Cellular phones, including Personal Communication Service devices, may seem like one of the newest land mobile services, but the idea of a mobile radio telephone has been around for quite a while. In the early 1920s both the Marconi company and the Bell Laboratories were testing car-based telephone systems. Bell Labs believes its 1924 system was actually the first two-way, voice-based radio telephone. Other predecessors to today’s cell phones included the radio telephones used by the military during both World Wars. The science behind cell phones, as we know them today, was clearly known by 1945 as evidenced by a Saturday Evening Post article, “Phone Me by Air,” which quoted FCC Commissioner E.K. Jett on frequency reuse for “small zone systems.” He said, “In each zone, the…frequencies will provide from 70 to 100 different channels, half of which may be used simultaneously in the same area without overlapping.”