[Elecraft] AFSK-A with K3s

[Wes]

Make sure the TX mark frequency in MMTTY is the same as what you've chosen in 
the K3.

On 4/13/2016 7:11 AM, Mike Dodd wrote:
> Thanks to all who replied off-list to my question about choosing a Mark 
> frequency. Now on to a new question....
>
> Last night I was receiving RTTY using MMTTY and the AFSK-A mode on the K3s. 
> This morning I am trying to get the K3s to transmit, but not having much luck.
>
> I'm using the internal USB sound card in the K3s. I have successfully 
> configured MMTTY to:
>
> 1. Receive and decode tones from the sound card.
> 2. Key the K3s when I click the TX button in MMTTY.
> 3. Send tones to the K3s when the TX button is clicked. I can hear the tones 
> in the K3s speaker and headphones. If I choose a different Mark frequency in 
> MMTTY, I hear the expected tones on the K3s.
>
> Clearly audio tones are being sent to the K3s. But no RF comes out. I have PWR 
> set to 50W (into a dummy load), and when I hold TUNE, the RF bar graph shows 
> that power level (half scale, 5 bars).
>
> But when I click TX in MMTTY, and hear the tones on the K3s, the RF bar graph 
> shows 0 (one bar).
>
> What must I do to make the K3s transmit the audio it's receiving from MMTTY?
>
> Thanks in advance.
>