I tried this firmware yesterday and it curred some audio artifacts I was
hearing. My guess is that I was picking up some mixing artifacts from
the 12 kHz spur that made my KX3 audio sound somewhat harsh, almost
raspy. I especially noticed it with CW notes.
I emailed Wayne about this firmware release and he thought that it might
help - and it did. I wasn't able to do a side by side comparison, but I
did switch between firmware releases a few times and I could definitely
hear a difference. It now sounds warmer and more well rounded, similar
to my K3. It is a lot less fatiguing on my ears.
I told Wayne that I can't believe I can still hear stuff like this after
35 years or so in the fire service. Hopefully I can keep it that way.
Thanks to Wayne (and everyone else at Elecraft) for continually
improving the KX3 experience.
73,
Dave W8FGU
On 08/16/2013 11:54 PM, Wayne Burdick wrote:
Hi all,
We're putting the finishing touches on a KX3 field-test firmware release that
eliminates the 12-kHz audio spur reported earlier this week. I can't hear it,
myself, but I can see it on my spectrum analyzer. In our lab tests the spur is
knocked down into the noise -- around 20 dB reduction. Hopefully this will do
the trick.
The fix we implemented is an improvement on turning on the RX I/Q menu entry.
The new method only increases current drain by 3 to 4 mA, while setting RX I/Q
to ON increases current drain by about 10-15 mA.
This release also includes corrected "Weaver-mode" SSB receive demodulation
(greatly reduced opposite-sideband image), and all of the ATU tuning improvements
mentioned earlier.
If you've been bothered by either the Weaver demod issue or the 12-kHz spur,
please email me directly so I can send you the new code.
If you sent me a request earlier, and didn't get it yet, that's because I was
making further improvements. You're still on my list.
tnx
Wayne
N6KR
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