In 1906, the "SOS" distress signal was adopted at the International Radio Telegraphic Convention in Berlin.

1906年，在柏林举行的国际无线电通信大会上采用了SOS遇难信号。

youdao

The three fishermen's vessel didn't have an Emergency Position Indicating Radio Beacon, which transmits a distress signal anywhere in the world through a satellite system, the navy said.

CNN: SHARE THIS

In 1906, SOS was established as an international distress signal at the Berlin Radio Conference.

CNN: Friday,