Many think "SOS" stands for "save our souls" or "save our ship," but it actually doesn't stand for anything. SOS is a Morse Code distress signal. Morse Code is a system that uses dots, dashes and ...

Best known for its appearances in desert-island cartoons, maritime movies and earworms by ABBA and Rihanna, the word SOS has been used as a code for emergency distress signals since 1905. If you’re ...

As I mentioned in our post last week on signal methods, the humble whistle is a signal device that works day or night. As long as you have the breath to blow it, the whistle can attract attention in ...

It may be the ultimate SOS--Morse Code is in distress. The language of dots and dashes has been the lingua franca of amateur radio, a vibrant community of technology buffs and hobbyists who have ...