[Elecraft] K3s USB sound card not receiving MMTTY audio

[Wes]

Does the tone in MMTTY match the tone set in the K3?

Wes  N7WS

On 1/8/2022 7:31 PM, Mike Dodd wrote:
> I have had the built-in SUB sound card in my K3s working with MMTTY in AFSK A 
> mode in the past, but now it does not produce TX tones when MMTTY transmits.
>
> MMTTY is set up to use the USB Audio Codec in RX and TX, and can decode RTTY 
> signals. When I click the TX button, the K3s goes into transmit, but produces 
> no output (ALC is zero).
>
> If I set MMTTY's Transmission sound card to the PC's built-in speakers, I hear 
> the tones when transmitting, so MMTTY is producing them. It just doesn't send 
> those tones to the K3s USB sound card.
>
> What am I missing? Again, this has worked many times in the November 2021 WAE 
> RTTY contest.
>
> Thanks.
>
> --- Mike N4CF
>