| Abbreviation | Question | Answer or Notice |
| QRA | What ship or coast station is that? | This is .......... |
| QRK | How do you receive me? | I am receiving well. |
| QRL | Are you receiving badly? Shall I send 20? | I am receiving badly. Please send 20. |
| QRM | Are you being interfered with? | I am being interfered with. |
| QRN | Are the atmospherics strong? | Atmospherics are very strong. |
| QRO | Shall I increase power? | Increase power. |
| QRP | Shall I decrease power? | Decrease power. |
| QRQ | Shall I send faster? | Send faster. |
| QRS | Shall I send slower? | Send slower. |
| QRT | Shall I stop sending? | Stop sending. |
| QRU | Have you anything for me? | I have nothing for you. |
| QRV | Are you ready? | I am ready. All right now. |
| QRW | Are you busy? | I am busy (or: I am busy with .......) Please do not interfere. |
| QRX | Shall I stand by? | Stand by. I will call you when required. |
| QRY | When will be my turn? | Your turn will be No. ....... |
| QRZ | Are my signals weak? | Your signals are weak. |
| QSA | Are my signals strong? | Your signals are strong. |
| QSR | Is my tone bad? | The tone is bad. |
| QSC | Is my spacing bad? | Your spacing is bad. |
| QSD | What is your time? | My time is ..... |
| QSP | Shall I inform ....... that you are calling him? | Inform ...... that I am calling him. |
| QSQ | Is ....... calling me? | You are being called by ......... |
| QSR | Will you forward the radiogram? | I will forward the radiogram. |
| QST | Have you received the general call? | General call to all stations. |
| QSU | Please call me when you have finished (or: at ...... o'clock)? | Will call when I have finished. |
| QSZ | — | Send each word twice. I have difficulty in receiving you. |
| QTA | — | Repeat the last radiogram. |
When an abbreviation is followed by a mark of interrogation, it refers to the question indicated for that interrogation.