G in Morse Code (--.): Sound, Timing and How to Send It

What is G in Morse code?

G in Morse code is --. : a dash, a second dash and a dot, separated by one-unit silences. It belongs to International Morse Code as defined in ITU-R M.1677-1, the single table used on amateur, maritime and aviation frequencies, so a G keyed in Texas is the same G heard in Tokyo.

Charts print the same letter in different symbols: some training sheets show ▬ ▬ ●, keyboards give --. and some pages use − − ·. The marks vary; the sound never does.

How to send G in Morse code

To send G, hold two long signals of equal length, leave a short gap after each, then give one short signal and stop. The whole letter stands or falls on the two dashes matching each other, because a second dash that comes out short turns the letter into D.

1. By sound: on a key, buzzer or your voice, give "dah, dah, dit." Each dah is held for three beats and the dit is cut off at one.
2. By light: two long blinks of a flashlight or lamp, one short blink, then the lamp stays dark for three units before the next letter.
3. By tap: knocks carry no duration, so the dashes become two knocks spaced well apart and the dot a quick third one; the pause after it is what ends the letter.
4. In writing: --. as three marks run together, then a space, then the next letter; words are divided by a slash. GO becomes --. --- and GOOD becomes --. --- --- -.. once the spaces go in.

Whichever method you pick, the Morse code for G does not change inside a word; what changes is the silence on either side of it.

Morse code for G timing at different speeds

G lasts 9 units: two 3-unit dashes, one 1-unit dot and the two 1-unit gaps between them. Speed is quoted in words per minute against the 50-unit reference word PARIS, so one unit equals 1200 ÷ WPM in milliseconds; raising the speed shortens every part of G by the same factor and the 3:1 dash-to-dot ratio never moves.

At 5 WPM each of the three signals is slow enough to count as it lands. At 20 WPM the whole letter is over in about half a second, two heavy beats and a tick, and the ear has to take it as one shape.

The 3-unit gap after the letter is part of the timing as well. Squeeze it and GE (--. .) collapses into Z (--..), one letter where two were sent.

How to remember G (--.)

The memory aid that lasts is the dash-first ladder: T is one dash, M is two, and G is M with a dot on the end. Add one more dot and you have Z (--..); swap that last dot for a dash and you have Q (--.-), so the whole group sits on one rung sequence.

A word cue with two long stressed syllables and one short one lands as dah-dah-dit. The player uses "GO-GO-on"; "Go, Go, Stop" does the same job. Say it while knocking the rhythm on a table, then play the letter and match your knocks to the tone.

A cue is scaffolding for the first few sessions, not a permanent habit. The goal is to recognize G as a heavy opening with a light ending, because anyone still counting two dashes falls behind once the speed passes 10 WPM.

Letters and numbers confused with G

The letters mistaken for G most often are M, which is G minus its dot, and D, where the second dash becomes a dot. At speed, Z and Q are the traps, because both begin with the same two dashes and differ only after the point where G would have stopped.

Everything hinges on what happens after the second dash. A short signal and then silence means G; nothing at all means M; a third dash means O; one or more extra dots mean Z or the number 7.

Drill G against M and Z first, since those differ only by what comes after the dashes. Then take D, because a rushed second dash is the fault senders make most. The W comparison matters for readers rather than senders: the same three signals in reverse order.

Common mistakes when sending G

• Stretching the dot. The ending must stay short. Let it run toward a dash and the receiver writes down O.
• A short second dash. When the second dash shrinks toward a dot, the G Morse code pattern turns into D (-..). Hold both dashes for the same count.
• Stopping early. Two dashes and no dot is M. Finish the letter before you relax.
• An extra dot. A bounced key or a nervous second tap after the dot sends Z.
• A gap inside the letter. Pause too long before the dot and the receiver hears M followed by E (-- .); pause after the first dash instead and it becomes T followed by N (- -.). Two letters either way, and neither is G.
• Counting instead of listening. Learners who count "one, two, dot" cannot keep up past 10 WPM. Hear the shape; the count takes care of itself.

G on the air: GA, GM, GN and the UK prefix

In amateur radio G is sent as an ordinary letter inside words, but it also opens a set of standard CW abbreviations that save airtime at the start and end of a contact. These are plain letters sent with normal letter gaps, not joined prosigns.

A typical opening line reads GM OM UR RST 599: good morning, old man, your signal report is 599. The full list of abbreviations, Q-codes and prosigns, each with audio, is on the Morse code shorthand page.

The same letter does a second job outside the code. G is the international callsign prefix allocated to the United Kingdom, so a station whose callsign starts with G is British, and UK civil aircraft registrations begin with G- as well. On voice radio the letter is spoken as "Golf" from the NATO phonetic alphabet, a spelling system for voice that shares no logic with the dots and dashes.

Why G is two dashes and a dot

G got a three-signal pattern because the original code gave the shortest signals to the letters that appear most often in English text. In the frequency table used for Morse training, G accounts for about 2.0% of letters, against 12.7% for E (a single dot) and 9.1% for T (a single dash); a letter at G's rate could carry a longer, slower pattern without dragging a whole message down.

The assignments go back to the 1830s telegraph work of Samuel Morse and Alfred Vail. Vail is credited with estimating letter frequency by counting the movable type a printer in Morristown, New Jersey kept for each letter.

That count is why the common letters are short and rare ones such as Q and Z, at about 0.1% each, run to four signals. G kept its --. through every later revision of the code.

Words with G

Words expose the gap after G, because the dot that closes the letter sits right against whatever comes next. Spaces in the table mark the 3-unit letter gap; a 7-unit word gap would be written as a slash.

GO is the first word to drill: the dot that ends G runs straight into the three dashes of O, and the pause between them is the only thing keeping --. --- from arriving as a single six-signal run that matches no character. EGG puts two Gs back to back, which trains the letter gap from the other side.

Type any other word into the Morse code translator to hear it at your own speed.

Practice G on Morse Beacon

The quickest check of your own G is to send it and let a machine read it. Key the letter into the [audio decoder] (or flash it at the camera reader on the Morse code light page)(/morse-code-audio-translator/): if it comes back as D or M, your second dash is too short or your dot went missing, which is the one fault a chart cannot show you. The practice set for G then tests the letter by ear once the word cue is gone.

Keep the player in the loop while you do it. Slow mode at 8 WPM lets you hear exactly where each dash ends; 14 WPM is close to a real contact. Work the neighbors too: F (..-.) and H (....) sit beside G in the alphabet, and the Morse code alphabet chart lines G up against M, Z, Q and D in one view.