a normal call-up. The calling station then says the word “BEADWINDOW” followed by the number of the EEFI the violator disclosed. The only authorized reply to the BEADWINDOW message is “ROGER-OUT.” This method allows the reported unit to take immediate action to correct the insecure  practice.   In  this  particular  situation,  if  the  call sign of the net control is “Control” and the call sign of the violator is USS Frances Scott Key, Control’s report would  be: The EEFI list should be posted in clear sight of the operator at all nonsecure voice positions for quick reference.  You should remember that procedural violations are not security violations; therefore, they don’t fall in the BEADWINDOW category. IMPORTANCE OF RADIOTELEPHONE VOICE PROCEDURES Poor voice communications can create confusion, reduce  reliability  and  speed,  and  nullify  security precautions. Poor procedures can ultimately have an adverse effect on the mission of a ship. A  commanding  officer,  regardless  of  the  mission  of the   ship,   has   only   one   real-time   means   of communicating with his commander and other units of a force—radiotelephone. Your ship maybe required to guard (monitor) 10 or more voice circuits, each having a specific  purpose  and  specific  procedures.   Few  of  these circuits are operated from communications spaces except on small ships, such as submarines or destroyers. On larger ships, the circuits are handled from the bridge and the combat information center (CIC). As an operator, you are responsible for providing reliable transmitter and receiver services to these remote  operating  positions.   This  entails  establishing communications on a net or circuit before making that net or circuit available to the remote operators. If you do not know the various nets that are guarded by your ship and   the   purpose   of   these   nets,   the   overall communications of the ship can be degraded. This could impede the progress of the entire operation. Modern,  high-speed  naval  operations  make  the elimination  of  confused  R/T  operations  an  absolute necessity.  For example, a hunter-killer force searching for an enemy submarine is not permitted the luxury of a 5- or 10-minute delay in executing a screening signal. An  unnecessary  delay  such  as  this  could  defeat  the purpose (speed) of the officer in tactical command (OTC) when using R/T. A 1-minute delay by an aircraft carrier pilot in executing a vectoring signal because he did not understand the message could easily result in the pilot’s death. During shakedown operations, a submarine could risk collision with its escort vessel during emergency surfacing procedures if voice communications are not clearly   understood. When  possible,  you  must  use  only  standard phraseology,  authorized  prowords,  and  brevity  code words.  Standard procedures enhance reliability and clarity.    Moreover,  variations  from  standard  circuit procedures  provide  an  ideal  situation  for  enemy imitative   deception. BASIC  RADIOTELEPHONE  MESSAGE FORMAT Radiotelephone uses a 16-line message format (table 2-4) that is comparable to formats in teleprinter communications.  Radiotelephone  messages  also  have the same three military message forms: plaindress, abbreviated plaindress, and codress. By far, the most common message form in R/T traffic  is  the  abbreviated  plaindress.  In  fact,  the abbreviated  plaindress  message  is  sometimes  so abbreviated that it closely resembles the basic message format. The three major message parts-heading, text, and ending—are there, however. Each of these major parts is reduced to components and elements. All format lines do not necessarily appear in every message. When a line is used, it must be placed in the message   in   the   order   shown   in   table   2-4.   An abbreviated plaindress message may omit any or all of the  following:  precedence,  date,  date-time  group (DTG), and/or group count. A codress message is one in which the entire address is encrypted within the text. The  heading  of  a  codress  message  contains  only information  necessary  to  enable  communications personnel  to  handle  it  properly. Notice that prowords, not prosigns, are used in voice communications.  Because prowords are spoken, it is important that you, as the operator, be completely familiar with them.  Refer to table 2-2 for a list of many of  the  commonly  used  prowords,  their  explanations, and their equivalent prosigns. Throughout this chapter, prowords are shown in all capital letters. 2-10