[Elecraft] K3 Filter question - SSB

[John Oppenheimer]

Interesting to me is position today that 2.1 kHz is narrow. For many
decades, a 2.1 kHz filter was normal, and sometimes only SSB filter.

    Heathkit SB-101 etc 350 - 2450 (center 1400)
    Collins KWM-2A etc  400 - 2500 (center 1450)

Sometime during the 90s, or so, the standard seemed to move to 2.4 kHz
and up. What happened?

Because of my early experiences with a SB-101, I decided that the Heath
SSB BW settings were for me. Therefore I have a 2.1 kHz roofing filter
installed and set the BW to 350 - 2450 and stored into NORM1.

Which leads into a K3 issue. I believe that it would be a service to all
of us users if the K3 manual had a set of optimal center frequencies for
some of the pseudo standard settings optimized by those before us at
Heathkit, Collins, and others.

And it would be nice if the NORM button was programmable. I understand
that there are the NORM1 and NORM2 settings, but for me, simple NORM is
a wasted SSB button as I never use a 100 - 2900 Hz BW.

And it would be nice if there was a default SSB center for each of the
filters in Filter configuration. Tapping XFIL would not only move to the
next filter, but also set to it's optimal SSB filter center frequency.

John, KN5L