Morse Code Abbreviations, Prosigns & Q-Codes

Learning the morse code alphabet, the numbers and the punctuation symbols is only half the story. If you sat down next to an experienced operator during a real contact, you would hear plenty of dots and dashes that don't spell out ordinary words at all. Instead of sending “this is,” they send DE. Instead of “my location is London,” they send QTH LONDON. Instead of “end of my message, over to you,” they run two letters together into a single symbol. That second layer — the operating shorthand — is what this guide is about.

Think of it as a reference companion to the character pages on Morsify. Where the alphabet, numbers and symbols pages teach you the characters, this page teaches the conventions that experienced operators layer on top of them. None of it is strictly required to translate a word into morse — but it is exactly what turns a beginner who can spell in code into someone who can actually hold a conversation on the air. The shorthand falls into three families, and it helps to keep them straight from the start:

• Abbreviations — plain-language shortcuts (like TNX for “thanks” or WX for “weather”) that simply save time.
• Prosigns — procedural signals that control the flow of a transmission (start, wait, over, end), sent as two letters run together into one symbol.
• Q-codes — three-letter codes beginning with Q, each standing in for a whole sentence about the contact itself.

Why operators bother with shorthand

The reason is simple: morse code is slow. A comfortable conversational speed is around 20 words per minute, and even fast operators rarely push past 35. When every character costs real time and effort, you compress everything you possibly can. A three-letter Q-code that replaces a ten-word sentence is not laziness — it is the difference between a quick, efficient exchange and a painfully long one.

There is a second, quieter advantage: the shorthand is international. Q-codes and numbers like 73 mean the same thing to an operator in Japan, Italy or Brazil, none of whom may share a spoken language. Two strangers with no common tongue can still have a complete, friendly contact — exchanging signal reports, locations, weather and good wishes — entirely through a shared shorthand. Much of this vocabulary is older than radio itself, inherited from the landline telegraphers of the 1800s who faced the very same pressure to save keystrokes.

Prosigns: the punctuation of a live contact

A prosign (procedural signal) is a control character. It doesn't carry a message — it manages one, marking where a transmission starts, when to wait, when it is the other station's turn, and when the whole contact is over. The defining feature is how it is sent: the two letters are keyed with no gap between them, so they fuse into a single, unmistakable symbol. Because of that, prosigns are traditionally written with a bar over the top (like the barred “AR”) to show they are one character, not two letters.

In the table below, dots are written as · (“dit”) and dashes as – (“dah”). You can confirm every pattern against the letter values on our alphabet chart — a prosign is simply its component letters run together.

The single most useful distinction here is K versus KN. Plain K means “over — anyone go ahead,” which is how you end a general CQ call. KN means “over, but only to you” — you use it once you are in contact with a specific station and don't want a third operator jumping in. Getting this pair right instantly marks you as someone who knows the conventions.

You may notice some of these patterns look familiar. AR (·–·–·) is keyed identically to the “+” sign, and BT (–···–) identically to “=”. That is not a coincidence: those punctuation marks were assigned the same run-together letter pairs. The dot-dash string is shared, but the purpose is not, which is the difference between an operating prosign and the ordinary punctuation covered on our symbols page.

Q-codes: three letters that carry a whole sentence

Q-codes are the workhorses of an on-air conversation. Each is exactly three letters, always starting with Q, and each stands in for a complete idea. They were created in the early 1900s for maritime and aeronautical radiotelegraphy — a way to communicate essential information across language barriers — and amateur radio adopted the most useful ones.

The clever part is that every Q-code works two ways. Send it with a question mark and it asks; send it plain and it answers. So QTH? means “what is your location?” and QTH LONDON means “my location is London.” QRL? asks “is this frequency in use?” while QRL answers “yes, it is busy.” Operators also bend them into nouns and verbs — you might “QSY up five” (move up five kilohertz), send someone “a QSL card,” or have “a nice QSO” (a good contact).

A useful pair to learn together is QRM and QRN. Both describe things that make you hard to hear, but QRM is man-made interference — another station, electrical noise, a nearby signal — while QRN is natural static from the atmosphere, like a distant thunderstorm crackling across the band. Reporting the right one tells the other operator whether the problem is likely to move or to pass.

CW and ham radio abbreviations

The third family is the simplest: ordinary abbreviations. These aren't procedural signals or coded sentences — they are just conventional shortcuts, many with the vowels stripped out to save keystrokes (PSE for please, TNX for thanks, UR for your). A good number were inherited directly from 19th-century landline telegraph codes, including the number sign-offs 73 and 88.

Two of these reward a second look. The signal report RST is a compact rating you send and receive in nearly every contact: Readability from 1 to 5, Strength from 1 to 9, and Tone from 1 to 9. A perfect report is “599” — perfectly readable, extremely strong, with a pure tone. And 73 is worth getting right as a matter of etiquette: because the number already means the entire phrase “best regards,” you send it in the singular. “73” is correct; “73s” quietly marks you as new.

Putting it together: a real contact, decoded

Individually, these codes can feel abstract. Strung together in an actual contact, they click into place. Here is a short, realistic exchange between two example stations — W1ABC and M0XYZ (both invented callsigns). The = is the BT separator, sent between thoughts like a spoken pause.

Line by line, that reads as:

• W1ABC calls: “Calling any station, this is W1ABC — over, anyone reply” (note the plain K).
• M0XYZ answers: “W1ABC, this is M0XYZ — over.”
• W1ABC replies: “M0XYZ, this is W1ABC. Good evening, old man. Thanks for the call. Your report is 599. My location is Boston. How do you copy? — back to you specifically” (KN). Here FER is “for” and CPY is “copy.”
• M0XYZ signs off: “W1ABC, this is M0XYZ. Received, fine business. Your report 579. My location London. Best regards and see you later.” The closing SK means the contact is finished.

Notice how little of that is spelled out in plain words — and yet two operators who may not share a language have exchanged names, signal reports, locations and good wishes. That efficiency, built from three small families of shorthand, is why the conventions have survived for well over a century.

Further reading

• Morse Code Alphabet — the full A–Z chart every prosign is built from
• Morse Code Numbers — the digits behind 73, 88 and the 599 report
• Morse Code Symbols — punctuation and special characters, and how they differ from prosigns
• What Is Morse Code? — how the code works, in plain terms
• Learn Morse Code — interactive drills to start practising now
• Is Morse Code Still Used Today? — where CW and this shorthand live on in 2026
• Morsify Translator — turn any text into morse code with audio