What does it mean when a CW operator sends “KN” at the end of a transmission?
No US stations should call
Operating full break-in
Listening only for a specific station or stations✓الإجابة الصحيحة
Closing station now
الشرح
KN, sent as a single run-together character, closes a transmission to everyone except the station being worked. Plain K is the open invitation; KN is deliberately the narrower one.