On Sat, 10 May 2008 03:43:11 GMT "Michael" <michael@yahoo.com> wrote:

> > If Optus' claims that 900 Mhz is the way to go versus Telstra's
> > 850Mhz, maybe it will end up providing better coverage.
>
> The lower the frequency for UMTS, the better the spread of coverage.
> However, the higher, the better the inbuilding penetration


So what is the optimal frequency for spread and "penetration"?