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Abstract
Radio's transition to digital transmission is well underway worldwide, with both terrestrial and satellite-based systems in operation. However, although most of the world implemented the terrestrial broadcast system known as Eureka 147, U.S. broadcasters swam against the global tide. The National Association of Broadcasters advocated adoption of the In-Band On-Channel (IBOC) system, which the Federal Communications Commission (FCC) ultimately approved as the U.S. standard, in the face of considerable engineering evidence that Eureka 147 was technologically superior. The NAB and FCC actions reflect the differing social, economic, and political currents in the U.S. context, and demonstrate that technological diffusion may depend largely on what causes the least disruption to existing industrial structures.
