Hello, anyone kn hw to merge the master data files together to create one master with all call signs to use with F12 key? copy paste don't wk, drag and drop either? Tnx AD1C for SS update! I changed NWT to NT and lost NTX hi hi. The new file works FB. Now onto SSCW for my 6th mug CleanSweep, service for 6, hi hi! 73, Bernie/WO2N.>