[Elecraft] K3s not transmitting AFSK

[Mike Dodd]

It's all working now, and I can't explain why.

Rich VE3KI sent me a suggestion off-list to try the Windows 10 Sound 
Control Panel.

The ONLY thing I did there was select the USB CODEC, check that the 
playback level was not 0, and click the Test Device button. That 
produced a few tones, and the K3 produced 100W into a dummy load in the 
DATA mode, just as it should.

I launched N1MM with the Digital window open, and pressing F4 sent my 
call, and the K3 again produced RF.

So I switched back to the Carolina Windom antenna and worked LA1TV on 
15M with the KPA500 pumping out 300W.

Bottom line: The K3 was not producing RF in DATA mode when I started 
this morning, then produced RF after I tested the USB CODEC in Sound 
Control Panel. I have no clue why.

Thanks again to everyone who offered advice.

---
73, Mike N4CF
Louisa County, VA USA
Elecraft K3s / P3 / KPA500 / KAT500
Carolina Windom up 45'
http://n4cf.mdodd.com