[Elecraft] K3 FT8 Help

[Rich]

I am at a loss on this one.   I have reviewed several online writeups on 
the matter but I am still stuck.

I am making these assumptions,  the K3s USB port can handle the audio 
in/out, rig control and PTT.

I have the following settings.

Audio IN set to K3 audio in USB codec  -  FT8 decodes fine

Audio OUT set to K3 audio out USB codec - no audio on TX

Rig Ctrl set to COM 10 - rig control is working fine.

PTT Com10 -  not sure exactly which setting to use  CAT, DTR, RTS,

The radio will TX but I have no indication of any power out, which I 
guess is due to no audio OUT.

Any ideas would be appreciated.

Please respond direct to keep from cluttering the list

Thanks

Rich

K3RWN