QSA = What is the signal strength?
QRG = Tell me exact frequency
QSB = Are my signals fading?
QRH = Does frequency vary?
QSD = Is my keying defective?
QRI = How is tone of transmission?
QSG = Send... message at one time
QRK = Readability of signal is
QSL = Acknowledge receipt
QRL = Are you busy? I am busy
QSM = Repeat last message
QRM = Manmade interference
QSO = Communicate direct or via relay
QRN = Static
QSP = Will you relay to...?
QRO = Increase power
QSV = Send series of V's
QRP = Decrease power
QRQ = Send faster
QSX = Shall I switch to another frequency?
QRS = Send slower
QSY = Switching frequencies
QRT = Stop sending
QSZ = Send each group twice
QRU = Do you have anything for me?
QTA = Cancel message
QRV = Are you ready? I am ready
QTB = Do you agree with number of words?
QRW = I am calling on... frequency
QTC = How many messages to you have to send?
QRX = What is the next schedule?
QTH = Location
QRZ = Who is calling?
QTR = Exact time
