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ANSWERING AND RECEIPTING - 14243_73
NOTE - 14243_75

Signalman 1 & C - Aviation theories and other practices
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When required, a full answer, consisting of the call sign of the calling station and the prosign DE followed by the call sign of the station answering, may be used. In the flashing light procedure when giving an immediate receipt to a message in response to the prosign K, use the prosign R singly without the ending sign K or AR. RELAYING INSTRUCTIONS When relaying responsibilities are automatic, relaying instructions need not be inserted in the transmission instructions. The prosign T is to be used when signals/messages are passed through a relay when the relaying responsibilities are not automatic and the originator requires no report of delivery. The address component is mandatory. When a message is received with the prosign T standing alone in the procedure component of the heading, it means “Station called transmit this message to all addressees.” Examples: Suppose that C60 transmits a message to R55, with instructions for R55 to transmit the message to F31; in that case, the heading would be as follows: R55 DE C6O T R 231210Z MAR 96 FM C87 TO R55 F31 BT Prosign T followed by a call sign in the procedure component means “Station called transmit this message to station(s) whose call follows T.” Assume that C60 transmits a message to R55 with instructions for R55 to transmit the message to one of the addressees—in this instance, B62: R55 DE C60 T B62 R 231210Z MAR 96 FM C60 TO R55 F31 B62 GR4 BT UNCLAS RETURN HOME SOON. BT K Prosign T both preceded and followed by call signs means “The station indicated before T is to transmit this message to the station(s) indicated immediately following T.” Station C60, transmitting a message to R55 and F31, instructs R55 to transmit the message to B62: F31 R55 DE C6O R55 T B62 R 231210Z MAR 96 FM C60 TO B62 F31 R55 GR4 BT UNCLAS RETLURN HOME SOON. BT K When transmission is accomplished, all addressees (B62, F31, R55) will have received the message. The prosign L is to be used when the originator requires relaying ships to report through the chain of command when the message has been delivered. The prosign L is not to be used in the transmission instructions of executive method messages. The prosign L must, however, be passed in to the originator by relaying ships when the text of the executive method message has reached the last ship in the chain of visual responsibility. It is not to be passed in for the executive signal nor for messages where no response procedure is used. The prosign L must be passed to the originator by a ship that relays an emergency alarm signal to the OTC. NOTE Visual call signs must NOT be used in the transmission instructions or address of mes- sages to be transmitted or relayed by other than visual means. SPECIAL PROCEDURES The signals listed are signals used in special circumstances. ACP 129 covers procedures for using these special signals. Calling an unknown station No-response procedure Double-flash procedure Exchanging identities with the senior officer present afloat (SOPA) Alarm procedure for enemy reporting Special visual prosign OL Synchronizing time CORRECTIONS AND REPETITIONS Errors or omissions noted by the transmitting operator are to be corrected as follows: During transmission, the operator should transmit the error prosign, repeat the last word, group, prosign, or operating signal correctly transmitted before the error, followed by the correct word, group, prosign, or operating signal, and continue on. When transmission is completed but before a receipt is obtained, the 4-6







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