[Elecraft] RE: Does anyone miss passband tuning, audio notch on K2?

[Vic Rosenthal]

"George, W5YR" wrote:
> 
> Absolutely, Eddy! Either or preferably both would enhance the K2 an
> order of magnitude in operational capability in my experience. 

As you well know, an 'order of magnitude' means 10 times better!  I wouldn't go
that far.

I did try a version of PBT by setting all of my CW filters to the same passband
width, but with different BFO settings.  So instead of switching filters, I had
4-step discrete passband tuning.  I eventually decided to go back to the stock
setup, but I might try it again, this time with FL1 as a 1.5 KHz 'tuning' mode
and FL2-FL4 as 350 Hz 'working' modes.

> as I
> understand the basic operation of the K2, shifting the filter passband
> and altering its width with the twist of a knob, etc.  would not be
> feasible, if possible at all.

When you do CAL FIL, the firmware adjusts the PLL frequency to keep the pitch
the same as you move the BFO with respect to the filter passband.  So 'all' that
would have to happen to implement PBT would be to make this process occur in
real time as the (currently nonexistent) PBT knob was turned.

Vic K2VCO