§
.
fre
{ D}
,
;
ry
‘(2) Proper predederice
(3) Proper abbreviations
*
wat
E
ag, ‘Task Unit Commanders will bring to the attention ofall mes
, Bage drafters the contents of cor No, 10-7 "Freparetion ofMessages."
ae o
=
.
‘f. ACP 124(A)"Communication Instructions ~ Radio Telegraph
Procedure" will be complied withe
6.
j
~°
TELEPHONE USAGE:
a. In the Zone of Interior, no Classified information will be
discussed. over the telephone.
b. In the forward area wire telephone facilities cleared for
conversations up to and including SECRET will be available at:
;
.
ct
~
(1)
(2)
4
;
:
.
| +
:
oe
service to other . islands ‘of ENIWETOK ATOLL)
:
ma ATOLL {connecting service between necessary is—
lands
oo?
.
(3). PARRY ISLAND (270 Line manual vith connecting service -
-
.>
ENIWETOK ISLAND (400 line dial exchange with connecting
to other islands of ENIWETOK ATOLL).
, 7
(4). Telephone cables to buoys ( oviding wire telephone
+
service to designated ships
;
.
Ce -"VHF (FM) radio relay “equipmentwill be provided at key points
asa backeup for wire and cable telephone facilitiesy but commumications
will-be limited to unclassified conversations afd message traffic when such.
facilities are in use, TELEPHONE OPERATORS WILL INFORM TELEPHONE USERS IN
ALL CASES WHEN CALLS ARE ROUTED OVER VHF RADIO RELAY FACILITIES AND USERS
’ WILL BE INFORMED THAT CONVERSATIONS MUST BE CONFINED TO UNCLASSIFIED MAT~
4
TERS,
:
pot
.
“
tee
a
d, ACP 134(A) "Joint Communications Instructions Appendix IV -
Telephone Switchboard Operating Frocedure" wi be complied with.
>
.
aeee. TOP ‘SECRETand AEC RESTRICTED DATA material will not be transmitted in.Pete. Janguage over telephone circuits, either wire orradio re~
laye ape s |N
’
oe
ON RADIO. TELEPHONE PROCEDURE:
The following information on Commmi-
cations Security, based in general on material contained in ACP 125(A)
"Communications Instruction Radio Telephone Procedure," is published here for the guidance of all personnel and for compliance Wethose Personnel
usingHF, VHF, or UHF radiotelephone circuits.
.
.~
‘a.
Commmications Security: oe
rT
:
oy ~@)
e
we
_.
:
.
_
:
.
,
*
-
‘
.
“oF:
a Pan
~
*
In the interest of ‘security, tranemission by radiotelephone will be ae short and concise as possible consistent with clearness. Since personnel other than trained
operators frequently operate radiotelephone equipment,
ali personnel mst be cautioned that transmissions by
‘. radiotelephone are subject to eneny| Anterception and
an therefore have no security. a