LEER
URITY IN
APPENDIX 2 _
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ANNEX
OPERATIONS ORDER NO, 2-52
CommntToaTTONS SHOURITE
. The following material on communications security, based. in general
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on information contained in ACP.125.(A), 1s published here for the guid-
ance of all personnel and for compliance by those personnel using radiotelephone circuits.
1.
The basid. radiotelephone piocedure prosaribed herein shall be
used for radiotelephone communications.
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2. Classified information wild
nat be discussed over heh froquensy _
radiotelephone circuits.
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Be. Classified information will.‘not be:‘transmitted overr very
y high
frequendy.radiotelephone: circuits. ©
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Operational Brevity Codes should ‘be| promulgated ‘tor transmission
-of lesairied operational information.
Such codes should -be submitted te
this Headquarters for approval prior to being placed in Use.
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Communications Security
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a. In the interest of ‘socurity, transmission by radiotelephone - .
will be as ‘short and concise as possible consistent with clearness. Since
personnel other than trained operators frequently operate radiotelephone
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equipment, all personnel must be cautioned that transmissions by -radiotel--° :
ephone are ‘subject: to. enemy interceptionand therefore have no security. .
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+ De "Adherence ‘to prescribed procedure ‘is mandatory. Unauthorized
departures from or. variations in prescribed procedure invariably create ~
confusion, reduce reliability and speed, tend to nullify security precautions, and are prohibited. If the procedure prescribed herein does not.
_ cover a specific operating requirement, nesorting to initiative and com
mon sense should’ suffice.
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'* The following basic rules are essential to transmission se~.
cnt and * shall be strictly enforced on all military vadiotelephone cir-4
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QQ) No transmi sion ‘shall. be made which has not beenau" a
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thorized y proper authority.
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(2) “The following Hractices ere specifically forbtaaén:
. (a) Violation of ‘radio eilance, m aa x
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(b):‘Tnoffietal conversation betweenoperators,
fe)Excessive tuning and testing. Lee
‘ (a) ‘Transmitting the operator's personal sign «ormae
: (e) Tnauthoriseduse of plata Janguage. 3 -