–A band set up
for independent carriers
–B band set up
for traditional wireline carriers, such as the Regional Bell Operating
Companies (RBOC)
–idea was to ensure competition in all markets,
while restrict potential proliferation of companies that would complicate
spectrum allocation/management
–today, many independent
carriers bought by RBOCs, so it is not uncommon to have one company
operating in Band A in one market and Band B in another
market
–channels
always come in pairs, spaced 45 MHz apart