I had the same issue with my newest K3, so I had a basis to compare to another K3. Wayne put on his phone engineer hat and designed a circuit mod that reduced gain to an IF transformer, a resistor change. I can't imagine this kind of service from any other company - amazing.
Since then they have been working on a provision in the utility program that will achieve the same effect, using only the firmware. Gotta love SDR. It's in the release notes but not quite ready AFAIK.
[Elecraft] K3 S-Meter and Noise
Jim Harris w0em at q.com
Thu Sep 24 11:18:33 EDT 2009
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Hi All,
I've had my new K3 up and running for about a week after replacing the DSP board during assembly due to the 5vdc rail being shorted to ground. The S-meter shows about S-2/3 noise and there is about an equal level of noise from the speaker. I have an IC-756ProIII sitting beside it and it shows S-0 with minimum noise from the speaker. Of course, I'm using the same mode and have set the filters in both to the same width. I have played with the preamp and attenuator in both and the K3 always shows a higher noise level with accompanying S-meter reading.
My K2 is extremely quiet and does just great on the many portable trips I take. I may well be missing something on the K3 in all the myriad menu settings of the K3 but don't have a clue at this point as to how to proceed. I sure don't want to think this $2000 radio has such a noise problem and I'm going to have to live it. Does anyone have any information that may help? I would be most appreciative.
Thank you, have a good day and 73.
Jim, W0EM
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