There seems to be some confusion here between repeater offset (typically 12.5kHz to 25kHz for VHF, 5MHz for UHF), and tuning step (typically between 2.5kHz and 25kHz). They are not related.

On 2013-08-30 09:59, chris@engravedimage.com wrote:

That's the standard offset for UHF repeaters. that's usually selected, 
because different states have different standards. For example, in Ohio, 
simplex and repeater "channels" (for lack of a better word) are 15 KHz 
apart. In Michigan, they are usually 20 KHz apart.  5KHz plays nice with 
both.


On 2013-08-30 09:58, Pat Anderson wrote:

Trump me if I am mistaken, but the usual step value in the US is 5 
mhz.

On Thu, Aug 29, 2013 at 9:14 PM, Mike Morrow
<mike@primecareercollege.com> wrote:

The step is the channel spacing amount.  You can set this on many 
radios from 25 to 2.5 MHz.  When you turn a tuning know in VFO mode, 
this is the amount the radio changes frequency by.