[GreenKeys] Fwd: (GREENKEYS) RE: ZCZC / NNNN

[Richard M. MC Clung]

Sorry for the previous message. It shot out of the chute before I was
ready to send it. Here is the book answer to the ZCZC / NNNN quandry.

If you want to study it further you may go here:

<http://www.dtic.mil/jcs/j6/cceb/acps/Acp127g.pdf>

RICH  WA6KNW


ACP 127(G) - Communications Instructions, Tape Relay Procedures
 
PAGE 1-4
 
PARAGRAPH 114. END-OF-MESSAGE INDICATOR AND END-OF-MESSAGE FUNCTIONS.

            A. END-OF-MESSAGE (EOM) - NNNN. AN INDICATOR USED TO     
               TERMINATE TRANSMISSION IIN TAPE RELAY SYSTEMS. 
  
            B. END-OF-MESSAGE FUNCTION IN TAPE RELAY PROCEDURE,   
               THE LETTER AND KEY FUNCTIONS, INCLUDING THE EOM,
               WHICH COMPRISE THE LAST FORMAT LINE, I.E.,
               (2CR)  (8LF)  NNNN  (121LTRS).

PAGE 1-6

PARAGRAPH 128. START-OF-MESSAGE INDICATOR (SOM) - ZCZC

               AN INDICATOR EMPLOYED TO ACTIVATE AUTOMATIC MESSAGE 
               SWITCHING EQUIPMENT.  IT IS REQUIRED ON MESSAGES PASSING

               THROUGH AUTOMATIC SYSTEMS TO INDICATE START-OF-MESSAGE.