[Elecraft] K3 and RigExpert question

[David F. Reed]

Hi folks;

I am having a problem getting digital modes going using a RigExpert with 
my K3.

I know I have everything hooked up right, as RX is fine, TX happens, but 
no power out.  I know the audio is coming to line in as I can hear it 
with the monitor turned up all the way.

What seems to be the problem is too low a sensitivity on the K3 input 
side (MIC gain all the way up in digital mode), as the RigExpert works 
fine with my TS-480 and my IC-7800; I only see this on my K3.

Any suggestions or help would be greatly appreciated.

Thanks and 73 de Dave, W5SV