What does QSO .... ? stand for?

QSO .... ? stands for "Can you communicate with .... direct or by relay?"

How to abbreviate "Can you communicate with .... direct or by relay?"?

"Can you communicate with .... direct or by relay?" can be abbreviated as QSO .... ?

What is the meaning of QSO .... ? abbreviation?

The meaning of QSO .... ? abbreviation is "Can you communicate with .... direct or by relay?"

What does QSO .... ? mean?

QSO .... ? as abbreviation means "Can you communicate with .... direct or by relay?"