I previously had a thread on problems I was having the internal sound card on 
FT8.  I was getting no output from the PC to the radio.  So thinking that the 
problem was how I had the internal sound card and WSJT-X set up, I switched 
back to using my SignaLink, which had worked perfectly before.  It worked fine 
for a while, but then the failed output problem returned. Mysteriously, it 
would start working again and then after a time fail again.

At one point I found that there were two USB Audio Codecs and the standard 
Realtek driver associated with the speaker settings.  I selected the one one 
not then i use, and the output returned. Then after another failure, I found 
that there was only one USB Audio Codec associated with the output.  

This morning I rebooted the computer with nothing connected and found only the 
Realtek driver.  I added the K3S USB cable, and one of the Codecs returned.  I 
added the SignaLink cable, and the second Codec returned.  By selecting the 
correct USB Codec, I was back in business.

So somehow the Codec driver for the SignaLink is getting changed or wiped out.  
I assume that when I used the internal sound card, the wrong Codec was selected.

I hope this helps anyone else having similar problems. Any insights on how the 
CODEC is wiped out would be much appreciated.

Lee, KV5M
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