Archived from groups: alt.cellular.attws,alt.cellular.cingular (
More info?)
Hello Andrew (and all)-
Any word on when Oregon will 850Mhz GSM overlay? It's clearly not active
yet.
I say clearly not active because of the strong superiority of my TDMA AT&T
phones to the GSM phones I have access to.
-Dan
"Andrew Shepherd" <cinema@ku.edu> wrote in message
news:33e89561.0405091501.33f690a6@posting.google.com...
> "News Hounding" <newshoundingREMOVETHIS@earthlink.net> wrote in message
news:<6Qrnc.114$zO3.82@newsread2.news.atl.earthlink.net>...
> > Anyone know a third-party coverage map that shows AT&T's GSM1900 and
GSM850
> > coverage (separately)? Should one have a world phone that only features
> > GSM1900 in the U.S., one would like to know where specifically GSM1900
> > coverage is with AT&T (not GSM850).
> >
> > I am sure extensive research with their licenses for both cellular and
PCS
> > would show this answer, but a quick fix would be nice.
> >
> > Same for Cingular - do they have a map showing GSM1900 and GSM850
coverage
> > areas separately?
>
> Third-party coverage maps are not simple to produce. Other than
> required disclosure to the FCC regarding the satisfaction of certain
> construction requirements, actual Cellular or PCS RF footprint can be
> considered proprietary information. Wireless license maps, on the
> other hand, can be readily produced w/ information that is a matter of
> public record. On that latter count, you might find to your interest
> the site that XFF & I have created.
>
> http://www.wirelesswavelength.com/
>
> Specifically, the following license maps hosted by the site are most
> relevant to your question.
>
>
http://people.ku.edu/~cinema/wireless/cing-attws_800_850.html
>
http://people.ku.edu/~cinema/wireless/cingular_cel.html
>
http://people.ku.edu/~cinema/wireless/cingular_pcs.html
>
http://people.ku.edu/~cinema/wireless/attws_cel.html
>
> As Cellular construction requirements are area-based, deployed
> Cellular (800/850 MHz) coverage will closely mimic licensed coverage.
> Conversely, as PCS (1900 MHz) construction requirements are
> population-based, deployed PCS coverage will typically be confined to
> concentrations of permanent or transient population - only a small
> percentage of the licensed area.
>
> The Cingular PCS map represents not only PCS licenses held by SBC or
> BellSouth but also licenses controlled by Cingular affiliate Salmon
> PCS & licenses acquired from NextWave - many of the latter two of
> which are not yet in service.
>
> As for AT&TWS, the AT&TWS PCS map is a task of overwhelming complexity
> for me, hence is still yet forthcoming. However, it can be noted that
> anywhere AT&TWS has a Cellular license, it also has an overlying PCS
> license. Though the chronology is actually reversed, anywhere that
> AT&TWS has deployed GSM 850 it also has GSM 1900. The latter, on the
> other hand, is not necessarily true. In markets where AT&TWS controls
> the PCS A or PCS B 30 MHz license, it is not a Cellular incumbent,
> such that it lacks any 800/850 MHz spectrum.
>
> In the regulatory filing seeking FCC approval of the Cingular-AT&TWS
> merger, a combined coverage map was submitted that reflects the
> deployed Cellular & PCS footprints of both companies. Bill Radio has
> extracted that map from the filing & mirrored it on his site.
>
>
http://www.mountainwireless.com/cingular_att_coverage.htm
>
> Though no distinction is made between 800/850 MHz or 1900 MHz, the
> area-based construction of Cellular versus the population-based
> construction of PCS is relatively manifest even on the macro scale of
> the map.
>
> Lastly, if you have questions about GSM 850, GSM 1900, or GSM 850/1900
> deployment by either Cingular or AT&TWS in specific locations, please
> just ask. Above & beyond the maps, my knowledge of what spectrum is
> in operation where is fairly comprehensive.
>
> Andrew
> --
> Andrew Shepherd
> cinema@ku.edu
> cinema@sprintpcs.com
> http://www.wirelesswavelength.com/
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