[Elecraft] K3 Popping noise in headphones??

[Jim Brown]

On Fri,10/16/2015 11:15 PM, Jim Bolit wrote:
> The popping is present as I rotate the BW control back to wider bandwidths also, but the popping stops once above 200 Hz bandwidth.

Hi Jim,

I also do a lot of digging for weak signals, but I rarely go narrower 
than 200 Hz because I find the filter ringing on noise takes over. Yes, 
I'm using the optimal setting to minimize ringing.

If you're hearing the popping and others are not, perhaps you're using 
more AF gain and less RF gain than they are. If so, I suggest adjusting 
that ratio in the direction of less AF gain and see if you can reach a 
happy compromise. As an OT CW op, I do recognize the virtue of not using 
excessive RF gain.

And maybe Wayne can do something about the switching transient in a 
future firmware firmware release.

73, Jim K9YC