Signalman 1 & C - Historic Naval Ships Association

Example:M15B transmits:Alfa One Six Two—THIS IS Mike One FiveBravo—OVERAl62 answers:Mike One Five Bravo—THIS IS Alfa One SixTwo—OVERM15B having nothing for A162, transmits:Alfa One Six Two—THIS IS Mike One FiveBravo—OUTEstablishing a NetFull call signs are used when opening a net,reopening a net, or reporting into a previouslyestablished net. Proper control by the NCS andadherence to operating rules by all stations within thenet enable the net to begin and maintain an exchangeof traffic with minimum delay. The NCS is alsoresponsible for maintaining security on its net.Appropriate security guidance will be furnished by theNCS to all stations prior to establishing a net.Example:When ready to establish a net, the NCS transmits:Yankee One Six Charlie—THIS IS Mike One FiveBravo—OVEREach subordinate station then answers the call inalphabetical order:Mike One Five Bravo—THIS IS Alfa One SixTwo—OVERMike One Five Bravo—THIS IS Bravo One NineEight—OVERMike One Five Bravo—THIS IS Delta Two ThreeFour—OVEROnce the net has been established, it will normallywork with abbreviated procedures and call signs. TheNCS will, however, order the net to work full or withabbreviated procedures or call signs, as required bythe conditions.MESSAGESAlthough R/T uses three messageforms—plaindress, abbreviated plaindress, andcodress—the form most used is the abbreviatedplaindress. However, the three parts are still used(heading, text, ending).The procedures for use of the above mentionedmessages are the same as for the use of the visualmessage.PlaindressA plaindress message is one in which theoriginator and addressee designators are indicatedexternally of the text. It contains all components of thebasic message format (unless the call serves as theaddress) and must always include the precedence anddate-time group. The group count will always beincluded when the accounting symbol is used.Abbreviated PlaindressOperational requirements for speed and handlingmay require abbreviations of plaindress headings. Insuch cases, any or all of the following may be omitted:CodressPrecedenceDateDate-time groupGroupcountA codress message is one in which the entireaddress is encrypted within the text. The headingcontains only information necessary to enablecommunications personnel to handle it properly.Service MessagesService and abbreviated service messages aremessages used between communications personneland pertain to any phase of traffic handling,communication facilities, or circuit conditions. Seechapter 3 for more information concerning servicemessages.GENERAL OPERATING PROCEDURESThe procedures for conducting radio checks,repetitions, cancellations, corrections, andverifications are contained in ACP 125; take time tostudy these procedures.4-21