[Elecraft] K3: elaborate on the DSP at AF

[DOUGLAS ZWIEBEL]

Wayne, Eric, most likely Lyle:

I have noted TONS of references to "DSP" on the FAQ but all of them
appear to apply to the DSP at IF.

What does the DSP at AF do (capability)?
Is the LMS NR at IF or AF?

I do note this section from the FAQ which is otherwise undefined (IF vs AF):
"There are on the order of 100 specialized DSP commands, including
those for setting up arbitrary filter bandwidths and center
frequencies. "

Is this the AF DSP?

Thanks....
de Doug KR2Q