[Elecraft] [KX3] USB sound card functionality in the future?

[Dave Hartzell]

Thanks Don.  Maybe someday it will be supported on the KX3-S  (or whatever
the follow-on will be called).



On Fri, Dec 30, 2016 at 3:21 PM, Don Wilhelm <donwilh at embarqmail.com> wrote:

> Dave,
>
> First of all, the audio for digital operations needs to come from the
> phones and mic lines.  The RX I/Q is taken off before any DSP Processing so
> the bandwidth is not restricted by the filtering done in the KX3.  In other
> words, the RX I/Q is not simply audio - it may be at baseband, but it is
> not the audio output of the KX3 - the post filtering audio and the
> pre-filtering baseband signals come from two different points in the
> receive chain and would have to be switched depending on whether you wanted
> a panadapter application or a digital mode application.
>
> 73,
> Don W3FPR
>
>
>
>
> On 12/30/2016 5:03 PM, Dave Hartzell wrote:
>
>> Interesting...  Not knowing much about the architecture, isn't most of the
>> hardware already on board to send samples out the USB?
>>
>> Looking at the KX3 block diagram [1], I'm curious why you couldn't move
>> digital I/Q samples from the DSP to the PIC, then in/out to the USB port.
>>
>> While I'm sure the existing I/Q port would work for me, its always nice to
>> be lazy and use one cable.  :)
>>
>>