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QPERAPTONS ORDER’ NO, B54 oe ES
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TASK GROUP .7.4, PROVISIONAL tee
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APO 187, c/o Postmaster >
San Francisco, California::
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° - ‘GENERAL CONCEPT OF COMMENTOATIONS OPERATIONS:
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One permanent. relay«-crypto center at ENIMETOK will be3ane Ted.
stalled, operated and maintained by Task Group 7,2,
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Tributary stations -
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serviced by this relay center will include Heedquarters Task Group 7.4, °./
which will be responsible for distribution of messages to its subordinate .
units,
For handling of teletype traffic, up to and including SECRET,.-
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between major forward and rear echelon task force elements, the following °
radio teletype cireuits willbe operatad "ON-LINE" using SIGIOT with -%
SAMSON (synchronous mixer); te es
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say IIETOK-O8NTY uP): ‘One full duplex radio tetotreo—
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ENIVBTOK-KWATATETIGE One full duplexmultiplox chanel”?
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LF
ETOK-BIKINI: -“One ‘auauplex ‘adlo teletype ¢cham”
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Tepe.
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A) ENIVETOK-LOS’ ALAMOS: One full duplex ratio
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teletype ate
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BTOK-AGC (USS ESTES): Onefull“ay
eye stiles
‘| shannel. (Provided bya4 Poh)a- a
De “gratia“not capable ofDoing.handled byin
‘neans of ‘oneline
facilities will be enciphered off-line prior to transmission,. All TOP”
SECRET and RESTRICTED DATA traffic will -bé enciphered off-line, This: is
necessary to meet AEC requirements and, in additim, terminal. conmmica—
tions personnel are ‘not in all instances.TOP SECRET or "QUEBEC"|cleared. . ~
c. On ENIWETOK‘and BIKINT’ ATOLLS, wire telephone facilities
cleared for conversations up to-and including SECRET will be made, avails-
able .to the Task Group by the Joint ~Task Forces, 20 ows.
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d. Voice radio facilities ‘will ‘be available.on a
1 closelycor
~ “trolled basis between the.. following, pointe: vo
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4 OPRS ORDER NO. 3-5.
” ANNEX :"3"
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