The

NATO The North Atlantic Treaty Organization (NATO ; , OTAN), also called the North Atlantic Alliance, is an intergovernmental organization, intergovernmental Transnationalism, transnational military alliance of 32 Member states of NATO, member s ...

H band is the obsolete designation given to the radio frequencies from 6,000 to 8,000

MHz The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), often described as being equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose formal expression in terms of SI base u ...

(equivalent to

wavelength In physics and mathematics, wavelength or spatial period of a wave or periodic function is the distance over which the wave's shape repeats. In other words, it is the distance between consecutive corresponding points of the same ''phase (waves ...

s between 5 and 3.75 cm) during the Cold War period. Since 1992, frequencies have been allocated, allotted, and assigned in accordance with the NATO Joint Civil/Military Frequency Agreement (NJFA).''NATO Joint Civil/Military Frequency Agreement (NJFA)''
/ref> However, in order to identify military radio spectrum requirements (e.g., for

crisis management Crisis management is the process by which an organization deals with a disruptive and unexpected event that threatens to harm the organization or its stakeholders. The study of crisis management originated with large-scale industrial and envi ...

planning, training, electronic warfare activities, or

military operations A military operation (op) is the coordinated military actions of a state, or a non-state actor, in response to a developing situation. These actions are designed as a military plan to resolve the situation in the state or actor's favor. Operatio ...

), this system is still in use.

References

Radio spectrum Microwave bands {{Wireless-stub