communication instructions radio telegraph procedure

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UNCLASSIFIED ACP124 (D) EEEEEEEE Error (317) F Do not answer (205, 207) FM Originators designator follows (217) G Repeat back (205, 206) GR (numeral) Group count (219) GRNC Groups not counted (219) __ HM (three times) Emergency Silence (331) II Separative sign (201) ___ IMI Repeat (316, 324) INFO Information addressee (s) designator(s) follow (217) ___ INT Interrogative (335) __ IX Execute to follow (602) __ IX (5 second dash) Executive signal (602) J Verify with originator and repeat (326) K Invitation to transmit (222) NR Number (204) O Immediate (213, 305) P Priority (213, 305) __ PT Call sign follows (302c) R Receipt (318) R Routine (213, 305) T Transmit to (205, 208) TO Action addressee (s) designator(s) follow (217) WA Word after (323) WB Word before (323) XMT Exempted addressee(s) designator(s) follow (202, 217) Z Flash (213, 305) UNCLASSIFIED 1-7
UNCLASSIFIED ACP124 (D) 112. GENERAL SECTION II – MESSAGES AND BASIC MESSAGE FORMAT a. Message handled by radiotelegraph will be prepared for transmission in either PLAINDRESS, ABBREVIATED PLAINDRESS or CODRESS form except when commercial or ICAO procedure is authorised. b. Each message prepared in either PLAINDRESS, ABBREVIATED PLAINDRESS or CODRESS will have three PARTS: (1) Heading (2) Text (3) Ending c. Each message PART has certain COMPONENTS which are broken down into ELEMENTS and CONTENTS. (1) All message PARTS and a majority of the COMPONENTS and ELEMENTS have a standard arrangement or sequential order of appearance. (2) The BASIC MESSAGE FORMAT is the basis for the procedure contained in this publication. (3) In Table 1-1, format lines 2, 3, 4, 14, 15 and 16 identify the procedural portion of the basic message format as designed for radiotelegraph operation. Format lines 5 through 13 are the non-changeable components of the basic message format. All format lines do not necessarily appear in every message; however, when used they will be in the order shown. 113. DIAGRAM In Table 1-1, it should be noted that every element is indicated in the order of appearance in the message, but the contents of the various elements are not necessarily indicated as they will appear. The use of routing indicators in format lines 4, 6, 7 and 8 is limited to the extent authorized by paragraph 901b. RADIOTELEGRAPH MESSAGE FORMAT TABLE 1-1 PARTS COMPONENTS ELEMENTS FORMAT LINE H E A D I N G Cont'd PROCEDURE Cont'd Called Station(s) UNCLASSIFIED 1-8 1 Not used. CONTENTS 2 Station(s) called, prosign XMT and exempted call signs. Calling Station 3 Prosign DE and call sign of station calling: Serial number (Transmission Indetification). Prosign NR followed by a number or a combination of letters and numbers.
Page 1 and 2: UNCLASSIFIED ACP124 (D) COMMUNICATI
Page 3 and 4: UNCLASSIFIED ACP 124(D) THE COMBINE
Page 5 and 6: UNCLASSIFIED ACP124 (D) TABLE OF CO
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UNCLASSIFIED ACP124 (D) 501. DESCRI
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UNCLASSIFIED ACP124 (D) EXAMPLE 1:
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UNCLASSIFIED ACP124 (D) Response: C
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UNCLASSIFIED ACP124 (D) 701. INTROD
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UNCLASSIFIED ACP124 (D) EXAMPLE 1:
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UNCLASSIFIED ACP124 (D) 706. EXAMPL
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UNCLASSIFIED ACP124 (D) UNCLASSIFIE
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UNCLASSIFIED ACP124 (D) 901. PURPOS
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UNCLASSIFIED ACP124 (D) 2308Z A mes
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UNCLASSIFIED ACP124 (D) 0010Z Repet
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UNCLASSIFIED ACP124 (D) (2) Specifi
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UNCLASSIFIED ACP124 (D) 1006. PROCE
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UNCLASSIFIED ACP124 (D) On Fixed Se
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UNCLASSIFIED ACP124 (D) to repeat b
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