3. The absence of q; a useful omission, CW serving instead.
"The English Language"
Robert Gordon Latham
I built a CW transmitter using four Philips valves.
"The Dawn of Amateur Radio in the U.K. and Greece A Personal View"
Norman F. Joly
As representing the Frankish form, we have more names in the sharper form CW, which is represented by q.
"Surnames as a Science"
Robert Ferguson