[Elecraft] K3 digital modes using HRD via RigExpert Standard

[David F. Reed]

Folks,

I am having some trouble getting my K3 to work digital modes running HRD 
and DM780 software and a RigExpert Standard as the interface.

I am curious what I might be doing wrong.

As far as sound selection, I am using the USB audio codecs, and it is 
receiving fine, (RTTY and MT63), and it will switch to transmit when 
requested, but no drive seems to be happening.

I have set the mic sel on the K3 to Line In (back panel), where my audio 
from the RigBlaster is going, and tried adjusting the MIC level (affects 
Line in in that mode) to no avail.

Any hints?

Thanks and 73 de Dave, W5SV