Scanner Master Police Scanners Corporation was formed in 1978 and since that time has been producing the nation's most comprehensive communications guidebooks including Scanner Master regional volumes and Monitor America. Richard Barnett of Scanner Master Police Scanners also edited Police Call, the 7-volume regional frequency guide series that went out of production in 2005. For the past 20 years, Scanner Master Police Scanners has been a consultant to the scanner-radio industry. We participated in the design and development of the industry's first trunktracking scanner, as well as many later models.