| International Q-Code | ||||
| Extract from the RSGB Amatuer Operating Manual | ||||
| QRA | What is the name of your stn? | QRM | Interference from other stns | |
| QRB | How far are you from my stn? | QRO | High power | |
| QRG | Will you tell me my freq? | QRT | Close down station | |
| QRH | Does my frequency vary? | QSB | Fading | |
| QRI | How is the tone of my transm? | QSO | Radio Contact | |
| QRK | Intelligibility of my frequency? | QTH | Location (eg my QTH Inanam) | |
| QRL | Are you busy? | QRN | Electrical or atmospheric interference | |
| QRM | Interference? | QRP | Low power | |
| QRN | Any trouble with static? | QRX | Stand by | |
| QRO | Shall I increase transm. pwr? | QSL | Card to confirm contact | |
| QRP | Shall I decrease transm. pwr? | QSY | Change frequency | |
| QRQ | Shall I send faster? | RST Code | ||
| QRR | Ready for automatic operation? | Readability | ||
| QRS | Shall I send slower? | R1 | Unreadable. | |
| QRT | Shall I stop sending? | R2 | Barely readable, occasional words distinguishable. | |
| QRU | Have you anything for me? | R3 | Readable with considerable difficulty. | |
| QRV | Are you ready? | R4 | Readable with practically no difficulty. | |
| QRX | When will you call again.? | R5 | Perfectly readable. | |
| QRZ | Who is calling me? | Signal strength | ||
| QSD | Is my keying defective? | S1 | Faint, signals barely readable | |
| QSN | Did you hear me or (c/s)? | S2 | Very weak signals | |
| QSO | Can you communicate with (c/s)? | S3 | Weak signals | |
| QSP | Will you relay to (c/s)? | S4 | Fair signals | |
| QSR | Rpt call on calling frq? | S5 | Fairly good signals | |
| QSS | What working freq. will you use? | S6 | Good signals | |
| QSU | Shall I send or reply oa this freq? | S7 | Moderately strong signals | |
| QSV | Shall I send V's on this freq? | S8 | Strong signals | |
| QSW | Will you send on this freq? | S9 | Extremely strong signals | |
| QSX | Will you listen to (c/s) on...freq? | Tone | ||
| QSY | Shall I change to...frequency? | Tl | Extremely rough hissing note | |
| QSZ | Shall I repeat words or groups? | T2 | Very rough ac note, not musical | |
| QTH | What is your lat. & long? | T3 | Rough, low-pitched ac note, mod. music | |
| QTR | What is the correct time? | T4 | Rather rough ac note, mod. musical | |
| QTS | Send call sign for tuning? | T5 | Musically modulated note | |
| QTV | Shall I guard frequency...? | T6 | Modulated note, slight trace of whistle | |
| QTX | Will you keep your stn open? | T7 | Near dc note, smooth ripple | |
| QUA | Have you news of (c/s)? | T8 | Good dc note, just a trace of ripple | |
| QUM | May I resume normal working? | T9 | Purest dc note | |
| QRY | What number is my turn? | |||
| QSB | Are my signals fading? | |||
| QSL | Can you acknowledge receipt? | |||