4 in Morse Code
MORSE CODE REFERENCE
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BRIEFING
In International Morse code the number 4 is ....-: 4 dits and 1 dah, 11 units long (about 660 ms at 20 WPM).
It sounds like "di-di-di-di-dah".
In MORSE HQ's Koch training, 4 is character 30 of 41.
Often confused with
How to remember it
Learn it by sound instead of counting dots and dashes. Say "di-di-di-di-dah" out loud, then listen to it at full speed.
Like the Koch method, hearing characters at your target speed (15-20 WPM) from day one makes it easier to speed up later.