If you already have had unfinished QSO with the station you can mark this QSO as Error QSO and make complete QSO later. Function add QSO with ERROR callsign. This QSO is not covered by statistics.
Sets operator's callsign. The callsign is used for talk. It's also saved with each QSO for statistics. If you check the box, operator's callsign will be set for all bands.