I am able to use my Fldigi with my RigBlaster Advantage to perform real-keyed CW on my Kenwood TS-120s in Windows, but not on Linux even though I use the same settings in Fldigi on Linux. The settings that work in Windows are: Connect CW/FSK jack of RigBlaster to CW jack of radio. Connect microphone cable between RigBlaster and radio. Set TX switch of RigBlaster to VOX. Do not enable VOX on the radio. In Fldigi, go to Rig Control | Hardware PTT Check only "Use separate port PTT" and "Use RTS." Choose the correct device (Happens to be COM4) in WIndows In Windows, Fldigi will automatically PTT the radio and key CW that I enter. The FSK light flashes with each dit/dah. Fldigi releases PTT when finished. In Linux, I get no PTT or CW keying activity with the same settings I used in Windows. I checked to make sure I selected the correct device in Rig Control settings Linux and even tried all the other devices to be sure. Software versions: Windows: 8.1 Linux: OpenSUSE 15.2 Fldigi: 4.1.14 Any suggestions?