Q Signals Reference
Standard International Q Codes — used in Morse, voice, and digital amateur communication.
| Q-Code | Meaning (Statement) | As a Question |
|---|---|---|
| QRA | My station call sign is ___ | What is your call sign? |
| QRB | The distance between our stations is ___ miles/km | How far are our stations apart? |
| QRG | Your exact frequency is ___ kHz | Will you tell me my exact frequency? |
| QRH | Your frequency varies | Does my frequency vary? |
| QRI | Your tone is ___ (1–3) | How is my tone? |
| QRK | Your signals are readable (1–5) | What is the readability of my signals? |
| QRL | This frequency is in use | Is this frequency in use? |
| QRM | I am being interfered with | Are you being interfered with? |
| QRN | I am troubled by static | Are you troubled by static? |
| QRO | Increase power | Shall I increase power? |
| QRP | Reduce power | Shall I reduce power? |
| QRQ | Send faster | Shall I send faster? |
| QRS | Send more slowly | Shall I send more slowly? |
| QRT | Stop sending | Shall I stop sending? |
| QRU | I have nothing for you | Have you anything for me? |
| QRV | I am ready | Are you ready? |
| QRX | I will call you again at ___ | When will you call me again? |
| QRZ | You are being called by ___ | Who is calling me? |
| QSA | Your signal strength is ___ (1–5) | What is my signal strength? |
| QSB | Your signals are fading | Are my signals fading? |
| QSD | Your keying is defective | Is my keying defective? |
| QSK | I can hear you between my signals | Can you hear me between your signals? |
| QSL | I acknowledge receipt | Can you acknowledge receipt? |
| QSM | Repeat last message | Shall I repeat the last message? |
| QSN | I heard you on ___ kHz | Did you hear me on ___ kHz? |
| QSO | I can communicate with ___ | Can you communicate with ___? |
| QSP | I will relay to ___ | Will you relay to ___? |
| QSY | Change frequency to ___ | Shall I change frequency to ___? |
| QTC | I have ___ messages for you | How many messages have you? |
| QTH | My location is ___ | What is your location? |
| QTR | The time is ___ | What is the correct time? |
| QTT | Training or test signal | Is this a training/test transmission? |
“Q-signals — the shorthand that connects operators across language and distance.”
This work by Richard Bailey (KB5JBV) and the Resonant Frequency Podcast is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License .
Sharing encouraged — just don’t resell, and keep the credits intact.
