Telephone Communication at TR (Trinity Event)

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BEST AVAILABLE COPY TELEPHONE COITUNTCATION AT TR There will be tvto telephone exchanges or central stations at TS. Headquarters exchange will be located in the radio shack at c-aap ojca will serve to connect the '‘ollc-rine: buildings: ma&iag the change, and date) - Two truri-f lines will connect the Headquarters Exchange with Baker (South 10,000) where a second switchboard /.ill be located. This exchange <iil be known as Baker Exchange and -will serve the various field points as follows: Able (North 10,‘100), a phone in both shelters; Tero, at base and top of tower; Baker (South 10,000), a phone in both shelters; Baker - Timing Desk; Baker - Control Desk. All telephone instruments will be firmly attached to the individual stations and will be designated as a field service phone with an appropriate sign to indicate the call or ring of the particular station. Under no circumstances are the telephone instruments to be removed or altered. Should any changes be necessary, corrmunicate with Sgt, Jopp in the iVire Service Office CALLING PROCEDURE BEST AVAILABLE COPY Because of the number of telephones Involved it is necessary in some instances to have a party line arrangement with several instruments on the same line. Since all instmeents v.lil be connected to a switchboard it will not be possible to ring another party on the same line without also raising the switchboard ooerator. The.’.‘.V-rs, all calls mde from °ny of the systems Phones BEST AVAILABLE COPY

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BEST AVAILABLE COPY repeated several times if .•jscessa.ry v;ith an interval of about 10 eacojda between ::ech ring. The operator -fill tnen call your party for you in aceorcl-snco svtth standard will notify tha operator t j;.t your ■:eaisetL'.v my be broirsn. tellurs tu ring aft will indicate a "busy lino” to ortor rnd result in poor servics for tha a general nll-purposa cor&mJcv.titra systsia., Kindly refraia fron tapping into these linos as experience , proven that tho conductor strands have been cut which weakened the jaechanicni vxi'or.^th as wall as Increased the electrical resistance of the lines to ci •.< point :,:ere the lines ultisiately became useless-, As there are now many inora .ciios of line involved it ’..ill beco.r.3 increasingly difficult .to maintain them ind your ccoperation in keeping line faults to a iur.i..u.a will be greatly appreciated, Field telephone eats for general portable use will be available to ..he various groups. These, however, are limited and they should be returned to tha Tire Service Office when not in actual use. BEST AVAILABLE COPY BEST AVAILABLE COPY