Amateur radio operators such as myself would. My license callsign is W3DTV. If you heard me say, "(Your callsign), This is whiskey-three-(radio static)-victor" and you are a fellow amateur radio operator you would say, "QRZ", as shorthand for "who is calling me?" and I would know you didn't hear my callsign so I would repeat, "(Your callsign), This is whiskey-three-delta-tengo-victor". QRZ like all other Q codes are used internationally in the amateur radio community.
Amateur radio operators such as myself would. My license callsign is W3DTV. If you heard me say, "(Your callsign), This is whiskey-three-(radio static)-victor" and you are a fellow amateur radio operator you would say, "QRZ", as shorthand for "who is calling me?" and I would know you didn't hear my callsign so I would repeat, "(Your callsign), This is whiskey-three-delta-tengo-victor". QRZ like all other Q codes are used internationally in the amateur radio community.