A wireless Internet service from Metricom, Inc., Los Gatos, CA. It uses appoximately 100 small "microcell" radio transceivers attached to utility poles within a 20-square mile cell. Each cell has one wired access point, which is a sp-q, frame relay connection to the Internet. Each microcell bounces digital signals from the mobile devices to other microcells and eventually to its wired access point. The transceivers in this MicroCellular Data Network (MCDN) employ 162 frequency-hopping channels in the 902-928MHz band from user to microcell. The 2.4GHz band is used in the rest of the system, and licensed spectrum in the 2.3GHz band is used for its high-speed service. Rocochet modems attach to laptops and other handhelds via the serial port. Ricochet 1 provides 28.8 Kbps service with access primarily to stationary users, while Ricochet 2, introduced in 2000, offers 128 Kbps for the commuter in transit. First deployed in Washington, DC, Seattle and Silicon Valley, coverage in more than 40 urban areas is expected by 2002.