Q Signals (Q-Codes) Amateur radio operators use Q signals (Q codes) as shorthand to speed up non‐voice communication (CW or Morse code). Each Q signal represents information: advice, an answer, or a call for action. You turn the signal into a question by adding a question mark right after the Q signal. This list of common Q signals shows the meanings of the codes, as they would appear with and without a question mark: Q Signal Meaning QRL Is this frequency in use? The frequency is busy. QRM Man-made interference/devices (electrical contacts, fluorescents). QRN Natural interference, lightning etc. (static, hiss, crackle) QRO Shall I increase power? Increase power. QRP Shall I decrease power? Decrease power. QRQ I send faster? Send faster ( WPM). QRS Shall I send more slowly? Send slower ( WPM). QRT Shall I stop sending? Stop sending. (I’m QRT for the day.) QRU Anything more for me? I have nothing more for you. QRV Are you ready? I am ready. QRX When will you call again? I will call on kHz. QRZ Who is calling me? QSB Signal fading. QSL Received and understood. QSO Abbreviation for a contact. (Thanks for the QSO) QST Calling all stations. QSX I am listening on kHz. QSY Change frequency (or QSY to kHz). QTH What is your location? My location is . The 10 Q codes in bold type above are the only possible Q codes appearing on the I.C. Basic Certification exam.
Q Signals (Q-Codes) Amateur radio operators use Q signals (Q codes) as shorthand to speed up non‐voice communication (CW or Morse code). Each Q signal represents information: advice, an answer, or a call for action. You turn the signal into a question by adding a question mark right after the Q signal. This list of common Q signals shows the meanings of the codes, as they would appear with and without a question mark: Q Signal Meaning QRL Is this frequency in use? The frequency is busy. QRM Man-made interference/devices (electrical contacts, fluorescents). QRN Natural interference, lightning etc. (static, hiss, crackle) QRO Shall I increase power? Increase power. QRP Shall I decrease power? Decrease power. QRQ I send faster? Send faster ( WPM). QRS Shall I send more slowly? Send slower ( WPM). QRT Shall I stop sending? Stop sending. (I’m QRT for the day.) QRU Anything more for me? I have nothing more for you. QRV Are you ready? I am ready. QRX When will you call again? I will call on kHz. QRZ Who is calling me? QSB Signal fading. QSL Received and understood. QSO Abbreviation for a contact. (Thanks for the QSO) QST Calling all stations. QSX I am listening on kHz. QSY Change frequency (or QSY to kHz). QTH What is your location? My location is . The 10 Q codes in bold type above are the only possible Q codes appearing on the I.C. Basic Certification exam.
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