Routine precedence. Transmission for relay, of course,
would be delayed until all higher precedence traffic is
The date-time group (DTG) indicates the
approximate time a message was readied for
transmission. Normally, the DTG is assigned by the
communications watch officer or signal officer. The
DTG in figure 3-2 indicates the message was ready for
transmission at about 1933 Greenwich mean time (is the
zone suffix) on the 6th day of March.
Because the DTG serves as a positive means of
identification, no DTG should be assigned by any
station to more than one outgoing message. If for some
reason you have to assign a DTG, be sure to inform
the communications center of the DTG you used.
Figure 3-2 has no message instruction element.
The use of operating signals and the prosign IX will
be discussed in chapter 4.
The address component of figure 3-2 is FM NQHS
TO OHWZ INFO XGHL XMT NFZV. This component
shows who originated the message, the addressee for
action, the addressee for information, and the exempt
addressee. Provision is also made to show which, if any,
addressees included in a collective call sign need not
receive the message. (A collective call sign represents
two or more ships, stations, or commands.)
The address component of the message is
determined by the drafter and originator. Communica-
tions personnel are authorized to convert the
plain-language addressees to call signs or address
groups when processing messages for transmission.
All four prosigns that can be included in the
address component appear in the example message.
The originator's sign, FM, means The originator of
this message is indicated by the designation
immediately following. The prosign for action
addressee, TO, means Addressees indicated by the
designation immediately following are addressed for
action. The information addressee sign, INFO,
followed by call signs, shows that the message is for
The exempted addressee sign, prosign XMT,
means that addressees following XMT are exempted
from the collective address. If a collective call is also
used, the prosign XMT must also appear in the call
element. It appears as the last element in the address
component, following the action and information
If the call element gives all the addressees, the
address component of a message may be omitted. In
the example message, if there were no information
addressees, the call would serve as the address. The
address component could then be omitted.
The prefix of a plaindress message contains
accounting symbols and the group count.
Accounting symbols are included in Navy messages
when a possibility exists that they may be transmitted
over commercial facilities. Instructions for the use of
accounting symbols are found in JANAP 128.
The group count of a message is the number of
groups in the text. In a message, GR followed by
numeral(s) means "This message contains the number
of groups indicated." In a message containing a text of
26 words, the group count is written GR26. If the
message were encrypted, the group count would indicate
the number of code groups in the text. The group count
normally appears in the message prefix, but in certain
cases may appear in the final instructions. When a
message is transmitted before the group count is
determined, the prosign GRNC may be used in lieu of
the group count. The actual group count will then be
transmitted in the final instructions and inserted in the
message prefix by the receiving operator.
Rules to follow when counting groups are the
Count groups in the text only.
Each sequence of characters uninterrupted by a
space is counted as one group.
Punctuation is not counted unless abbreviated or
Count every word and every continuous
combination of letters, figures, and/or symbols as one
Hyphenated words and hyphenated names, when
transmitted as one word, count as one group.
A numerical group count always must be used in
encrypted messages. The group count element may be
omitted in messages where the text consists of plain
The long-break prosign, BT, marks the separation
between the text and other parts of a message. It
immediately precedes and follows the text. In