rahvusvaheline kood teadete edastamiseks telegraafiga, koosneb tähtedele, numbritele ja kirjavahemärkidele vastavaist pikkade ja lühikeste signaalide kombinatsioonidest
two-condition telegraph code in which characters are represented by groups of dots and dashes, these groups being separated by spaces
The following signals, used or exhibited either together or separately, indicate distress and need of assistance: ... (d) a signal made by radiotelegraphy or by any other signalling method consisting of the group ... – – –... (SOS) in the Morse Code; ...