[Oremem] DIGITAL STUFF

[Joe & Jeanne Johnston]

DE AAR0PY NR 50
R 101710Z JUNE 2006
FM DIGITAL COORDINATOR/ AAR0PY OR
TO OREGON ARMY MARS MEMBERS
BT
SUBJ: MORE DIGITAL STUFF
1.  DIGITAL THIS WEEK WAS WITH POOR PROPAGATION FOR THE PACTOR NET.  LAST 
WEEKS MT63 NET HAD A NAVY MEMBER CHECKING IN NNN0FHA.  THAT WAS RANDY FROM 
WASHINGTON STATE TESTING OUT HIS EQUIPMENT.  THIS MORNINGS MT63 HAD SIX 
MEMBERS, TWO FROM FOSSIL OREGON AAR0PH AND AAR0PF WHO WAS RELAYED IN VIA 
MGB.  ALSO CHECKING IN WERE AAR0FJ AAR0LQ AAR0JY AND MYSELF AS NCS.  ONE 
MEMBER COMMENTED THAT HE COULDN'T HEAR THE SIGNAL BECAUSE OF LOCAL NOISE BUT 
STILL COPIED MOST OF THE MT63.
2.  CAM BULLETIN 27-06 CONCERNING GF-06 WAS RELAYED TO THE NET UNDER "DO NOT 
ANSWER".   I'VE NOTICED ON NAVY NETS ONE PERSON WILL BRING MT63 BULLETINS TO 
THEIR NETS AND THEN THE NAVY NECOS WILL ASK FOR SOMEONE  TO ROGER FOR THE 
MESSAGE.  THEN THERE IS A CALL IF ANYONE NEEDS THE MESSAGE READ IN VOICE 
(USUALLY NO ONE NEEDS IT READ).  THERE IS NO MENTION IN THE DIGITAL TRAINING 
GUIDE ABOUT HANDLING NET BULLETINS.   I NEED SOME IDEAS AND DIRECTION FROM 
EXPERIENCED OLD TIMERS.
3.  HERE IS TODAYS TRAINING TEXT:

TRAINING TODAY IS FROM THE DIGITAL OPERATIONS AND TRAINING GUIDE DATED 
SEPTEMBER 2005 CHAPTER 3 MIXED MODED NETS.  WE WENT THROUGH MOVING TRAFFIC 
USING A FEC MODE.  (PACTOR AND AMTOR CAN BE EITHER ARQ OR FEC MODE.) 
HOWEVER, MT63 USES ONLY FEC.   THE PROCEDURES FOR THIS ARE ON PAGES 11 AND 
12 UNDER SUB-PARAGRAPH d.     TODAY'S TRAINING IS IN THE CONTEXT OF FEC MODE 
ONLY.

THE COMMAND AND CONTROL FOR FEC MODE (INCLUDING THE ROGER OF THE MESSAGE) IS 
ALL DONE IN VOICE.  I SHOULD HAVE STATED THAT THESE EXAMPLES ARE WHAT SHOULD 
TAKE PLACE ON A VOICE MIXED MODE NET.   IT COULD BE PRACTICED HERE BUT THIS 
IS PRIMARILY A TRAINING NET IN DIGITAL MODE.

TRAINING TODAY IS FROM SUB PARAGRAPH e. TITLED,   REQUESTING FILLS WHEN 
USING FEC MODE.

FILLS SHOULD BE REQUESTED BY VOICE ON A MIXED MODE NET AND SENT BY VOICE IF 
ONLY ONE OR TWO GROUPS ARE NEEDED.  IT IS A JUDGEMENT CALL IF MORE IS 
MISSING SINCE IT IS FASTER AND EASIER TO RESEND
THE ENTIRE MESSAGE IN SOME CASES.

HERE IS AN EXAMPLE OF FILLS TAKEN PARTLY FROM PAGE 13.

Beginning in voice.

 THIS IS AAR0PY SAY AGAIN ALL BEFORE FIRST BREAK, OVER

The sending station replies:

 THIS IS AAA0OR RETRANSMISSION FOLLOWS, WAIT

The sending station resends either all of the message or just
the header that was requested using FEC mode BUT IT IS IMPORTANT
TO END WHATEVER AMOUNT OF TEXT IS BEING SENT WITH THE PROSIGN K

The receiving station upon seeing the K then responds in voice:

 THIS IS AAR0PY ROGER NUMBER 603 OUT.

NOTE:  SINCE THE ROGER IS BY VOICE, NET CONTROL IS FULLY AWARE THE TRAFFIC 
IS COMPLETED.  IT IS NOT NECESSARY FOR THE NCS TO EVEN BE COPYING MT63 TO 
MAKE USE OF DIGITAL MEANS TO PASS THE TRAFFIC.  AND IT IS NOT NECESSARY TO 
HAVE THE TRAFFIC PASSED ON AN ALTERNATE FREQUENCY.

OLD TIMERS WILL TELL US THAT THIS IS THE WAY IT USED TO BE DONE.  SO IT IS 
NOTHING NEW AND MUCH MORE EFFICIENT WHEN WE HAVE THE CAPABILITY TO HANDLE 
TRAFFIC THIS WAY.  AS ONE MEMBER SO APTLY PUT IT, THE BOTTOM LINE (FOR FEC 
MODE AT LEAST) IS THIS:    ONLY THE MESSAGE IS SENT DIGITALLY, THE COMMAND 
AND CONTROL, I.E. THE LISTING AND DIRECTING OF THE TRAFFIC, ROGERING AND 
REQUESTIING FILLS, ARE ALL DONE IN VOICE ON VOICE MIXED MODE NETS.
BT




NNNN
/EX