[Elecraft] Elecraft USB interface.

[Don Wilhelm]

I believe the question was about using an interface box (with integral 
soundcard) for digital modes.  That application does not need a great 
soundcard or a wide frequency response.

Those wanting a panadapter display using the I and Q outputs from the 
KX3, then a good quality soundcard is a real benefit, not only in 
bandwidth, but in the noise floor of the soundcard.

For digital modes, the headphone output and the mic input are used, and 
they are not wide range (limited to about 3 kHz).  The I/Q outputs have 
a much greater range.

73,
Don W3FPR

On 2/10/2013 4:18 PM, Jeff Herr wrote:
> If you want your panadapter to sample and display a properly I would think
> most folks would ASSUME some signal fidelity was in order.
>
> Most don't care about freq response.....i guess they dont expect much when
> they use hrd or dm780 or nap3 etc.
>