HAM RadioQ-codes
QRA – What ship or coast station is this?
QRB – What is your distance?
QRC – What is your true bearing?
QRD – What are you bound for?
QRF – What are you bound from?
QRG – What line do you belong to?
QRH – What is your wavelength in meters?
QRJ – How many words you have to send?
QRK – How do you receive me?
QRL – Are you busy?