M band (NATO)
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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 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) | |||
| 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) | |||
| Band V 582–862 MHz (TV) | |||||||
| 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 | ||||
| H | 6 000 – 8 000 | X | 6 200 – 10 900 | ||||
| I | 8 000 – 10 000 | ||||||
| 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 | ||||
| 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 | ||||||
