9-centimeter band

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The 9-centimeter band is a portion of the SHF (microwave) radio spectrum internationally allocated to amateur radio and amateur satellite use. The amateur radio band, in ITU regions 1 and 2, is between 3,300 MHz and 3,500 MHz, and it is available only on a secondary basis. The amateur satellite band is between 3,400 MHz and 3,410 MHz, and it is only available in ITU Regions 1 and 2, on a non-interference basis to other users (ITU footnote 5.282). In Germany, Israel and the United Kingdom, the band 3,400 - 3,475 MHz is also allocated to the amateur service on a secondary basis (ITU footnote 5.431).^[1]

In CEPT's "European Common Allocation Table", footnote EU17 allocates 3,400 MHz to 3,410 MHz to European amateurs on a secondary basis.^[2]

Contents

1 History
2 Frequencies of note
3 See also
4 References

History

This section requires expansion with:

Origin.

Frequencies of note

3,400.1 MHz IARU Region-1 Calling frequency and Global EME centre of activity^[3]
3,456.1 MHz IARU Region 2 Calling Frequency

References

^ "FCC Online Table of Frequency Allocations" (PDF). 47 C.F.R.. Federal Communications Commission. June 2, 2011. http://transition.fcc.gov/oet/spectrum/table/fcctable.pdf. Retrieved August 4, 2011.
^ Blondeel Timmerman, Hans (Sunday, 15 March 2009). "3300-3500 MHz" (HTML). International Amateur Radio Union Region 1 Homepage. International Amateur Radio Union Region 1. http://www.iaru-r1.org/index.php?option=com_content&view=article&id=194&Itemid=147. Retrieved August 4, 2011. "EU17: In the sub-bands 3400-3410 MHz, 5660-5670 MHz, 10.36-10.37 GHz and 10.45-10.46 GHz the amateur service operates on a secondary basis. In making assignments to other services, CEPT administrations are requested wherever possible to maintain these sub-bands in such a way as to facilitate the reception of amateur emissions with minimal power flux densities."
^ 3400MHz Allocations - UK Microwave Group http://www.microwavers.org/3400mhz.htm

v d e 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	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		220.000 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 it is a de facto international amateur radio allocation. 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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