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. :)
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