W91?F’r . facilities in the Los Angeles area, *i* ~re omrat~g on t~ aama or adjwoent frequencies. The results of the tests indioated that the planned ship-to-ship cmmmunioationsystems were satisfactory, but that minor changes would be neoessary to imprwe the operation of the VXF radio link telephone syetem. In the course of tests, one ship simulated the shore terminal of the VHF RTTY/Telephone link ayeternto provide ae near achual opratlng ocmditloneas possible. ‘Thecommnnioaticmtests at Terminal Island Naval Shipyard afforded shipboard communicatims personnel an opportunityto observe the operational peoulisriti6s of the equipent and thereby to oorreot, where possible, the difficultiesencountered in uzing equipments not speoifieallydesigned for shipboard operaticm. In same instanoes, it was neoessary to relooate antennae sy8tems and ohange frequencies in order to eliminate or reduce interferencebetween shipboard equipments. A test of the VHF RTTT 3-way oonferenoefacilitiesemploying the SSGTOT encryption system revealed At eonsiderable prautiee in oti- cult ptooedure and aynohronizationwas neoeasary. Since personnel operating this one-time-tapesyutem were not oaapletelyfamiliar with Amy prooedure and the handling of SIGTOT, instructionperiods and daily praotioe in the uee of tlm ayatem was institutedueing teat tapes. During the period of this report and until 29 February, tbre were dally arrivals of ●dditional persmnel previously ordered to 99 Seotion XI ‘1