Wireless Standards
802.11b
802.11a
802.11g
popularity
widely adopted readily available
new
newest
Speed
11Mbps
up to 54 Mbps
up to 54Mbps
Cost
£-very inexpensive
££££- most expensive
££ - relatively inexpensive
Frequency
2.4GHz
5GHz
Range
100-150ft
typical range indoors depending upon building structures
25-75ft
lower range reflecting the higher frequency
Public Access
many access points available
none known
compatible with 802.11b and new nodes expected to use 802.11g
Compatibility
widest adoption
compatible only with 802.11a
compatible and interoperable with 802.11b and 802.11g