Morse code translates alphanumeric characters into standardized sequences of dots and dashes, or dits and dahs. Originally developed for landline telegraphy, it remains in use for continuous wave radio transmissions and emergency signaling. Operators appreciate it because the narrow bandwidth required for its unmodulated carrier wave allows signals to punch through heavy static and interference.
Heard on the job
The beacon is transmitting its identifier in Morse code on 144.28 megahertz.
Insider tip
Experienced radio operators do not count dots and dashes; they learn to recognize the rhythmic sound pattern of each entire letter.
Also heard as
- CW