Re: [KX3] ADC/DAC access, keyer input

Posted by gmaxwell on
URL: http://elecraft.85.s1.nabble.com/KX3-ADC-DAC-access-keyer-input-tp6703089p6703291.html

Tony Estep wrote

IF output connected over USB? Maybe you mean a BNC,

No. I mean USB, as in digital output, as is found on the USRP (for example).

I see no attraction in yet another analog step that is only going to add noise and interference, complicate PTT and control signaling,  and leave me with a mess of more cables and boxes in order to interconnect it.  (What netbook has stereo inputs? what netbook has inputs that aren't full of spurious tones from the computer?)

Conceivably the KX3 could be trickle charged (500ma at 5v) via a USB client connection, meaning a complete computer-enabled mobile station could be [antenna]-[kx3]-[netbook]-[power] which would be clean indeed.

There's zero to be gained by having an outboard SDR box that would duplicate
the down-conversion circuits in the KX3. My bet is that Elecraft would do a
better job with that circuitry than today's SDR makers.

Exactly.