International Q Code is an abbreviated way to exchange a great deal of information with a simple code. The Q Code consists of three-letter groups with each group having a specific meaning. Each group begins with the letter Q. Auxiliary letter groups or numbers are also used to help define the information that is need or passed with certain Q Code three-letter groups.
The International Q Code can be arranged in three types of code groups according to the second letter in the three-letter Q Code.
The Q Code comprises :
A. General Codes, second letter of which is R, S, T or U. (Some used by Hams).
B. Maritime Service Codes, second letter of which is O, P or Q.
C. Aeronautical Codes, second letter of which is A, B, C, D, E, F, G, H, I, J, K, L, M or N.
Some common Q-Codes used by Amateur Radio Operators are:
|Signal||Question||Signal||Answer, Advice or Order|
|QRG?||Will you indicate my exact frequency in kilohertz?||QRG||Your frequency is ... kHz.|
|QRH?||Does my frequency vary?||QRH||Your frequency varies.|
|QRI?||How is the tone of my transmission?||QRI||The tone of your transmission is ...
|QRJ?||Are you receiving me badly? Are my signals weak?||QRJ||I cannot receive you. Your signals are too weak.|
|QRK?||What is the legibility of my signals (1 to 5)?||QRK||The legibility of your signals is ... (1 to 5).|
|QRL?||Are you busy?||QRL||I am busy (or busy with....). Please do not interfere.|
|QRM?||Are you being interfered with?||QRM||I am being interfered with.|
|QRN?||Are you troubled by electrical noise?||QRN||I am troubled by electrical noise.|
|QRO?||Must I increase power?||QRO||Increase power.|
|QRP?||Must I decrease power?||QRP||Decrease power.|
|QRQ?||Must I send faster?||QRQ||Send faster ... (words per min.).|
|QRS?||Must I send more slowly?||QRS||Transmit more slowly ... (w.p.m.).|
|QRT?||Must I stop transmission?||QRT||Stop transmission.|
|QRU?||Have you anything for me?||QRU||I have nothing for you.|
|QRV?||Are you ready?||QRV||I am ready.|
|QRW?||Must I advise ... that you are calling him on ... kHz?||QRW||Please advise ... that I am calling him on ... kHz.|
|QRX?||When will you call again?||QRX||I will call you again at ... hours (on ... kHz).|
|QRZ?||By whom am I being called?||QRZ||You are being called by ...|
|QSA?||What is the strength of my signals (1 to 5)?||QSA||The strength of your signals is ... (1 to 5).|
|QSB?||Does the strength of my signals vary?||QSB||The strength of your signals varies.|
|QSD?||Is my keying correct? Are my signals distinct?||QSD||Your keying is incorrect; your signals are bad.|
|QSG?||Must I transmit ... telegrams (or one telegram) at a time?||QSG||Transmit ... telegrams (or one telegram) at a time.|
|QSK?||Shall I continue the transmission of all my traffic?||QSK||I can hear you between my signals. Continue: I shall interrupt you if necessary.|
|QSL?||Can you acknowledge receipt?||QSL||I am acknowledging receipt.|
|QSM?||Shall I repeat the last telegram I sent you?||QSM||Repeat the last telegram you sent me.|
|QSO?||Can you communicate with ... directly (or through...)?||QSO||I can communicate with ... direct (or through...).|
|QSP?||Will you relay to ...?||QSP||I will relay to ... free of charge.|
|QSV?||Shall I send a series of VVV....?||QSV||Send a series of VVV.|
|QSX?||Will you listen for ... (call sign) on ... kHz?||QSX||I am listening for ... on ... kHz.|
|QSY?||Shall I change to ... kilohertz without changing the type of wave?||QSY||Change to ... kHz without changing type of wave.|
|QSZ?||Shall I send each word or group twice?||QSZ||Send each word or group twice.|
|QTA?||Shall I cancel nr ... as if it had not been sent?||QTA||Cancel nr ... as if it had not been sent.|
|QTB?||Do you agree with my word count?||QTB||I do not agree with your word count; I shall repeat the first letter of each word and the first figure of each number.|
|QTC?||How many telegrams have you to send?||QTC||I have ... telegrams for you or for ....|
|QTH?||What is your position (location)?||QTH||My position (location) is ....|
|QTR?||What is the exact time?||QTR||The exact time is ....|