Q Signals take the form of a question only when each is followed by a
question mark.

QRG Will you tell me my exact frequency (or that of ___)?
Your exact frequency (or that of ___) is ___ kHz.
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 Are you receiving me badly?
I can not receive you. Your signals are too weak.
QRK What is the intelligibility of my signals (or those of ___)?
The intelligibility of your signals (or those of ___) is:
(1. Bad 2. Poor 3. Fair 4. Good 5. Excellent)
QRL Are you busy?
I am busy (or I am busy with ___). Please do not interfere.
QRM Is my transmission being interferred with?
Your transmission is being interferred with ___.
(1. Nil 2. Slightly 3. Moderately 4. Severely 5. Extremely)
QRN Are you troubled by static?
I am troubled by static ---. (1-5 as under QRM)
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 stop sending?
Stop sending.
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 on ___ kHz?
Please inform ___ that I am calling on ___ kHz.
QRX When will you call me again?
I will call you again at ___ hours (on ___ kHz).
QRY What is my turn?
Your turn is numbered ___.
QRZ Who is calling me?
You are being called by ___ (on ___ kHz).

QSA What is the strength of my signals (or those of ___)?
The strength of you signals (or those of ___) is ___.
(1. Scarcely perceptable 2. Weak 3. Fairly good 4. Good 5. Very good)
QSB Are my signals fading?
Your signals are fading.
QSD Is my keying defective?
Your keying is defective?
QSG Shall I send ___ messages at a time?
Send ___ messages at a time.
QSK Can you hear me in between your signals and if so, can I break in on
your transmission?
I can hear you between my signals; break in on my transmission.
QSL Can you acknowledge receipt?
I am acknowledging receipt.
QSM Shall I repeat the last message I sent you, or some previous message?
Repeat the last message you sent me [or message(s) number(s) ___].
QSN Did you hear me (or ___) on ___ kHz?
I did hear you (or ___) on ___ kHz.
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 ___.
QST General call proceding a message addressed to all amateurs and ARRL
members. This is in effect, "CQ ARRL".
QSU Shall I send or reply on this frequency (or on ___ kHz)?
Send a series of Vs on this frequency (or on ___ kHz).
QSW Will you send on this frequency (or on ___ kHz)?
I am going to send on this frequency (or on ___ kHz).
QSX Will you listen to ___ on ___ kHz?
I am listening to ___ on ___ kHz.
QSY Shall I change to to transmission on another frequency?
Change transmission to another frequency (or ___ kHz).
QSZ Shall I send each word or group more than once?
Send each word or group twice (or ___ times).

QTA Shall I cancel message number ___?
Cancel message number ___.
QTB Do you agree with my counting of words?
I do not agree with your counting of words. I will repeat the first
letter or digit of each word or group.
QTC How many messages have you to send?
I have ___ messages for you (or for ___).
QTH What is your location?
My location is ___.
QTR What is the correct time?
The correct time is ___.

These are from the ARRL Operating Manual -- 4th edition page 15-3.

QNA* ANSWER in prearranged order
QNB* act as relay BETWEEN _______ and ________
QNC all net stations COPY
I have a message for all net stations
QND* net is DIRECTED (controlled by net control station)
QNE* ENTIRE net standby
QNF net is FREE (not controlled)
QNG TAKE over as NET CONTROL station
QNH your net frequency is HIGH
QNI net stations report IN
I am reporting into the net. (follow with a list of traffic or QRU)
QNJ can you copy me?
QNK* transmit messages for _________ to_______
QNL your net frequency is LOW
QNM* you are QRMing the net. Standby.
QNN NET CONTROL station is ______.
What station has net control?
QNO station is leaving the net
QNP unable to copy you
unable to copy _______.
QNQ* move frequency to ______ and wait for ________ to finish handling
traffic. Then send him traffic for __________.
QNR* answer _______ and RECEIVE traffic
QNS following STATIONS are in the net
(follow with list)
request list of stations in the net
QNT request permission to leave the net for ____ minutes (TEMPORARY)
QNU* the net has traffic for YOU. Standby.
QNV* establish CONTACT with ____ on his frequency.
If successful, move to _______ and SEND him TRAFFIC for ____.
QNW How do I ROUTE messages for ______?
QNX you are EXCUSED from the net.
REQUEST to be EXCUSED from the net.
QNY* Shift to another frequency (or to ______kHZ) to clear traffic with ___.
QNZ ZERO beat your signal with mine

*for use only by net control station

Then there is the usual caution about only using these for traffic nets.