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Morse Alphabet

The Letter C in Morse Code

C is −·−·: 2 short dis and 2 long dahs, dah-di-dah-dit. It lasts 11 units.

−·−·dah-di-dah-dit
C drawn to time: 11 units, then a 3-unit gap before the next letter.
Speed

Facts about C

Code
−·−· · dah-di-dah-dit
Elements
4 — 2 dots, 2 dashes
Length
11 units + 3 before the next letter
Time
0.66 s at 20 WPM · 1.65 s at 8 WPM
Tree
T → N → K → C · a leaf: no sign below it
Frequency
3.34% of English letters, 12th of 262
Koch order
36th sign of the course
Spelling
Charlie
Same signal
Ц in Russian Morse · Θ in Greek Morse · ニ in Wabun

§ 1Don’t confuse C with

  • Cthis letterdah-di-dah-dit
  • Rone element shorterdi-dah-dit
  • Done element shorterdah-di-dit
  • Kone element shorterdah-di-dah
  • Gone element shorterdah-dah-dit
  • Ffirst element differsdi-di-dah-dit
  • Belement 3 differsdah-di-di-dit
  • Ylast element differsdah-di-dah-dah
  • Ämirror: every di and dah swappeddi-dah-di-dah

Blue marks the elements that differ from C.

§ 2How to remember C

CAT-a-PULT-ed (−·−·) — C is N (−·) said twice with no gap, while K (−·−) stops one dit short of it.

§ 3Words with C

§ 4Questions about C

How do you remember C in Morse code?
Hear it as two equal halves, dah-di and dah-dit, the same small phrase twice. Once you know N, C costs almost nothing to learn, and its even, swinging beat is one of the easiest on the chart to pick out.
What does CQ mean in Morse code?
CQ is a general call to all stations, sent −·−· −−·− and usually repeated a few times. An operator who wants a contact sends CQ, then DE and their own call sign, and waits for anyone to answer.
Does C mean yes in Morse code?
Yes. In the ITU list of abbreviations (ITU-R M.1172) a lone C says the previous group is affirmative, and radio amateurs use it the same way in short exchanges.
Was C different in American Morse?
It was. The old American landline code sent C as two dots, a short space and one more dot (·· ·). The international code has no spaced letters, which is why C took its dah-dit form.