Browser setup Several ways to lookup a callsign on-line: QRZ.com - 1) - click a QSO in the log, then right-mouse click. 2) <Enter> `QRZcall` into the call field, where call is the lookup callsign. 3) - click a QSO in the log and <Enter> `QRZ` in the callsign field. 4) - in the grid activity or check list windows, click a line, then right-mouse click. DXHeat.com - 1) - in the Beacons window, click a line, then right-mouse for the DXCluster look-up.