morse code alphabet 11
https://pdkuaj0lnb.clearhavendigest.com/posts/mastering-morse-code-to-text-a-practical-guide-for-beginners-and-enthusiasts
The Morse code alphabet is a method of encoding letters and numbers using sequences of dots and dashes, or short and long signals. Developed by Samuel Morse in the 1830s, it was originally used with telegraph systems to send messages over long distances. Each character has a unique pattern, like '... --- ...' for SOS, and while less common today, it's still used by some amateur radio operators and in emergencies.