[Elecraft] K3: Audio settings

[Don Wilhelm]

Josh,

Yes, the K3S has some improvement to the audio in that there is an extra 
gain stage that distributes the audio gain a bit better.  I do not 
consider it worthwhile for my K3 - the DSP board would have to be 
replaced.  There was a change to the K3 DSP board much earlier that 
added a low pass filter as well as lower frequency audio response to the 
original K3 audio.  For a time, there wa a DSP board swap program to 
upgrade the DSP board, but that has now been retired, but you can still 
purchase the low pass filter add-on.  If you have the Rev D DSP board, 
it is already installed.

The new synthesizer will get you the most "bang for the buck" 
improvement in the K3 RF performance, and the new KXV3B adds the 20 dB 
preamp for 17 meters and above.  The KIO3B can add the USB interface 
rather than the RS-232 as well as an internal soundcard.

73,
Don W3FPR

On 9/3/2018 10:56 AM, Josh Fiden wrote:
> I have two original K3. Wondering if I missed something. The "S" has improvements to receive audio? Or is this just referring to the new synthesizer?
>