cease transmissions immediately. Silence must be
FLASH, FLASH, FLASH, POLK, THIS IS Key,
. . . .
You should be aware that the break-in procedure is
not to be used during the transmission of a tactical
message except to report an enemy contact. The
precedence of the message spoken three times means to
maintained until the station breaking in has passed the
message. In the following example, assume that
Tecumseh is transmitting a message to Kamehameha on
a free net and Key has a FLASH message for Polk. Key
breaks in with the following transmission:
THIS IS Polk, ROGER, OVER.
Key then proceeds with the FLASH traffic and obtains a
proper ROGER, thus freeing the net for further
transmissions. After hearing ROGER, Kamehameha
recontacts Tecumseh for the remainder of the traffic that
was being sent before the break-in:
Tecumseh, THIS IS Kamehameha, ALL AFTER
On a directed net, the station wishing to break in would
first obtain permission from net control. For example,
referring to figure 2-1, assume that Vallejo is
transmitting a message to Kamehameha and Polk has
FLASH traffic for Tecumseh. Polk notifies Key (net
FLASH For Tecumseh, OVER.
Key then answers:
Polk, THIS IS Key, Send Your FLASH, OVER.
Upon hearing the authorization, Tecumseh transmits:
THIS IS Tecumseh, OVER.
Tecumseh, THIS IS Polk, FLASH (sends
The preceding transmission would conclude after
Polk had received a proper ROGER for the FLASH
traffic. The two stations that were broken (Vallejo and
Kamehameha) would reestablish communications
using proper R/T procedures.
Emergency silence may be imposed on an R/T net
only by competent authority. If an authentication
system is in effect, a station must always authenticate a
Imposes emergency silence;
Lifts emergency silence; and
Calls stations during periods of emergency
silence. When emergency silence is imposed, no
receipt or answer for such transmissions is
To impose emergency silence, the NECOS speaks
the proword SILENCE three times. For example, refer
to figure 2-1 and assume that Key (net control) was
authorized to impose emergency silence. Key would
Poseidon, THIS IS Key, SILENCE, SILENCE,
SILENCE, TIME One Four Four Zero Zulu, OUT.
To impose emergency silence on a particular
frequency but not on all frequencies used in the net, Key
would use the proword SILENCE (spoken three times),
followed by a frequency or the frequency designator to
be silenced. SILENCE (spoken three times), followed
immediately on all nets. All transmissions end with the
To lift emergency silence, Key would send the
Poseidon, THIS IS Key, SILENCE LIFTED,
TIME One Five One Zero Zulu, OUT.
EXECUTIVE METHOD FOR
by the words all nets,means to cease transmissions
FLASH, FLASH, FLASH, Key, THIS IS Polk.
maneuvers. Abbreviated plaindress format is normally
The Executive Method for R/T is used to execute a
tactical message at a given instant. This method is used
to ensure that two or more units make simultaneous
used for Executive Method messages. These messages
never have a time group included in the message
ending. There are two variations of the Executive
Method: delayed and immediate.
DELAYED EXECUTIVE METHOD
A tactical message sent by the Delayed Executive
Method must carry the warning proword EXECUTIVE
TO FOLLOW in the message instructions immediately
preceding the text. The executive signal is sent later in
the form of standbyEXECUTE, the latter word
being the instant of execution. For example, referring to