Check the DATA Sub-mode. You may be thinking AFSK but the software may reset to 
FSK D and that doesn’t require audio into the sound system. 

In the TX monitor, Do you hear diddles or just a single tone?

Sent from my iPhone
...nr4c. bill


> On Nov 19, 2018, at 10:26 PM, Martin Sole <[email protected]> wrote:
> 
> Can anyone help with a quick DATA mode problem.
> 
> I've always used AFSK but it seems to have stopped working on transmit. I can 
> set DATA A and then send audio from the PC into the radio. It transmits fine, 
> no problem. Just switching to data mode AFSK and then sending audio. the vox 
> operates as before but no modulation, no output.
> 
> In summary, RX works fine both modes
> TX works fine in DATA A
> TX does not work other than trigering VOX in AFSK A.
> 
> Nothing else changes other than the mode on the front panel. Line in, level 
> all set the same.
> 
> Figure I must be doing something dumb.
> 
> Any help?
> 
> Thanks
> Martin, HS0ZED
> 
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