WORD BEFORE ~ - = The word of the message to which I have reference is that which precedes. WORDS TWICE = — a Communications is difficult. for each code group) twice. Transmit (ting) each phrase This proword may be used as an order, request or as information. WRONG # «=~ - . = Your last transmission was incorrect. sion is e e. The correct ver— Generals (1) To utilize circuit time more efficiently all messages or their substance should be written down prior to trans- mission. Those messages which must be delivered by the receiving operator to another person or which are pre= ceded by the proword "MESSAGE FOLLOWS" shall be written down. (2) Transmissions by radiotelephone shall be as short and (3) Transmission over radiotelephone should be clear with natural emphasis on eech word except the prescribed pro- concise as practicable consistent with clarity. of standard phraseology enhances brevity. The use 1 muncliation of numerals, and should be spoken in natural phrases, not word by word. (4) f. . To avoid interfering with other traffic, an operator shall listen in to make certain that a circuit is clear before making any transmissions thereon, Establishing Commmications: Before conducting regular traffic over radiotelephone circuits, it may be necessary to make contact with the other station (s) involved to ascertain that commmications is possible. g- Signal Strength and Readability: (2) 4 station is understood to have good signal strength and readability unless otherwise notified. Strength of sig-. nals and readability will not be exchanged unless one station cannot clearly hear another station. (2) A station that wishes to inform another of his signal strength and readability will de so by means of a short and concise repert of actual reception, such as "Weak, but readable," "Strong, but disturted,Loud and clear," etc, Reports such as "Five by five," "Four by four," - eto., will not be used to indicate strength and quality of reception. A station desiring to mew how his trans~ .mission is being received will transmit "How do you hear me?", "What is my readability?", "Report my signals," etc. 8. AUTHENTICATION: Authentication for voice or telegraphic transmissions, if re~ quired, will be in compliance with COI 30-3. The Communications Officer, Test Support Unit, will issue authentication tables as necessary. Tee TASK GROUP 7.4 OPRS ORDER NO. 1-54 ANNEX E, APNDX 3 E3=7 ee ee