L band (disambiguation)

L band may be used to designate one of four different bands of the electromagnetic spectrum:

1 to 2 GHz: L band, as defined by the IEEE
40 to 60 GHz, L band (NATO) as defined by NATO for ECM systems. See EU, NATO, US ECM frequency designations
3.5 micrometres, an atmospheric transmission window used in infrared astronomy
1565 nm to 1625 nm, a transmission window in fiber-optic communication

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