Experiment · Signals · Sound
Morse message.
Type something and hear it as Morse code, or as a data signal at the speed GPS satellites talk. Then send it to a friend as a hidden message.
Send
Someone sent you a hidden message. Press play and try to read it, then reveal it.
Key it yourself
Hold the key for a dash, tap it for a dot. Pause to finish a letter. Space bar works too.
Cheat sheet
Morse is still on air. Aircraft navigation beacons spell their names in Morse, and GPS satellites send their navigation message at just 50 bits per second, so a full almanac of every satellite takes 12.5 minutes to arrive.