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Morse Alphabet

The Letter U in Morse Code

U is ··−: 2 short dis and one long dah, di-di-dah. It lasts 7 units.

··−di-di-dah
U drawn to time: 7 units, then a 3-unit gap before the next letter.
Speed

Facts about U

Code
··− · di-di-dah
Elements
3 — 2 dots, one dash
Length
7 units + 3 before the next letter
Time
0.42 s at 20 WPM · 1.05 s at 8 WPM
Tree
E → I → U · below it: F
Frequency
2.73% of English letters, 13th of 262
Koch order
3rd sign of the course
Spelling
Uniform
Same signal
У in Russian Morse · ウ in Wabun

§ 1Don’t confuse U with

  • Uthis letterdi-di-dah
  • Ione element shorterdi-dit
  • Aone element shorterdi-dah
  • Slast element differsdi-di-dit
  • Welement 2 differsdi-dah-dah
  • Kfirst element differsdah-di-dah
  • Vone element longerdi-di-di-dah
  • Fone element longerdi-di-dah-dit
  • Xone element longerdah-di-di-dah
  • Gmirror: every di and dah swappeddah-dah-dit
  • Dreversed: the same elements back to frontdah-di-dit

Blue marks the elements that differ from U.

§ 2How to remember U

un-der-WAY (··−) — U is D (−··) reversed, so let the two quick dits lead into the dah.

§ 3Words with U

§ 4Questions about U

What is U in Morse code?
U is two dots and a dash (··−). Add a dash to I (··) and you have U; put one more dot in front and you have V (···−).
What does U mean in Morse chat?
Operators often send U for you, as in TU for thank you or R U for are you. Short forms like these keep a contact moving, and U is quick to key.
Can U stand for 2 in Morse code?
In cut numbers U may replace the figure 2, whose full form is ··−−−. Expect it only where a number belongs, such as a serial number in a contest exchange.