HEADQUARTERS, Joint Task Force SEVEN
Washington 25, DeCe
Annex L to CJTF SEVEN Operation Order No. 1-53
COMMUNICATIONS
General Concept of Communications Operations
ae One permanent relay-crypto center at ENIWETOK to be installed,
operated and maintained by TG 7.2. Tributary stations serviced by
this relay center will include: Hq, JIF SEVEN, TG 7.2, TG 7-3, USS
ESTES and other ships as required (i.e., CURTISS, CVE, LSD) and TG
7ehe
Headquarters, JTF SEVEN communications center will provide for
TG 701, TG 705 and TG 7.3 (ashore).
be
Crypto center, ENIWETOK, will be crypto guard for all above men-
tioned tributary stations except TG 7.3 (afloat).
For handling of
teletype traffic, up to and including SECRET, between major forward
and rear echelon task force elements the following radio teletype cir-
cuits will be operated "ON-LINE", using SIGTOT with SAMSON (synchro-
nous mixer):
:
OPERATIONAL DATE FOR
CIRCUIT
TYPE
ENIWETOK - OAHU (UHP)
SIGTOT-SAMSON
OPERATION (TENTATIVE)
"Full Dux (1)
September 1953
ENIWETOK ~- BIKINI
Full Dux (1)
June 1953
ENIWETOK — KWAJALEIN
Fall Dux (2)
October 1953
ENIWETOK - LOS ALAMOS
Full Dux (1)
August 1953
ENIWETOK ~ AGC (USS ESTES)
Full Dux (1)
January 1954
Traffic not capable of being handled by means of on-line facilities
will be enciphered off-line prior to transmission.
All TOP SECRET
and RESTRICTED DATA traffic will be enciphered off-line. This is
necessary to meet AEC requirements and, in addition, terminal communications personnel are not in all instances TOP SECRET or "Q" clearedo
Co
Telecon facilities will be available at Headquarters, JIF SEVEN
(PARRY ISLAND).
Requests for this service will be submitted in
accordance with COI item 29-1.
de Wire telephone facilities cleared for conversations up to and
including SECRET will be available at:
(1) ENIWETOK ISLAND (400 line dial exchange) with connecting serv-
ice to other islands.
(2) BIKINI ATOLL (connecting service between necessary islands).
(3) PARRY ISLAND (220 line manual with connecting service to
other islands).
L-1
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