[Elecraft] K3 Notch control

[Dave G4AON]

While on the subject of the K3 notch, the notch is quite crude compared
to the capabilities of the notch in my SDR receiver. I accept the SDR
has a powerful PC to assist, but the K3 notch is lacking in the
following areas:

On the 80m QRP frequency there is an annoying carrier often present some
70Hz or so above 3560 KHz, my database gives it as Radio Korea. The K3
notch cannot remove the carrier without impacting on any station calling
on 3560. That might seem like a tall order, but the notch in the SDR is
around 70 dB deep and only a few Hz wide at it's narrowest setting. In
addition it is of adjustable width. The SDR removes the carrier
completely without any noticeable impact on a station on 3560.

The K3 notch only sets in 20 Hz steps and is of a fixed width that is
quite wide. Any chance of a review of the K3 notch and it's capabilities?

73 Dave, G4AON
K3/100 #80