⁹. This misperception has been fed to a large extent by misleading comments from some purveyors of alternative technological solutions for the airlink. It seems that as technology advances, there are increasing opportunities for apples-to-oranges comparisons by ”technologists” with agendas. It is our hope that this book will clarify some of the misperceptions about mobile systems in general and CDPD in particular that have been propagated over the past few years.