Utility Monitoring Central

MIL-188-110A Modem Signatures

Stations on...
HF 

Resources
Search UMC
ALE Networks
HF Modems
Digital Signals
Databases    
Hardware
Software
Latest Logbook  
WWW Links  
Contributors  
Inspiration
 
This page documents a number of lead-in sequences (when viewed in ITA2 mode) useful for identification (especially in the absence of any ALE) of stations using the MIL-STD-188-110A 2400bd high-speed modem.

 


Czech Diplomatic Service (variable speed frames, ASCII text & binary files)

Signature: BCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}


US Coast Guard (always 600bd frames with Short Interleave, KG84 encrypted)

Signature: UUUUUUUyœ»V


US Coast Guard (always 1200bd frames with Short Interleave, KG84 encrypted)

Signature: UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUyœ»V


Mexican Navy (variable speed frames, plain text and on-line encrypted)

Signature: ####0123456789


Mexican Navy (variable speed frames, plain text and on-line encrypted)

Signature: ^^^^^^^^^^^^^^^^^^^^^^^^^^^


ITU X.400 Message Handling Protocol (eg Rockwell-Collins MediaWare Messaging System, and others)
Swedish Diplomatic Service, Venezuelan Army, Swiss Military (variable speed frames, on-line encrypted)

Signature: .q


Romanian Diplomatic Service (variable speed frames, on-line encrypted)

Signature 1: xxxxxp\
Signature 2: xxxxxq\


Unidentified User (on-line encrypted)

Signature: \q\q\q\q\q\q\q\


Venezuelan Army (variable speed frames, on-line encrypted)

Signature: TEQTEQTEQTEQ

 

 


Last Modified: 29th December 2003

Content copyright 2004 Mike Chace-Ortiz.  No commercial use of these pages and their content allowed unless by prior permission of the author