The J band is the range of radio frequencies from 10 GHz to 20 GHz in the electromagnetic spectrum. This is equal to wavelengths between 3 and 1.5 centimetres (1.2 and 0.59 in). The J band is in the SHF range of the radio spectrum.
The J band intersects with the X band and K band of the older classification system. The Ku band is within the J band.
in the United Kingdom, the term "J Band" is also used by the Joint Radio Company to refer to their VHF communications band at 139.5-140.5 and 148-149 MHz used by fuel and power industries.
Read more about J Band: Infrared Astronomy, Uses
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