By allowing the "Serial Port" panel to be set to "None", this release eliminates the need to select a serial port on the Configuration window's "External Modem" tab in order to enable RTTY operation with an Elecraft K3/KX3 via Commander, or with an external RTTY decoder like GRITTY (tnx to Jim N7US)

WinWarbler 8.4.2 is available via the DXLab Launcher or via 

<http://www.dxlabsuite.com/download.htm>

    73,

        Dave, AA6YQ