Wireless Definition and Solutions

"Individuals with radios in the field could interconnect with the telephone system even when their cell phones are shut down by an emergency," he says. This would be useful in all manner of disasters, from natural to man-made.

Hays claims his research efforts wouldn't be possible if he wasn't a licensed amateur radio operator -- or "ham," the term he and his fellow hobbyists use to describe themselves. He says ham radio gives him "space and a choice of spectrum [in which] to experiment." He also values the hobby's largely self-policing regulatory structure and close-knit user community. "There are many others who would share your passion and provide [a] great opportunity for brainstorming and support," says Hays, whose ham call sign is K7VE.

For IT professionals, ham radio can foster skills that are translatable into real-world wireless and wired networking applications.

Hays says his hobby and profession have long been intertwined. His experimentation with TCP/IP over AX.25 (a ham-oriented data link layer protocol) on the radio in the late '70s and '80s "helped me understand the inner workings of networking protocols and the use of wireless transports," he says. "From this, I was able to write some widely read and popular internal papers on subjects such as TCP/IP over Ethernet verses token passing ring topology."

Ham radio at a glance

* Number of U.S. amateur radio licensees: 650,000

* Number first licensed in the past four years: 100,000

* Number estimated to be licensed in 2009: 25,000 to 30,000

Source: American Radio Relay League, Newington, Conn.

More recently, Hays used his ham knowledge to implement several RF-networked warehouse management systems. "My knowledge of radio transmission, combined with networking [skills], optimized the placement of base stations and mobile units," he says.

Reviving innovation

Decades ago, amateur radio operators were on the forefront of scores of technological innovations, including television, digital communications, solid-state design and cellular networks. The hobby's roots trace back to radio pioneers such as Guglielmo Marconi and FM-inventor Edwin Armstrong.

But in recent years, as many potential new hams were attracted to computers, the Internet and other technologies that they could explore without passing a licensing exam, some veteran hams worried that ham radio was at risk of gradually sliding into stagnation and was perhaps even on the road toward technological irrelevance. Over time, many old-timers worried, experimenters would gradually be replaced by hams more focused on the hobby's operational aspects, such as restoring antique radios and providing communications services for community parades and other charity events.