SOS was developed from the general MISC@1 radio call `` SOE '' , with the NUMBER@1 dits of a `` S '' easier to hear in under noisy conditions than the one dit of an `` E '' .

SOS was developed from the general MISC@1 radio call `` SOE '' , with the NUMBER@1 dits of a `` S '' easier to hear in static than the one dit of an `` E '' .
