KSM is the commercial station at the Maritime Radio Historical Society, Pt. Reyes, CA (at the old RCA/MCI maritime and point to point site). In cooperation with the Comm Center group on Yahoo!, which is comprised of former or retired military communicators, it broadcast several RTTY/RATT messages in standard military form.
Here's one of the most interesting ones. All net discipline is exactly as received. The "?" character was used in the message to replace ones that aren't in ITA2. Any format changes, such as stripping leading blanks, were done by Blogger, not me:
VV HNA033
RR RUWMKSM
DE RUMLNHA 0033 1410200
ZNR UUUUU
R 200131Z MAY 08
FM COMMCENTER AT YAHOOGROUPS.COM //NNN7DXB//
TO KSM MARINE RADIO SAN FRANCISCO CA //KSM BCST//
BT
UNCLAS
SUBJ: ACP-127 FORMATTED MESSAGE
REF: ACP-127 TAPE RELAY INSTRUCTIONS ( )
1. THIS IS AN EXAMPLE OF A MILITARY MESSAGE FORMATTED IN
THE ACP-127 TELETYPE TAPE RELAY FORMAT THAT WAS IN USE
IN THE US MILITARY PRIOR TO THE MID-1970S. DURING THE 1970S,
THE MILITARY TELETYPE TAPE RELAY SYSTEM, ALSO KNOWN AS
THE ?TORN TAPE RELAY SYSTEM? WAS SLOWLY REPLACED BY THE NEWER
AND FASTER AUTOMATIC DIGITIAL NETWORK, OR ?AUTODIN?.
2. AUTODIN WAS A HIGH-SPEED, HIGH CAPACITY, COMPUTER CONTROLLED
?SUPER TELETYPE? SYSTEM THAT WAS ALSO CAPABLE OF HANDLING
DATA TRAFFIC IN IBM PUNCHED CARD FORM (HOLLERITH CODE), AND
MAGNETIC MEDIA. IT RELIED ON SERVOS AND TAPE DRIVES, AND LATER,
WAS UPGRADED WITH WHAT WE NOW REFER TO AS HARD DRIVES
THAT WERE ABOUT THE SIZE OF WASHING MACHINES. SOME OF
THE MAIN BRAINS IN THE AUTODIN SYSTEM WERE RCA SPECTRE 70
PAGE 2 RUMLNHA0033 UNCLAS
MAIN FRAME COMPUTERS. MOST ARMY AUTODIN FACILITIES WERE
MAINTAINED BY EITHER PHILCO-FORD OR WESTERN UNION UNDER
DOD CONTRACT. AUTODIN ITSELF WAS FINALLY REPLACED ON
SEPTEMBER 30, 2003 BY A NEW MEDIUM CALLED THE DEFENSE
MESSAGING SYSTEM, OR ?DMS?. DMS OFFERS MORE CAPACITY THAN
DID AUTODIN. IT PERMITS ATTACHMENTS, GRAPHICS, MAPS, MAP
OVERLAYS, LETTERS AND NON-MESSAGE CORRESPONDENCE, FILES,
AND EMAIL TRAFFIC TO BE TRANSMITTED IN A SINGLE SECURE SYSTEM
THAT IS WORLDWIDE IN SCOPE AND OPERATION.
3. ACP-127 PROCEDURES HOWEVER, DIDN"T GO AWAY. MOST US
MILITARY TACTICAL CIRCUITS STILL USED ACP-127 FORMATS UNTIL
THE LATE 1980S, UNTIL THE AUTODIN SYSTEM WAS FINALLY
INTEGRATED IN THE FIELD UNITS. NATO UNITS CONTINUED TO USE
ACP-127 FORMATS, SINCE NONE OF THEIR EQUIPMENTS OR SYSTEMS
WERE COMPATIBLE WITH THE US COMPUTERIZED FORMAT. SYSTEM
COMPATIBILITY IN THOSE DAYS WAS CALLED ?INTEROPERABILITY?.
EVEN TODAY, ACP-127 FORMATS CAN STILL BE FOUND IN SOME
NATO COUNTRIES WHERE INTEROPERABILITY ISSUES CONTINUE
TO PERSIST.
4. TRANSMITTED AS AN INFORMATIONAL SERVICE BY THE
PAGE 3 RUMLNHA0033 UNCLAS
COMMCENTER AT YAHOOGROUPS.COM GROUP. ALL MATERIAL
APPEARING HEREIN IS IN THE PUBLIC DOMAIN.
5. SERVICE AND SUPPORT TO THE TROOPS FROM ONE OF THE
US ARMY"S FINEST COMMUNICATIONS OPERATIONS CHIEFS OF
THE 1ST INFANTRY DIVISION (FORWARD), FORMERLY LOCATED
A COOKE BARRACKS, GOEPPINGEN, NEAR STUTTGART, GERMANY.
BT
0033
NNNN