Q in Morse Code (--.-): Sound, Timing and Radio Use

What is Q in Morse code?

The Morse code for Q is --.- : dash, dash, dot, dash, and a one-unit gap of silence separating each pair of signals. That pattern comes from International Morse Code, now set out in ITU-R M.1677-1, so the Q you key in Ohio is read the same way by a listener in Brazil or Japan.

Printed charts draw the Q Morse code pattern in different marks: the RSGB Morse code sheet uses ▬ ▬ ● ▬, typeset pages use − − · −, and keyboards give --.- (Q). Morse has no capital or small letters, so q and Q share one pattern.

How to send Q in Morse code

Send Q as three long signals with one short signal tucked in before the last, keeping every pause inside the letter equal and short. The letter is only complete when the fourth signal, a full dash, has been sent.

1. By sound: key, hum or whistle it as "dah, dah, di, dah," holding each dah for three beats and clipping the di to one.
2. By light: with a flashlight, make two long blinks, one quick blink and a final long blink, then leave it dark for a three-unit pause ahead of the following letter.
3. By tap: knuckle taps cannot be held, so spacing carries the pattern: use a knock-and-hold (press your knuckle down) for each dash, or a double knock for a dash, keeping all gaps inside Q equal. A button or touchscreen you can hold works better.
4. In writing: type --.- as one block, then separate letters with a space and words with a slash. QUIZ is written --.- ..- .. --.. with its letter spaces.

Operators say "di" for a dot that is followed by another signal and "dit" for one that ends a letter, which is why Q is spoken dah-dah-di-dah and not dah-dah-dit-dah.

Morse code for Q timing at different speeds

Q takes 13 units: three dashes of 3 units each, a single 1-unit dot, and three 1-unit gaps. Morse speed is quoted in WPM, measured against the 50-unit word PARIS. Divide 1200 by the WPM figure to get one unit in milliseconds; a faster speed shrinks every part of Q in proportion.

At 20 WPM Q takes 0.78 seconds while E takes 0.06, so a single Q fills the time of thirteen Es. Learners who use Farnsworth spacing keep the 20 WPM letter shape and simply stretch the silence between letters, so Q still sounds like one quick figure rather than four separate beeps.

The gap after Q counts too. Leave less than three units before the next letter and the two run together into a pattern that is either a different character or no character at all.

How to remember Q (--.-)

A common rhyme for Q is "GOD SAVE the QUEEN": two heavy words, one light one, one heavy word, in the same long-long-short-long beat as the letter. The player above uses "QUEEN-QUEEN-and-KING" for the same shape.

A second aid is the dash ladder: a single dash is T, a pair is M, a dot after the pair gives G, and a dash after that gives Q. If you already know G (--.), Q is simply G that refuses to end on the dot.

Use either cue only until the sound sticks. Above 10 WPM nobody has time to count four signals; the target is to hear Q as one shape, a long swing with a short catch before the final pull.

Letters and numbers confused with Q

Y is the letter most often confused with Q, because -.-- is Q played backward. G and Z cause the other errors, since both share Q's opening two dashes and only change at the end.

Most of these mix-ups come down to the fourth signal. Hear dah-dah-di and then wait: a dash completes Q, silence means G, another dot means Z.

Drill Q against Y and G first, then against Z. X is worth one session too, because X and Q both begin and end with a dash.

Common mistakes when sending Q

• Dropping the last dash. The receiver writes down G. Finish the letter before lifting off the key.
• A clipped final dash. If the last signal shrinks to a dot, Q becomes Z (--..).
• A pause after the second dash. The listener hears M then A (-- .-), two letters instead of one.
• A pause before the last dash. Now it is G then T (--. -).
• A pause after the first dash. The letter splits into T then K (- -.-).
• Uneven dashes. All three dashes need the same length; a long first dash and a short third one make Q hard to read at speed.

Q on the air: CQ, QTH, QSL and QRZ

In amateur radio Q is far more common than its share of English text suggests, because it opens two kinds of signal that CW operators send all the time. The first is CQ, the general call to any station listening; the second is the family of three-letter Q-signals that each stand for a whole sentence.

CQ came from UK landline telegraphy, where an 1871 reference already lists it as the call for all stations; the Marconi Company took it into wireless in 1904. The Q-signals began around 1909 as a British list for ships and coast stations, and the 1912 London Radiotelegraph Convention adopted 45 of them. Today the block QRA to QUZ is set out by the ITU for all radio services.

The Q itself has no official meaning, though people often remember it as "query" or "question." A Q-signal followed by a question mark is a question, and without one it is a statement. The Morse code shorthand page lists every Q-signal with audio, including CQ, QTH and QSL.

Why Q has four signals

Q got a long pattern because it is one of the rarest letters in English. In the frequency table most references use, Q appears in about 0.12% of letters, against 12.7% for E and 9.1% for T; only Z is rarer. The code gives its shortest marks to the busiest letters, so a letter that seldom appears can carry four signals without slowing a message down.

Alfred Vail is credited with measuring those frequencies by counting the movable type held by a Morristown, New Jersey newspaper. The --.- you hear today, though, is the European form, standardized at Paris in 1865. In the American Morse used on US railroad telegraph lines, Q was ..-., which is the International pattern for F, so old American charts can trip up a modern reader.

Words with Q in Morse code

In English, Q is nearly always followed by U, so most Q words open with --.- ..- and the U's dot-dot-dash has to sit clear of Q's closing dash. Each space in the Morse column stands for the 3-unit pause between letters.

QUIZ is a useful drill because it puts Q and Z, two letters that differ only in the final signal,, in one short word. IRAQ shows Q at the end of a word, where nothing follows to hide a short final dash.

To hear a Q word of your own, enter it in the Morse code translator and pick a speed to match your level.

Practice Q on Morse Beacon

The fastest way to check your own Q is to send it and let the decoder read it back. Send the letter as a tone (key, buzzer or the tapper's sound) to the Morse audio decoder and read what comes back: G or Z means your final dash is missing or too short. Then run the practice set for Q to test it by ear once the rhyme is gone.

Keep the player handy while you work. At 8 WPM in Slow mode each dash is long enough to time against your own, and the 14 WPM default is a fair pace for a slow on-air contact. Work the neighbors as well: P (.--.) and R (.-.) sit on either side of Q, and the full alphabet chart puts Q beside G, Y and Z in one view.