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Committee on Radio Astronomy Frequencies (CRAF) is an Expert Committee of the European Science Foundation (ESF).

ITU-R Footnote 5.149:

Contents

1. Footnote text

In making assignments to stations of other services to which the bands:

13.36 - 13.41 MHz 4990 - 5000 MHz 92 - 94 GHz
25.55 - 25.67 MHz 6650 - 6675.2 MHz 94.1 - 100 GHz
37.5 - 38.25 MHz 10.6 - 10.68 MHz 102 - 109.5 GHz
73 - 74.6 MHz (in Regions 1 and 3) 14.47 - 14.5 GHz 111.8 - 114.25 GHz
150.05 - 153 MHz (in Region 1) 22.01 - 22.21 GHz 128.33 - 128.59 GHz
322 - 328.6 MHz 22.21 - 22.5 GHz 129.23 - 129.49 GHz
406.1 - 410 MHz 22.81 - 22.86 GHz 130 - 134 GHz
608 - 614 MHz (in Regions 1 and 3) 23.07 - 23.12 GHz 136 - 148.5 GHz
1330 - 1400 MHz 31.2 - 31.3 GHz 151.5 - 158.5 GHz
1610.6 - 1613.8 MHz 31.5 - 31.8 GHz (in Regions 1 and 3) 168.59 - 168.93 GHz
1660 - 1670 MHz 36.43 - 36.5 GHz 171.11 - 171.45 GHz
1718.8 - 1722.2 MHz 42.5 - 43.5 GHz 172.31 - 172.65 GHz
2655 - 2690 MHz 42.77 - 42.87 GHz 173.52 - 173.85 GHz
3260 - 3267 MHz 43.07 - 43.17 GHz 195.75 - 196.15 GHz
3332 - 3339 MHz 43.37 - 43.47 GHz 209 - 226 GHz
3345.8 - 3352.5 MHz 48.94 - 49.04 GHz 241 - 250 GHz
4825 - 4835 MHz 76 - 86 GHz 252 - 275 GHz
4950 - 4990 MHz

are allocated, administrations are urged to take all practicable steps to protect the radio astronomy service from harmful interference. Emissions from spaceborne or airborne stations can be particularly serious sources of interference to the radio astronomy service (see Nos. 4.5 and 4.6 and Article 29).

2. Comments from the ITU Rules of Procedures

There is no allocation to radio astronomy in the bands 73-74.6 MHz (Regions 1 and 3), 1330-1400 MHz, 3260-3267 MHz, 3 332-3 339 MHz, 3 345.8-3 352.5 MHz, 6 650-6 675.2 MHz, 22.01-22.21 GHz, 22.81-22.86 GHz, 23.07-23.12 GHz, 31.2-31.3 GHz, 36.43-36.5 GHz and 93.07-93.27 GHz. Notification of frequency assignments to radio astronomy stations in the bands 73-74.6 MHz (Regions 1 and 3), 1 330-1 400 MHz, 3 260-3 267 MHz, 3 332-3 339 MHz, 3 345.8-3 352.5 MHz, 6 650-6 675.2 MHz, 22.01-22.21 GHz, 22.81-22.86 GHz, 23.07-23.12 GHz, 31.2-31.3 GHz, 36.43-36.5 GHz and 93.07-93.27 GHz will be considered by the Bureau not to be in conformity with the Table of Frequency Allocations.

Last modified: November 9, 2004