Morse-coding Messages
| Field | Telecommunication |
| Went Obsolete | 1999, when it was replaced by the Global Maritime Distress Safety System. |
| Made Obsolete By | Modern technology that allowed transmission of data without error, and with much lower operator skill. |
| Knowledge Assumed | Fluency with the code, listening to the signals, and the feel for it. |
| When useful | Used extensively for emergency communications over amateur radio (ham radio). |
Will always be used where simple, reliable, low-power radio communications are needed.
Morse-code is still a standard method of sending a distress signal - SOS
Now that Morse skills are optional, the Code is increasingly popular on the Amateur Bands simply for relaxation and enjoyment.