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Ka-Band
The frequency range from 18 to 31 GHz. The spectrum allocated for satellite communication is 30 GHz for the up-link and 20 GHz for the down-link.

Kernel
The central module in an operating system that controls such essentials as security and resource allocation.

Kilobyte
This is a measure for 1,000 or 1,024 bytes.

Kilohertz (kHz)
This is a measure of a unit of frequency equal to 1,000 Hertz.