DE NNN0ASA 051
R 031700Z JUN 2008
FM CHNAVMARCORMARS WILLIAMSBURG VA
TO ALNAVMARCORMARS
INFO CHIEF ARMY MARS FT HUACHUCA AZ
CHIEF AIR FORCE MARS SCOTT AFB IL
BT
UNCLAS
SUBJ: CHNAVMARCORMARS BCST 07-08 - SIX-CHARACTER CALLS FOR WL2K
1. NAVY-MARINE CORPS MARS HAS BEEN ASSIGNED THE CALL SIGN BLOCK
NNA0AA THROUGH NNZ9ZZ FOR OUR USE.
2. ALL NAVMARCORMARS STATIONS CURRENTLY HAVE THE SAME FIRST FOUR 
CHARACTERS - 'NNN0' AND THEN A UNIQUE THREE CHARACTER DESIGNATION - 
THE SAME AS YOUR 'ABBREVIATED' CALL SIGN. WE HAVE PREVIOUSLY 
SHORTENED OUR SEVEN-CHARACTER CALL SIGNS BY DELETING THE FIRST 'N' 
IN ORDER TO USE VHF PACKET AX.25 PROTOCOL. THIS SCHEME WILL NOT WORK 
WITH THE WINLINK 2000 (WL2K) PACKET RMS SYSTEM WHICH RECOGNIZES ONLY 
MARS AND FEDERAL CALL SIGNS BEGINNING WITH THREE LETTERS AND A 
NUMERAL. THE NEW CALL SIGN BLOCK WE RECEIVED MEETS THIS REQUIREMENT. 
3. EFFECTIVE IMMEDIATELY, NAVY-MARINE CORPS STATIONS OPERATING ON
WL2K PACKET WILL USE CALL SIGNS CONSTRUCTED AS FOLLOWS:
  FIRST TWO CHARACTERS 'NN'
  THIRD CHARACTER - THE FIRST CHARACTER OF YOUR ABBREVIATED CALL SIGN
  FOURTH CHARACTER - THE NUMERAL DENOTING YOUR NAVMARCORMARS REGION
  LAST TWO CHARACTERS- THE LAST TWO CHARACTERS OF YOUR ABBREVIATED
CALL SIGN.
    EXAMPLE: NNN0ASA VA WOULD BECOME NNA3SA
4. FOR ALL OTHER OPERATIONS (VOICE, DIGITAL AND WL2K PACTOR), 
CONTINUE TO USE THE FULL SEVEN-CHARACTER, 'NNN0' CALL SIGN.
5. MARS: TOGETHER WE CAN ACHIEVE ANYTHING.
BT
NNNN