Radio spectrum refers to the whole range of radio frequencies. A higher frequency means the signal (radio wave) oscillates faster, like a higher-frequency sound wave.

How to Program Frequencies Into a Uniden Bearcat Scanner. Radio-frequency scanners check for active radio communications in your immediate area.

The guide features 24-hour station/frequency guide with schedules for selected AM band, longwave, and shortwave radio stations; hourly schedules for all language services, frequencies, and world ...

The 18th edition also includes its usual 24-hour station/frequency guide with schedules for selected AM band, longwave, and shortwave radio stations. Plus, listings of DX radio programs and Internet ...

For newcomers wanting to know more about what is ham radio, our outdoor expert's guide will tell you everything you need for this neat hobby.