[Elecraft] K2 headphone audio for sound card PSK31?

[Cathy James]

I ran some tests this evening with my K2 and my computer sound card and 
HamScope software.  80 meters was not great, but it was open and there 
were a number of QSOs going on.

The K2 was able to pick up signals and decode them quite well, and the 
narrow filters really help block QRM.  (My RTTY filter bandpasses are 
all over the place, though; I don't think I ever finished setting them 
up after getting Spectrogram going.  Have to revisit that!)

However, the audio drive from the K2 is much less than from the DX-70TH 
that I use as my primary digital mode rig.  Although the signals decoded 
well, the traces on the waterfall barely showed even at fairly high 
soundcard record volume settings.  With the DX-70TH plugged into the 
sound card instead, the same signals were brilliant yellow and easily 
found by eye.

What can I do to increase the audio output level of the K2 for sound 
card purposes?

Cathy
N5WVR