H band (NATO)

The NATO H band is the obsolete designation given to the radio frequencies from 6,000 to 8,000 MHz (equivalent to wavelengths 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).^[1] However, in order to identify military radio spectrum requirements (e.g., for crisis management planning, training, electronic warfare activities, or military operations), this system is still in use.

H	6 000 – 8 000	X	6 200 – 10 900
NATO LETTER BAND DESIGNATION^{[citation needed]}				BROADCASTING BAND DESIGNATION ^{[citation needed]}
NEW^[when?] NOMENCLATURE		OLD^[when?] NOMENCLATURE
BAND	FREQUENCY (MHz)	BAND	FREQUENCY (MHz)

A	0 – 250	I	100 – 150	Band I 47 – 68 MHz (TV)
		I	100 – 150	Band II 87.5 – 108 MHz (FM)
		G	150 – 225	Band III 174 – 230 MHz (TV)
B	250 – 500	P	225 – 390
C	500 – 1 000	L	390 – 1 550	Band IV 470 – 582 MHz (TV)
C	500 – 1 000			Band V 582 – 862 MHz (TV)
D	1 000 – 2 000
D	1 000 – 2 000	S	1 550 – 3 900
E	2 000 – 3 000
F	3 000 – 4 000
G	4 000 – 6 000	C	3 900 – 6 200
I	8 000 – 10 000	X	6 200 – 10 900
J	10 000 – 20 000	Ku	10 900 – 20 000
K	20 000 – 40 000	Ka	20 000 – 36 000
L	40 000 – 60 000	Q	36 000 – 46 000
L	40 000 – 60 000	V	46 000 – 56 000
M	60 000 – 100 000	W	56 000 – 100 000

US- MILITARY / SACLANT^{[citation needed]}
N	100 000 – 200 000
O	100 000 – 200 000

References

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v t e Electromagnetic spectrum
Gamma rays X-rays Ultraviolet Visible Infrared Microwave Radio ← higher frequencies longer wavelengths →
Gamma rays	Very-high-energy gamma ray Ultra-high-energy gamma ray
X-rays	Soft X-ray Hard X-ray
Ultraviolet	Extreme ultraviolet Vacuum ultraviolet Lyman-alpha FUV MUV NUV UVC UVB UVA
Visible (optical)	Violet Blue Cyan Green Yellow Orange Red
Infrared	NIR (Bands: J, K, H) SWIR MWIR (Bands: L, M, N) LWIR FIR
Microwaves	W band V band Q band K_a band K band K_u band X band C band S band L band
Radio	THF EHF SHF UHF VHF HF MF LF VLF ULF SLF ELF
Wavelength types	Microwave Shortwave Medium wave Longwave