I'm trying to get my K3s with built-in USB sound card working with MMTTY
in data mode AFSK A. I had this set up and working FB in the past, but
now I can't transmit.
Since the last time I used RTTY, I have installed a KPA500 and KAT500,
with their associated factory cabling. But Elecraft Support says these
have no effect on the USB sound card.
I'm running Windows 8.1 Pro.
I am convinced that audio from an application is not reaching the USB
sound card. In Control Panel I can test the speakers by playing a sound.
If I do this test with the computer speakers, I hear the sound. But if I
test with the USB audio codec, the K3 doesn't go into XMIT (VOX is on),
and there is no indication on the ALC meter.
I have rebooted the PC several times.
The K3 Utility communicates with the K3s, and the Terminal can transmit
in the FSK D mode. But I assume Terminal does not send audio FSK tones,
so it's of no help there.
I have unplugged and re-plugged the USB cable from the Elecraft
equipment to the PC, but this did not solve the problem. Windows Control
Panel says the audio device is working correctly.
But it doesn't receive audio from Windows applications.
Does anyone have any suggestions?
Thank you.
--
73, Mike N4CF
Louisa County, VA USA
Elecraft K-Line: K3s / P3 / KPA500 / KAT500
Carolina Windom up 45'
http://n4cf.mdodd.com
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