[Elecraft] K3S vs. K3

[Mike Harris]

It has so far been assumed that the KIO3B somehow has an analogue to 
digital conversion function (sound card) feeding the USB interface.

Looking at the K3 block diagram shows a mysterious KDV3 (Dig. Audio) 
within the DSB environment.  KDV3 nomenclature would lead one to assume 
it was a module of some sort.  I've so far not been able to determine 
from the alphabet soup on the DSP board schematics where a KDV3 might 
interface with the DSP.  This might offer a clue as to how the digital 
audio presented on the USB interface is derived.

Sherwood has previously commented unfavourably on the audio quality of 
the LINE OUT signal.  This has lead to the general acceptance that the 
LINE OUT level should be limited to 8-10.

When the KIO3B module manual becomes available questions might be 
answered.  Or maybe, someone in the know might offer enlightenment. 
Enquiring minds and all that.

Regards,

Mike VP8NO