Have you got VFO NR enabled? Not sure, but maybe this is causing the effect you 
are observing.

If you turn VFO NR off, and get "tuning noise", then take a look at this 
application note:
http://www.elecraft.com/manual/KX3%20Tuning%20Noise%20Mod%20rev%20B3.pdf

If you have the latest firmware, then enabling RX SHFT=8kHz no longer prevents 
you from using Dual Watch feature, although it will prevent use of the roofing 
filter. As you get experience with the radio you'll work out the optimum 
settings under various conditions.

73, Matt VK2RQ. 


> On 20 Nov 2014, at 2:15 am, Wouter Jan Ubbels <[email protected]> wrote:
> 
> Hi all,
> 
> Whenever I tune my KX3 and there is a strong station nearby, the audio goes
> low, it sort of sounds like the receiver is being blocked by the strong
> station, or the gain is reduced automatically. As I stop tuning, the audio
> comes back up to the original level.
> I tried switching off the AGC which was the first thing that came to mind,
> but the behaviour stays the same.
> I am using DSP firmware rev 1.30 and MCU firmware rev 2.23, and have the
> roofing filter installed.
> Any clues as to what I may be seeing with this otherwise great rig?
> 
> 73,
> 
> Wouter Jan Ubbels PE4WJ
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