Easy way to remember
4 begins with 4 dots, then enough dashes to make five signals.
Number 5 of 10
4 in Morse code is dot dot dot dot dash (· · · · −), said di-di-di-di-dah
Ready when you are.
5 signals11 units0.66 s at 20 WPM
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di · di · di · di · dah
....-
Use di · di · di · di · dah as a memory cue. Send dot dot dot dot dash. Hold each dash for three dot lengths and leave one dot length between signals.
4 begins with 4 dots, then enough dashes to make five signals.
6 is dash dot dot dot dot (− · · · ·); 4 is dot dot dot dot dash (· · · · −). It reverses the signal order.
3 is dot dot dot dash dash (· · · − −); 4 is dot dot dot dot dash (· · · · −). Compare the order and number of signals.
| Word | Morse | Try it |
|---|---|---|
| 4 | ....- | Open in translator → |
| 40 | ....- ----- | Open in translator → |
| 41 | ....- .---- | Open in translator → |
4 is dot dot dot dot dash (· · · · −), said di-di-di-di-dah
It represents the number 4. Any extra meaning depends on the operating context or the surrounding message.
The pattern uses 11 units, including its internal gaps. At 20 WPM that is 0.66 seconds, before the next letter gap.
Compare 6 (− · · · ·) with 4 (· · · · −). Listen for the difference in signal order and length.
Checked against ITU-R M.1677-1 · Last reviewed · How we check our pages · Report it