QCodes

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Code Question Answer Application
QUI Are your navigation lights working? [AP13] My navigation lights are working. [AP13] All services
QMW At ... (position or zone) what is (are) the flight level(s)/altitude(s) ... of the zero Celsius isotherm(s)? At ... (position or zone) the zero Celsius isotherm(s) is (are) at flight level(s)/altitude(s) ... Aeronautical Code signals
QTN At what time did you depart from ... (place)? I departed from ... (place) at ... hours. All services
QTU At what times are you operating? I am operating from ... to ... hours. Amateur Radio
QFT Between what heights above ... (datum) has ice formation been observed [at ... (position or zone)]? Ice formation has been observed at ... (position or zone) in the type of ... and with an accretion rate of ... between ... (figures and units) and ... (figures and units) heights above ... (datum). Aeronautical Code signals
QNI Between what heights above ... (datum) has turbulence been observed at ... (position or zone)? Turblence has been observed at ... (position or zone) with an intensity of ... between ... (figures and units) and ... (figures and units) heights above ... (datum). Aeronautical Code signals
QRC By what private enterprise (or state administration) are the accounts for charges for your station settled? The accounts for charges of my station are settled by the private enterprise ... (or state administration). All services
QSL Can you acknowledge receipt? I am acknowledging receipt. Amateur Radio
QSL Can you acknowledge receipt? I am acknowledging receipt. All services
QOA Can you communicate by radiotelegraphy (500 kHz)? I can communicate by radiotelegraphy (500 kHz). Maritime Mobile Service