J in Morse Code
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A single dot gives way to three dashes: · — — — . That's one of the more lopsided rhythms in the alphabet — a quick opening beat followed by a long, sustained run with nothing to interrupt it.
Related Codes
- The digit 1 (dot-dash-dash-dash-dash) is J with one extra dash on the end; the digit 2 (dot-dot-dash-dash-dash) is J with one extra dot on the front. Both sit a single symbol away.
- W (dot-dash-dash) is J with the final dash removed.
- P (dot-dash-dash-dot) shares J's first three symbols but closes on a dot instead of a third dash.
Because J is dash-heavy after a single short opening dot, it takes noticeably longer to send than most letters its size in the alphabet, and a rushed operator can occasionally shave that final dash short enough to sound like W instead.
Frequently Asked Questions
Which digits sit just one symbol away from J's code?
Two of them, in opposite directions. Add a dash to the end of J's dot-dash-dash-dash and you have the digit 1; add a dot to the front instead and you have the digit 2. Under a weak signal, a clipped opening or a run-on ending can turn J into either one.
What is J most closely related to in the full Morse character set?
The digit 1, which is J's exact code plus one additional trailing dash.