Brand: Whistler. MPN: WS1010. The Whistler Scanner is handheld and can store up to 200 of your favorite frequencies. This model features Data Cloning with other WS1010 models and PC-updatable database capabilities. You can easily locate types of calls by searching pre-programmed frequencies in separate marine fire/police aircraft ham and weather banks. The dedicated Skywarn button on the handheld scanner allows quick access to frequencies used by storm spotter networks. Additionally this item features Whistler s Spectrum Sweeper a powerful tool that helps to rapidly detect monitor and store new frequencies. It is made for premium performance and long-lasting use. It conveniently delays scanning for two seconds before moving to another channel in order to hear replies. It also has a lock-out function that allows you to skip over specified channels or frequencies when scanning or searching.