PCS (Personal Communication Systems) is the generic name for new digital cellular networks that are being rolled out throughout North America.

• The US FCC has been auctioning off the proposed frequencies since 1995.
• Pacific Bell (PacBell) was the first PCS network in the US (1995).
• There are a number of standards in use, including IS-94.
• The PCS frequency band is 1850 to 1990 MHz.
• This includes three 30 MHz allocations (15 MHz in each direction), three 10 MHz allocations, and 20 MHz for unlicensed use.

They are:

• A: 1850-1865 MHz and 1930-1945 MHz
• B: 1870-1885 MHz and 1950-1965 MHz
• C: 1895-1910 MHz and 1975-1990 MHz
• D: 1865-1870 MHz and 1945-1950 MHz
• E: 1885-1890 MHz and 1965-1970 MHz
• F: 1890-1895 MHz and 1970-1975 MHz

• Unlicensed: 1910-1930 MHz.