[Elecraft] Data modes issue

[Jim Littlefield]

Just got my new K3 and everything is great about it except, sound card 
data modes (PSK31, etc.) are not working. I put the radio in Data A 
mode. When I transmit, the rig is keyed, I can hear audio via the 
monitor function, but nothing is transmitted. I have tried cranking the 
Mic gain (actually the line in gain) way up, but that doesn't help. I 
have also confirmed the transmitter is not in test mode.

Any suggestions?

-- 
73 de Jim Littlefield WN1X