The following unattended transmitter operations are authorized:
Format specifier: Individual call-symbol 120 sent twice.
Address: 9 digit maritime mobile service identity of called station.
Category: Routine-symbol 100.
Self-identification: 9 digit ship station identity.
Message 1: Telecommand symbol 126 sent twice.
Message 2: Telecommand symbol 126 sent 6 times.
End of sequence: Symbol 127.
Error-check character: Check sum.
47 C.F.R. §80.179