Q Codes

CodeMeaningSample use
Common Amateur Radio Q Codes
Source: amateur-radio-wiki.net
QRGExact frequencyHE TX ON QRG 14205 kHz
QRITone (T in the RST code)UR QRI IS 9
QRKIntelligibility (R in the RST code)UR QRK IS 5
QRLThis frequency is busy.Used almost exclusively with morse code, usually as a question (QRL? – is this frequency busy?) before transmitting on a new frequency
QRMMan-made interferenceANOTHER QSO UP 2 kHz CAUSING LOT OF QRM
QRNNatural interference, e.g. static crashesBAND NOISY TODAY LOT OF QRN
QROIncrease powerNEED QRO WHEN PROP POOR
QRPDecrease powerQRP TO 5 W (As a mode of operation, a QRP station is five watts or less, a QRPp station one watt or less)
QRQSend more quicklyTIME SHORT PSE QRQ
QRRTemporarily unavailable/away, please waitWILL BE QRR 30 MIN = THAT STN IS QRR NW
QRRRLand distressA non-standard call proposed by ARRL for land-based or railroad emergency traffic in situations where response from ships at sea (which listened for SOS) was neither needed nor desired. Now deprecated.
QRSSend more slowlyPSE QRS NEW TO CW (QRS operation – a slower dot rate – is useful during weak-signal conditions; a QRSS mode uses an extremely low code rate on a channel less than 1Hz wide to allow reception under extreme QRP conditions)
QRTStop sendingENJOYED TALKING 2 U = MUST QRT FER DINNER NW
QRUHave you anything for me?QRU? ABOUT TO QRT
QRVI am readyWL U BE QRV IN UPCOMING CONTEST?
QRXWill call you againQRX @ 1500H
QRZYou are being called by ________.QRZ? UR VY WEAK (Only someone who has previously called should reply)
QSASignal strengthUR QSA IS 5
QSBFading of signalTHERE IS QSB ON UR SIG
QSDYour keying is defectiveQSD CK YR TX
QSKBreak-inI CAN HR U DURING MY SIGS PSE QSK
QSLI Acknowledge receiptQSL UR LAST TX = PSE QSL VIA BURO (i.e. please send me a card confirming this contact).
QSMRepeat last messageQRM DROWNED UR LAST MSG OUT = PSE QSM
QSNI heard youQSN YESTERDAY ON 7005 kHz
QSOA conversationTNX QSO 73
QSPRelayPSE QSP THIS MSG TO MY FRIEND
QSTGeneral call to all stationsQST: QRG ALLOCS HV CHGD
QSXI am listening on … frequencyQSX 14200 TO 14210 kHz
QSYShift to transmit on …LETS QSY UP 5 kHz
QTADisregard last messageQTA, DID NOT MEAN THAT
QTCTrafficSTN WID EMRG QTC PSE GA
QTHLocationQTH IS SOUTH PARK CO
QTRExact timeQTR IS 2000 Z