M band
Frequency range | 60 - 100 GHz |
|---|---|
Wavelength range | 5 – 3 mm |
Related bands |
| ITU radio bands | ||||||||||||
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| EU / NATO / US ECM radio bands | ||||||||||||
| IEEE radio bands | ||||||||||||
| Other TV and radio bands | ||||||||||||
M band can refer to two different regions of the electromagnetic spectrum, in the radio and near-infrared.
Radio
The NATO M band is the obsolete designation given to the radio frequencies from 60 to 100 GHz (equivalent to wavelengths between 5 and 3 mm) during the cold war period. Since 1992 frequency allocations, allotment and assignments are in line to NATO Joint Civil/Military Frequency Agreement (NJFA).[1]
However, in order to identify military radio spectrum requirements, e.g. for crises management planning, training, Electronic warfare activities, or in military operations, this system is still in use.
The NATO M band is also a subset of the EHF band as defined by the ITU.[2] It intersects with the V (50–75 GHz) and W band (75–110 GHz) of the older IEEE classification system.[3]
| NATO Radio spectrum designation | ||||
| LATEST SYSTEM | ALTERNATIVE SYSTEM | |||
| BAND | FREQUENCY (MHz) | BAND | FREQUENCY (MHz) | |
| A | 0 – 250 | I | 100 – 150 | |
| B | 250 – 500 | G | 150 – 225 | |
| C | 500 – 1 000 | P | 225 – 390 | |
| D | 1 000 – 2 000 | L | 390 – 1 550 | |
| E | 2 000 – 3 000 | S | 1 550 – 3 900 | |
| F | 3 000 – 4 000 | C | 3 900 – 6 200 | |
| G | 4 000 – 6 000 | X | 6 200 – 10 900 | |
| H | 6 000 – 8 000 | K | 10 900 – 36 000 | |
| I | 8 000 – 10 000 | Ku | 10 900 – 20 000 | |
| J | 10 000 – 20 000 | Ka | 20 000 – 36 000 | |
| K | 20 000 – 40 000 | 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 | |
|---|---|---|---|---|
Infrared astronomy
In infrared astronomy, the M band refers to an atmospheric transmission window centred on 4.7 micrometres (in the mid-infrared).
References
- ↑ NATO Joint Civil/Military Frequency Agreement (NJFA)
- ↑ "V.431: Nomenclature of the frequency and wavelength bands used in telecommunications". ITU-R. 2006-01-04. Retrieved 2014-02-03.
- ↑ "521-2002 - IEEE Standard Letter Designations for Radar-Frequency Bands". IEEE. 2003-01-14. doi:10.1109/IEEESTD.2003.94224. Retrieved 2014-02-03. (subscription required (help)).
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