Ricochet Advisory: Atlanta Construction Progresses.

Business Editors/High-Tech Writers

LOS GATOS, Calif.--(BUSINESS WIRE)--May 3, 2000

Metricom, Inc (Nasdaq:MCOM) today advises that its Ricochet Network Interface Facility (NIF) in the Atlanta service area has been constructed, and several Wired Access Points (WAPs) are currently being built. In the next few weeks, local residents should begin seeing crews in bucket trucks installing microcell radios, also known as poletops, on streetlight and utility poles.

Ricochet is principally comprised of subscriber wireless modems, intelligent routing microcell radios, WAPs and NIFs.

Ricochet Advisories are intended to update the industry regarding Metricom's progress toward delivering on the promise of high-speed mobile wireless access.

About Ricochet

At performance levels rivaling wired connections, Ricochet provides mobile wireless access to corporate networks and the Internet at speeds of 128 kbps and higher, with flat-rate pricing, always on connections, and full access to all things Web. Available through Authorized Service Providers, Ricochet sets you free from the office.

About Metricom

Metricom, Inc. is a leading provider of mobile data networking and technology. The Company's Ricochet service provides mobile professionals with high-performance, cost-effective untethered access to the Internet, private Intranets, local-area networks, e-mail, and other online services. Ricochet is generally available at speeds up to 28.8 kbps in the greater San Francisco Bay Area, Seattle, and Washington, D.C. metropolitan areas. Metricom is currently under construction in 21 major service areas to bring its higher speed Ricochet 128 kbps network to market, ultimately deploying a network in 46 markets covering 100 million in population. For more information, visit Metricom's Web site at http://www.metricom.com.