The RF Spectrum Tutorial

Frequency Range	Classification
3 - 30 kilohertz30 - 300 kilohertz 300 - 3000 kilohertz (3 megahertz) 3  - 30 megahertz 30 - 300 megahertz 300 - 3000 (3 gigahertz) 3 gigahertz - 30 gigahertz 300 - 3000 gigahertz	Very low frequencies (VLF) The long wave band (LW) The medium wave band (MW) The short wave band (SW) Very high frequency band (VHF) Ultra high frequency band (UHF) Super high frequency band (SHF) Microwave frequencies

Higher in frequency than this are infra red, visible light, ultra violet, X rays etc. which are all forms of Electro Magnetic radiation.