Hello All,

More about the Q codes from Wikipedia.  Apologies for the formatting as the 
codes are in a variable-width table that is hard to format to 80 characters.

Note that 90% of these codes are rarely used, even in CW, but Q codes are used 
often enough that most hams know what QSY, QRT, QSL, and QSO mean.

From:
https://en.wikipedia.org/wiki/Q_code#Amateur_radio

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Amateur radio
Amateur radio actually has adapted two different sets of Q-codes for use in 
amateur communications. The first set come from the ITU civil series QRA 
through QUZ. Most of the meanings are identical to the ITU definitions, 
however, they must be looked at in the context of amateur communications. For 
example, QSJ? asks what the charges are for sending the telegraph. Since 
amateur communications are without charge, this Q-code would not make sense.

The second set is the set of QN Signals, used only in ARRL NTS nets. These 
operating signals generally have no equivalent in the ACP 131 publication or 
ITU publications, and are specifically defined only for use in ARRL NTS nets. 
They are not used in casual amateur radio communications.[13][14]

Selected Q-codes were soon adopted by amateur radio operators. In December 
1915, the American Radio Relay League began publication of a magazine titled 
QST, named after the Q-code for "General call to all stations". In amateur 
radio, the Q-codes were originally used in Morse code transmissions to shorten 
lengthy phrases and were followed by a Morse code question mark (··-- --··) if 
the phrase was a question.

Q-codes are commonly used in voice communications as shorthand nouns, verbs, 
and adjectives making up phrases. For example, an amateur radio operator will 
complain about QRM (man-made interference), or tell another operator that 
there is "QSB on the signal" (fading); "to QSY" is to
change your operating 
frequency, or to break in on a conversation QSK is often used even on VHF and 
UHF frequencies. (See also Informal usage, below.)

Q-codes as adapted for use in amateur radio

Code    Question        Answer or Statement
QLE     What is your expected signal?   The expected signal is low...
QNI     May I join the net?     You may check in...
QRA     What is the name (or call sign) of your station?        The name (or 
call sign) of my station is ...
QRG     Will you tell me my exact frequency (or that of ...)?   Your exact 
frequency (or that of ... ) is ... kHz (or MHz).
QRH     Does my frequency vary? Your frequency varies.
QRI     How is the tone of my transmission?     The tone of your transmission 
is (1. Good; 2. Variable; 3. Bad)
QRJ     How many voice contacts do you want to make?    I want to make ... 
voice contacts.
QRK     What is the readability of my signals (or those of ...)?        The 
readability of your signals (or those of ...) is ... (1 to 5).
QRL     Are you busy?   I am busy. (or I am busy with ... ) Please do not 
interfere.
QRM     Do you have interference? [from other stations] I have interference.
QRN     Are you troubled by static?     I am troubled by static.
QRO     Shall I increase power? Increase power.
QRP     Shall I decrease power? Decrease power.
QRQ     Shall I send faster?    Send faster (... wpm)
QRS     Shall I send more slowly?       Send more slowly (... wpm)
QRT     Shall I cease or suspend operation?/ shutoff the radio  I am 
suspending operation. /shutting off the radio
QRU     Have you anything for me?       I have nothing for you.
QRV     Are you ready?  I am ready.
QRW     Shall I inform ... that you are calling him on ... kHz (or MHz)? 
Please inform ... that I am calling him on ... kHz (or MHz).
QRX     Shall I standby / When will you call me again?  Please standby / I 
will call you again at ... (hours) on ... kHz (or MHz)
QRZ     Who is calling me?      You are being called by ... on ... kHz (or 
MHz)
QSA     What is the strength of my signals (or those of ... )?  The strength 
of your signals (or those of ...) is ... (1 to 5).
QSB     Are my signals fading?  Your signals are fading.
QSD     Is my keying defective? Your keying is defective.
QSG     Shall I send ... telegrams (messages) at a time?        Send ... 
telegrams (messages) at a time.
QSK     Can you hear me between your signals?   I can hear you between my 
signals.
QSL     Can you acknowledge receipt?    I am acknowledging receipt.
QSM     Shall I repeat the last telegram (message) which I sent you, or some 
previous telegram (message)?    Repeat the last telegram (message) which you 
sent me (or telegram(s) (message(s)) numbers(s) ...).
QSN     Did you hear me (or ... (call sign)) on .. kHz (or MHz)?        I did 
hear you (or ... (call sign)) on ... kHz (or MHz).
QSO     Can you communicate with ... direct or by relay?        I can 
communicate with ... direct (or by relay through ...).
QSP     Will you relay a message to ...?        I will relay a message to ... 
QSR     Do you want me to repeat my call?       Please repeat your call; I did 
not hear you.
QSS     What working frequency will you use?    I will use the working 
frequency ... kHz (or MHz).
QST     -       Here is a broadcast message to all amateurs.
QSU     Shall I send or reply on this frequency (or on ... kHz (or MHz))? Send 
or reply on this frequency (or on ... kHz (or MHz)).
QSW     Will you send on this frequency (or on ... kHz (or MHz))?       I am 
going to send on this frequency (or on ... kHz (or MHz)).
QSX     Will you listen to ... (call sign(s) on ... kHz (or MHz))?      I am 
listening to ... (call sign(s) on ... kHz (or MHz))
QSY     Shall I change to transmission on another frequency?    Change to 
transmission on another frequency (or on ... kHz (or MHz)).
QSZ     Shall I send each word or group more than once? Send each word or 
group twice (or ... times).
QTA     Shall I cancel telegram (message) No. ... as if it had not been sent? 
Cancel telegram (message) No. ... as if it had not been sent.
QTC     How many telegrams (messages) have you to send? I have ... telegrams 
(messages) for you (or for ...).
QTH     What is your position in latitude and longitude (or according to any 
other indication)?      My position is ... latitude...longitude
QTR     What is the correct time?       The correct time is ... hours
QTU     At what times are you operating?        I am operating from ... to ... 
hours.
QTX     Will you keep your station open for further communication with me 
until further notice (or until ... hours)?    I will keep my station open for 
further communication with you until further notice (or until ... hours).
QUA     Have you news of ... (call sign)?       Here is news of ... (call 
sign).
QUC     What is the number (or other indication) of the last message you 
received from me (or from ... (call sign))?     The number (or other 
indication) of the last message I received from you (or from ... (call sign)) 
is ...
QUD     Have you received the urgency signal sent by ... (call sign of mobile 
station)?       I have received the urgency signal sent by ... (call sign of 
mobile station) at ... hours.
QUE     Can you speak in ... (language), - with interpreter if necessary; if 
so, on what frequencies?        I can speak in ... (language) on ... kHz (or 
MHz).
QUF     Have you received the distress signal sent by ... (call sign of mobile 
station)?
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Later,
Sean

... The way to Hell is plastered with good resolutions. - German proverb
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