the ts2000 behaves the same way with it's tuning speed/step control except it's function step not he ts2k instead of holding the button down :) and it is awesome
On Feb 3, 2013, at 7:52 AM, Howard Kaufman <[log in to unmask]> wrote:

> On the front panel for the 480, the 4th button from the left adjusts the 
> step size for the selector click knob.
> 
> I found that if I press it once and touch the tuning knob, all of a sudden I 
> have a nice slow tuning dial.  I had the internal menu set to 250, and this 
> combination was amazingly slow.  I pushed the internal menu 3 up to 1000, 
> and now I have a very nice tuning ratio.  Press the button for a low beep 
> and I can tune fast across a chunk of spectrum.
> 
> Just tap the button rather than hold it in.
> I wonder if this works because it works, or if it relates to an internal 
> menu setting?
> Others with the 480 can check it out.
> I wonder if the 570 and 590 behave in a similar manner?
> H T Kaufman MSW LCSW
> Adaptive Technology Instructor