V band
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The V band (vee-band) of the electromagnetic spectrum ranges from 50 to 75 GHz. The V band is not heavily used, except for millimeter wave radar research and other kinds of scientific research. It should not be confused with the 600–1000 MHz range of Band-V (band-five) of the UHF frequency range.
The V band is also used for high capacity terrestrial millimeter wave communications systems. In the United States, the Federal Communications Commission has allocated frequency at 60 GHz for unlicensed point-to-point fixed wireless systems. These systems are primarily used for high capacity, short distance (less than 1 mile) communications. In addition, frequencies at 70, 80, and 90 GHz have been allocated as "lightly licensed" bands for multi-gigabit wireless communications. All communications links in the V band require unobstructed line of sight between the transmit and receive point, and rain fade must be taken into account when performing link budget analysis.
| Electromagnetic Spectrum Sorted by wavelength, short to long Gamma ray | X-ray | Ultraviolet | Optical spectrum | Infrared | Terahertz radiation | Microwave | Radio waves | Visible (optical) spectrum: Violet | Blue | Green | Yellow | Orange | Red | Microwave spectrum: V band | K band: Ka band, Ku band | X band | C band | S band | L band | Radio spectrum: EHF | SHF | UHF | VHF | HF/Shortwave | Mediumwave | Longwave | VLF | ULF |SLF | ELF |