Butch:

The number keys which switch directly to each band have three settings.

I believe these are called band stacking registers.  In effect, buy default, 
one is for the cw segment, one for ssb segment, and another for other 
segments.  Therefor, as in your example, the 2 key pressed has three 
settings.

If memory serves, one was set for cw mode in the cw segment, one and the 
other two were in the phone segment and in ssb.

So, its a case of remembering what you want to do which tells you how many 
times to press the 2 key to get near where you want.

Does this help?
----- Original Message ----- 
From: "Butch Bussen" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, June 22, 2011 4:40 PM
Subject: 590 question


>I don't have a clue  how I got there, but when I push number 2 to go to
> 75, the two knobs change high and low cut on sideband.  When I press the 5
> key to go to 20, they are shift and width?  What changes this?
> 73
> Butch
> WA0VJR
> Node 3148
> Wallace, ks.