"Larry Fortune" <larryefortune@comcast.net> wrote in message news:<9ZTLb.14302$5V2.20501@attbi_s53>...
> GREAT Map....now for a stupid question...what is the difference between side
> A and B?...I have never understood that.
When the cellular spectrum was licensed in the early 80's, it was
split into two chunks of equal size (25 MHz each) and each chunk (one
of which is known as the A-side license and the other one as the
B-side license) was licensed independently to different companies to
spur competition and accelerate buildout and growth of the network.
Originally, the B-side license was given to the incumbent local
telephone company and the A-side license was auctioned off to the
highest bidder. Due to license aggregation, dis-aggregation, mergers,
and aquisitions, this distinction no longer exists and most major
wireless carriers hold both A-side and B-side licenses in different
markets.
In fact, out of the top 9 cellular carriers, 6 hold both A-side and
B-side licenses (VZW, Cingular, ALLTEL, USCC, Dobson, and RCC) whereas
3 only hold A-side licenses (ATTWS, WWCA, and Centennial). For
details on the frequency assignments for A-side and B-side see
http://tk.com/wireless/