ANNEX F TO TASK GROUP 7.5 OPERATION PLAN
Communications and Electronics Plan
1.
General -
a.
Purpose - The purpose of this plan is to set forth communications
facilities and instructions to meet the needs of TG 7.5 personnel
in connection with Castle.
Wherever pertinent this plan will set
forth those facilities which are availeble and will be furnished
by CTG
7.5 to CJTF SEVEN and other Task Groups to meet their re-
spective communications requirements.
b.
Basis for Plan - This plan is based upon tentative requirements
Cc.
Effective Period - This plan is effective for TG 7.5 personnel in
a.
Time of Origin - 24 hour clock time followed by Mike (local Eniwetok time) designator eliminating the use of A.M. and P.M. will be
of Task Group 7.5 as they are known at this time.
the forward area prior to and during Castle.
used on all local comminications circuits in the forward area
-
where message date time group is used.
When originating messages
to outside Eniwetok and Bikini Atolls, GCT (World or Zebra) time
will be used.
2.
Mission - The mission of the Asst. c/s, E-5, Task Group 7.5 is to:
a.
Ascertain communications requirements for Task Group 7.5 and either arrange for these requirements to be fulfilled by TG 7.5 or
submit requirements to CJTF SEVEN for implementation by others.
dD.
c.
pecial Rereview
a.
e,
Supervise installation, operation, and maintenance of the telephone systems on all islands other than Eniwetok Island.
° Supervise installation and maintenance of the interisland tele-~phone and signal cable systems, including the assignments of telephone cable pairs to meet JTF SEVEN and TG 7.1 requirements.
Supervise installation, operation, and maintenance of TG 7.5 Boat
Pool radio system and TG 7.5 Construction and Administrative radio
systems.
Supervise installation and maintenance of the point to point radio
system servicing airstrips on all islands except Eniwetok and Bikini Airport.
f.
Supervise operation and maintenance of the ZI terminal of the Los
Alamos~-Eniwetok RATT circuit.
&.
Provide cryptographic system for use of CTG 7.5 and CTG 7.1 for the
exchange of messages classified TOP SECRET RESTRICTED DATA.
F-1
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