Q CODES - COMMON HAM RADIO Q SIGNALS

COMMON HAM RADIO Q SIGNALS

Hams use three-letter Q signals on every mode and even in face-to-face conversation. Here are the Q signals most commonly used in day-to-day operation. Each signal can be a question or an answer, as shown in the Meaning column. A complete list of ham radio Q signals.

Q Signal	Meaning
QRL	Is the frequency busy? The frequency is busy. Please do not interfere.
QRM	Abbreviation for interference from other signals.
QRN	Abbreviation for interference from natural or human-made static.
QRO	Shall I increase power? Increase power.
QRP	Shall I decrease power? Decrease power.
QRQ	Shall I send faster? Send faster (__words per minute [wpm]).
QRS	Shall I send more slowly? Send more slowly (__wpm).
QRT	Shall I stop sending or transmitting? Stop sending or transmitting.
QRU	Have you anything more for me? I have nothing more for you.
QRV	Are you ready? I am ready.
QRX	Stand by.
QRZ	Who is calling me?
QSB	Abbreviation for signal fading.
QSL	Did you receive and understand? Received and understood.
QSO	Abbreviation for a contact.
QST	General call preceding a message addressed to all amateurs.
QSX	I am listening on ___ kHz.
QSY	Change to transmission on another frequency (or to ___ kHz).
QTH	What is your location? My location is ____.