Symbol speed and transmission modes are selected automatically at the start of the decoding without further intention. IF-bandwidth of the receiver must be at least 3 KHz wide to enable undistorted decoding.
A MIL188-110 ser signal together with an ALE signal
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.
| user | Czech Diplomatic Service (variable speed frames, ASCII text & binary files) |
| header | BCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|} |
| user | US Coast Guard
(always 600bd frames with Short Interleave, KG84 encrypted) |
| header | UUUUUUUyœ»V |
| user | Unidentified US Organization
(always 1200bd frames with Short Interleave, KG84 encrypted) |
| header | UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUyœ»V |
| user | Mexican Navy (variable speed frames, plain text and on-line encrypted) |
| header | ####0123456789 |
| user | Swedish Diplomatic Service, Venezuelan Army, Swiss Military
(on-line encrypted) |
| header | .q |
| user | Romanian Diplomatic Service (variable speed frames, on-line encrypted) |
| header | xxxxxp\ and xxxxxq\ |