[Elecraft] [K3] K3 receiver noise questionable test results

[Julian, G4ILO]

Don Wilhelm-4 wrote:
> 
> 
> In the situation you describe, only a low pass audio filter would help - 
> it should be available soon.
> Perhaps some others are hearing the same thing, but have not described 
> it as well.
> 
> 
I'm not convinced, Don.

I'm looking at the output from the K3 using Spectran now. I can see
"spurious" signals on the trace in the 10KHz - 14KHz region *when other
signals are present*. But the noise floor of the K3 outside the selected
passband is actually much lower than other receivers. It's something like
60dB down on the level of noise within the passband going from 3KHz to
20KHz.

-----
Julian, G4ILO. K2 #392  K3 #222.
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune - http://www.g4ilo.com/ktune.html

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