WORD BEFORE - ~ ~Tho word of the message to which I have reference is that which precedes, WORDS TWICE ~ ~ -Communications is difficult, (or each codo group) twice. Trensmit (ting) each phrase This proword may be used as en order, request or as information. WRONGe ~ ee = = Your lest transmission was incorrect, sion is . ‘ 6, The correct ver- Gonerals (1) To utdlize circuit time more efficiently all messages or their substance should be written down prior to transmission. 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 concise as practicable consistent with clarity, The use of standard phraseology enhances brevity. (3) (4) f, Transmission over radiotelephone should be clear with natural emphasis on each word except the prescribed pronunciation of numerals, and should be spoken in natural phrases, not word by word. To avoid interfering with other traffic, an operator shall listen in to make certain that a circuit is clear before making any transmissions thereon. Egtablishing Commmications: Before conducting regular traffic over radiotelephone circuits, it may be necessary to make contact with the other station (s) involved to ascertain that communications is possible, @- Signal Stren Rea 3 (1) A station is understood to have good signal strength and readability unless otherwise notified. Strength of signals 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 do so by moans of a short and concise report of actual reception, such as "Weak", but readable," "Strong, but distorted," "Loud and clear" etc. Reports such as "Five by five," “Four by four" etc., will not be used to indicate strength and quality of reception. A station desiring to know how his trans~ mission is being reosived will transmit "How do you hear. ne?t, "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. Tho Commnications Officer >) Test Support Unit, will issue authentication tables as necessary. TASK GROUP 7.4 OPRS ORDER NO, 2-54 ANNEX "E", APNDX 3 E3-7