In Morse code, the three letter grouping QSK is part of the International Q code which is one of several International ACP-131 brevity codes which literally means "" I can listen between my signals.
In Morse code, the three letter grouping QSK is part of the International Q code "" I can listen between my signals. This part of the International Q code is one of several International ACP-131 brevity codes. These 131 brevity codes literally means.