Looking on Adobe Audtion, it says 15kHz. =Mike Erickson= On 6/12/06, John Burger <xlchief at yahoo.com> wrote: > > I can hear it (53 going on 70), but I thought it was suppose to be 17 kHz. > This is supposedly an off-shoot (or hack) of a system marketed in England > designed to keep kids from congregating around convenience stores, etc. > > John > > >