2-millimeter band

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The 2 millimeter band is a portion of the EHF (microwave) radio spectrum internationally allocated to amateur radio and amateur satellite use. The amateur radio and amateur satellite band is between 134 GHz and 141 GHz. Amateurs operate on a primary basis between 134 GHz and 136 GHz, and on a secondary basis in the rest of the band. Also, amateurs must protect the radio astronomy service from harmful interference between 136 GHz and 141 GHz. The ITU's allocations are the same in all three ITU Regions.[1]

Frequencies of note

  • 134.928 GHz IARU Region-1 Calling frequency and center of narrowband activity

See also

Amateur radio frequency allocations

References

  1. ↑ "FCC Online Table of Frequency Allocations" (PDF). 47 C.F.R. Federal Communications Commission. June 2, 2011. Retrieved August 4, 2011. 
International amateur radio frequency allocations
Range Band ITU Region 1 ITU Region 2 ITU Region 3
LF 2200 m 135.7 kHz - 137.8 kHz
MF 600 m 472 kHz - 479 kHz
160 m 1.810 MHz - 1.850 MHz 1.800 MHz - 2.000 MHz 1.800 MHz - 2.000 MHz
HF 80 / 75 m 3.500 MHz - 3.800 MHz 3.500 MHz - 4.000 MHz 3.500 MHz - 3.900 MHz
60 m1 5.250 MHz - 5.450 MHz
40 m 7.000 MHz - 7.200 MHz 7.000 MHz - 7.300 MHz 7.000 MHz - 7.200 MHz
30 m2 10.100 MHz - 10.150 MHz
20 m 14.000 MHz - 14.350 MHz
17 m2 18.068 MHz - 18.168 MHz
15 m 21.000 MHz - 21.450 MHz
12 m2 24.890 MHz - 24.990 MHz
10 m 28.000 MHz - 29.700 MHz
VHF 6 m 50.000 MHz - 52.000 MHz1 50.000 MHz - 54.000 MHz 50.000 MHz - 54.000 MHz
4 m1 70.000 MHz - 70.500 MHz
2 m 144.000 MHz - 146.000 MHz 144.000 MHz - 148.000 MHz 144.000 MHz - 148.000 MHz
1.25 m 222.000 MHz - 225.000 MHz
UHF 70 cm 430.000 MHz - 440.000 MHz 420.000 MHz - 450.000 MHz3 420.000 MHz - 450.000 MHz3
33 cm 902.000 MHz - 928.000 MHz
23 cm 1.240 GHz - 1.300 GHz
13 cm 2.300 GHz - 2.450 GHz
SHF 9 cm 3.400 GHz - 3.475 GHz3 3.300 GHz - 3.500 GHz 3.300 GHz - 3.500 GHz
5 cm 5.650 GHz - 5.850 GHz 5.650 GHz - 5.925 GHz 5.650 GHz - 5.850 GHz
3 cm 10.000 GHz - 10.500 GHz
1.2 cm 24.000 GHz - 24.250 GHz
EHF 6 mm 47.000 GHz - 47.200 GHz
4 mm3 75.500 GHz1 - 81.500 GHz 76.000 GHz - 81.500 GHz 76.000 GHz - 81.500 GHz
2.5 mm 122.250 GHz - 123.000 GHz
2 mm 134.000 GHz - 141.000 GHz
1 mm 241.000 GHz - 250.000 GHz
THF Sub-mm Some administrations have authorized spectrum for amateur use in this region.

1 This is not mentioned in the ITU's Table of Frequency Allocations, but individual administrations may make allocations under Article 4.4 of the ITU Radio Regulations. See the appropriate Wiki page for further information.
2 HF allocation created at the 1979 World Administrative Radio Conference. These are commonly called the "WARC bands".
3 This includes a currently active footnote allocation mentioned in the ITU's Table of Frequency Allocations.

See also: Radio spectrum · Electromagnetic spectrum


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