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Also in the late 1980s, The FCC decided to extend the AM band to 1710 k Hz.

By the early 1970s, however, listeners were slowly discovering the FM band and migrated to it for its static-free, stereophonic broadcasts; by 1978, FM overtook AM as the most popular band.

Attempts to revitalize AM have netted little; AM Stereo was proposed in 1958 and introduced in 1982 to big fanfare; many car manufacturers began to integrate AM Stereo into their radio units, and KRQX-570 became the first local AM Stereo station in 1983.

Other local stations modified their formats to concentrate on news, country, rhythm and blues, or Spanish.

While KLIF posted incredible ratings during the 1950s and 1960s, others like KRLD and WBAP found successful programming niches that catered to older audiences.

The invention of the transistor, and subsequently the development of lightweight, portable radios, along with the inclusion of radios in cars, helped the reinvented band find a new audience with people on the go.