Scanners are hand held radio receivers that can be programmed to pick up specific frequencies. These frequencies are often radio channels used by local emergency services, citizens band radio, railroads or airports, listened to by hobbyists, journalists and others. Radio Shack has been a leading producer of electronics, such as scanners, since 1921. Learning how to use a Radio Shack scanner can keep you informed about local events as they occur and even provide entertainment. Writer Bio
