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BY8AA在7.080MHz发信,想在7.160MHz收听,呼叫的方法是()……

BY8AA在7.080MHz发信,想在7.160MHz收听,呼叫的方法是()

A.CQ North America,This is BY8AA,Listening on 7.160MHz
B.CQ North America,This is BY8AA,QSY 7.160MHz
C.CQ North America,QSP 7.160MHz
D.CQ North America,This is BY8AA,QSX 7160KHz

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