, or

The following Q Codes, taken from the official List, are widely used in the Amateur Service.

'Q' Code	Meaning
QRG	Will you tell me my exact frequency? Your exact frequency is ..... KHz
QRH	Does my frequency vary? Your Frequency Varies
QRI	What is the tone of my transmission? The tone of your transmission is..... (Amateur T1 - T9).
QRK	What is the readability of my signal? The readability of your signal is ..... (Amateur R1 - R9)
QRL	Are you busy? I am busy, Please do not interfere.
QRM	Are you being interfered with? I am being interfered with.
QRN	Are you troubled with static? I am troubled with static.
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 more slowly? Send more slowly.
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
QRX	When will you call me again? I will call you again at .... Hours.
QRZ	Who is calling me? You are being called by .... (on KHz).
QSA	What is the strength of my signal? The strength of your signal is .... (Amateur S1 - S9)
QSB	Are my signals fading? Your signals are fading.
QSD	Is my keying defective? Your keying is defective.
QSL	Can you give me acknowledgement of receipt? I give you acknowledgement of receipt.
QSO	Can you communicate with ..... direct or by relay? I can communicate with .... direct (or by relay through ....)
QSP	Will you relay to? I will relay to ...
QSV	Shall I send a series of VVV's? Send a series of VVV's.
QSY	Shall I change to another frequency? Change to transmission on another frequency (or on ..... KHz)
QSZ	Shall I send each word more than once? send each word twice
QTH	What is your location? My location is ....
QTR	What is the correct time? The correct time is .... Hours.