to AEC agencies throughout the United States.
Air Force traffic was routed
directly to Hickam AFB for further relay through AIRCOMNET channels,
The ‘bulk
of the Army and Navy traffic was routed directly to the Army relay station at
Hawaii for further relay or transfer through ACAN or NTX channels.
Other radio-
teletype circuits linked ENIWETOK and BIKINI Atolls ami major task force ships.
Except for a small amount of special traffic authorized to be transmitted
directly to areas outside the PPG all task force traffic was routed to and
from one joint relay crypto center on ENIWETOK.
available for all principal circuits.
Back-up communications were
Approved submarine and landline buoy
cable systems linked islands at ENIWETOK and BIKINI and major ships at anchor
in both atolls.
Telephone and radiotelephone systems were interconnected to
provide maximum flexibility.
A radiotelephone facility was available from
the PPG to HAWAII with interconnection to the Hawaiian Telephone Co. to
provide service to the United States.
@.
Peak traffic through the Joint Relay Center at ENIWETOK exceeded
65,000 messages per month, and the number of calls through the ENIWETOK dial
exchange exceeded 14,000 per day.
overseas test.
This far exceeded the totals of any previous
To further tax the capabilities of the task force outgoing
message systems, PRIORITY and higher traffic ran 50% and more on many of the
radicteletype links.
f.
Communications required by the newsmen for press coverage of the
LACROSSE and CHEROKEE events were provided by CNO.
Press commmication
facilities in the PPG were located aboard the USS MP MCKINLEY and included
radioteletype, radiotelephone and facsimile.
JTF SEVEN communications parti-
cipation was limited to coordination of frequencies, enforcement of necessary
radio silence periods and insuring that the position of the MI MCKINLEY did
not interfere with operational task force circuits,
g-
CaNoo
To assist CJTF SEVEN with his PPG commnications security responsi-
bilities, the Army Security Agency provided a four~officer and thirty-eight
man monitoring detachment,
The unit monitored and analyzed over 100,000 radio,
teletype, telephone, CW and flashing light transmissions,
Actual security
violations were neplipible.
h,
The integrated REDWING commmications system in the PPG met all opera-
tional demands.
31