[Elecraft] Data troubles

[Joe Subich, W4TV]

Martin,

Please check the "PITCH" setting vs. the mark tone generated by
your AFSK software.  The K3/K3S contains a very narrow audio
filter on the input audio (CONFIG:AFSK TX).  If the AFSK TX
filter is ON and your software does not match the K3 PITCH you
will see the behavior you describe.

73,

    ... Joe, W4TV


On 2018-11-19 10:26 PM, Martin Sole 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
>