, a representative to LASL and designated as Classification Officer for TG 71 throughout the Johnston Island phase. Inasmuch as other Task Groups operating at Johnston Island did not have resident classification representatives,these groups were serviced as required. nn authority. Subsequent to the establishment of of the ALO Classification Division was loaned 9 with attempts to resolve classification problems arising from the unexpected rapid establishment of Johnston Island facilities. ALO Classification Division afforded the Contractor classification advice and assistance within the limits of its or rT eR ew he O & yer fF F CONEFIDEN HALT ST .