This is the complete Q-code as it was defined for maritime radio communication. Since CW communication has been abandoned for this purpose, this code is probably no longer in use.
Here only the "question" part is shown, but every code can either be a question or an answer.
See also the informal amateur radio Q-code.
QRA | What is the name of your station? |
QRB | How far approximately are you from my station? |
QRC | By what enterprise are the accounts for charges for your station settled? |
QRD | Where are you bound for and where are you from? |
QRE | What is your estimated time of arrival at ... (over ...)? |
QRF | Are you returning to ... ? |
QRG | Will you tell me my exact frequency (or that of ...)? |
QRH | Does my frequency vary? |
QRI | How is the tone of my transmission? |
QRJ | How many radiotelephone calls have you to book? |
QRK | What is the intelligibility of my signals (or those of ...)? |
QRL | Are you busy? |
QRM | Are you being interfered with? |
QRN | Are you troubled by static? |
QRO | Shall I increase transmitter power? |
QRP | Shall I decrease transmitter power? |
QRQ | Shall I send faster? |
QRR | Are you ready for automatic operation? |
QRS | Shall I send more slowly? |
QRT | Shall I stop sending? |
QRU | Have you anything for me? |
QRV | Are you ready? |
QRW | Shall I inform ... that you are calling him on ... kHz (or MHz)? |
QRX | When will you call me again? |
QRY | What is my turn? |
QRZ | Who is calling me? |
QSA | What is the strength of my signals (or those of ...)? |
QSB | Are my signals fading? |
QSC | Are you a cargo vessel? |
QSD | Is my keying defective? |
QSE | What is the estimated drift of the survival craft? |
QSF | Have you effected rescue? |
QSG | Shall I send ... telegrams at a time? |
QSH | Are you able to home on your direction-finding equipment? |
QSI | I have been unable to break in on your transmission. |
QSJ | What is the charge to be collected to ... including your internal charge? |
QSK | Can you hear me between your signals and if so can I break in on your transmission? |
QSL | Can you acknowledge receipt? |
QSM | Shall I repeat the last telegram which I sent you (or some previous telegram)? |
QSN | Did you hear me (or ... ) on ... kHz (or MHz)? |
QSO | Can you communicate with ... direct (or by relay)? |
QSP | Will you relay to ... free of charge? |
QSQ | Have you a doctor on board (or is ... on board)? |
QSR | Shall I repeat the call on the calling frequency? |
QSS | What working frequency will you use? |
QSU | Shall I send or reply on this frequency (or on ... kHz (or MHz)) |
QSV | Shall I send a series of Vs on this frequency (or on ... kHz (or MHz))? |
QSW | Will you send on this frequency (or on ... kHz (or MHz)) |
QSX | Will you listen to ... on ... kHz (or MHz)? |
QSY | Shall I change to transmission on another frequency? |
QSZ | Shall I send each word or group more than once? |
QTA | Shall I cancel telegram (or message) number ... ? |
QTB | Do you agree with my counting of words? |
QTC | How many telegrams have you to send? |
QTD | What has the rescue vessel or rescue aircraft recovered? |
QTE | What is my true bearing from you? |
QTF | Will you give me my position according to your bearings? |
QTG | Will you send two dashes of ten seconds each followed by your call sign (repeated ... times) (on ... kHz (or MHz))? |
QTH | What is your position in latitude and longitude? |
QTI | What is your true track? |
QTI | What is your true course? |
QTJ | What is your speed? |
QTK | What is the speed of your aircraft in relation to the surface of the Earth? |
QTL | What is your true heading? |
QTM | What is your magnetic heading? |
QTN | At what time did you depart from ... (place)? |
QTO | Have you left dock (or port)? |
QTP | Are you going to enter dock (or port)? |
QTQ | Can you communicate with my station by means of the International Code of Signals? |
QTR | What is the correct time? |
QTS | Will you send your call sign for tuning purposes or so that your frequency can be measured now (or at ... hours) on ... kHz (or MHz)? |
QTT | The identification signal which follows is superimposed on another transmission. |
QTU | What are the hours during which your station is open? |
QTV | Shall I stand guard for you on the frequency of ... kHz (or MHz) (from ... to ... hours)? |
QTW | What is the condition of survivors? |
QTX | Will you keep your station open for further communication with me until further notice (or until ... hours)? |
QTY | Are you proceeding to the position of incident and if so when do you expect to arrive? |
QTZ | Are you continuing the search? |
QUA | Have you news of ... ? |
QUB | Can you give me in the following order information concerning: the direction in degrees and speed of the surface wind, visibility, present weather, and amount, type and height of base of cloud above surface elevation at ... ? |
QUC | What is the number (or other indication) of the last message you received from me (or from ...)? |
QUD | Have you received the urgency signal sent by ... (call sign of mobile station)? |
QUE | Can you use telephony in ... (language), with interpreter if necessary; if so, on what frequencies? |
QUF | Have you received the distress signal sent by ...? |
QUG | Will you be forced to alight (or land)? |
QUH | Will you give me the present barometric pressure at sea level? |
QUI | Are your navigation lights working? |
QUJ | Will you indicate the true track to reach you (or ...)? |
QUK | Can you tell me the condition of the sea observed at ...? |
QUL | Can you tell me the swell observed at ...? |
QUM | May I resume normal working? |
QUN | Will vessels in my immediate vicinity please indicate their position, course and speed? |
QUO | Shall I search for ... (aircraft, ship, survival craft)? |
QUP | Will you indicate your position by searchlight, black smoke trail, pyrotechnic lights? |
QUQ | Shall I train my searchlight nearly vertical on a cloud, and if your aircraft is seen, deflect the beam up wind and on the water? |
QUR | Have survivors ... (1. received survival equipment, 2. been picked up by rescue vessel, 3. been reached by ground rescue) party? |
QUS | Have you sighted survivors or wreckage? |
QUT | Is position of incident marked? |
QUU | Shall I home ship or aircraft to my position? |
QUW | Are you in the search area designated as ...? |
QUX | Do you have any navigational warnings or gale warnings in force? |
QUY | Is position of survival craft marked? |
QUZ | May I resume restricted working? |