Detail of Frequency Band

Band reserved for non-civil utilisation. If civil utilisation is also stated with priority, the band is being used equally with civil utilisation on the basis of coordination.

Non-civil stations can use the band with subsidiarity to civil ones (which use the band with priority), but must not interfere and do not have rihgt to protection against interference by civil utilisation.

Non-civil stations cannot use the band.

Band reserved for civil utilisation. If non-civil utilisation is also stated with priority, the band is being used equally with non-civil utilisation on the basis of coordination.

Civil stations can use the band with subsidiarity to non-civil ones (which use the band with priority), but must not interfere and do not have rihgt to protection against interference by non-civil utilisation.

Civil stations cannot use the band.

In making assignments to stations of other services to which the bands
13 360 – 13 410 kHz, 4 950 – 4 990 MHz, 102 – 109,5 GHz,
25 550 – 25 670 kHz, 4 990 – 5 000 MHz, 111,8 – 114,25 GHz,
37,5 – 38,25 MHz, 6 650 – 6 675,2 MHz, 128,33 – 128,59 GHz,
73 – 74,6 MHz in Regions 1 and 3, 10,6 – 10,68 GHz, 129,23 – 129,49 GHz,
150,05 – 153 MHz in Region 1, 14,47 – 14,5 GHz, 130 – 134 GHz,
322 – 328,6 MHz, 22,01 – 22,21 GHz, 136 – 148,5 GHz,
406,1 – 410 MHz, 22,21 – 22,5 GHz, 151,5 – 158,5 GHz,
608 – 614 MHz in Regions 1 and 3, 22,81 – 22,86 GHz, 168,59 – 168,93 GHz,
1 330 – 1 400 MHz, 23,07 – 23,12 GHz, 171,11 – 171,45 GHz,
1 610,6 – 1 613,8 MHz, 31,2 – 31,3 GHz, 172,31 – 172,65 GHz,
1 660 – 1 670 MHz, 31,5 – 31,8 GHz in Regions 1 and 3, 173,52 – 173,85 GHz,
1 718,8 – 1 722,2 MHz, 36,43 – 36,5 GHz, 195,75 – 196,15 GHz,
2 655 – 2 690 MHz, 42,5 – 43,5 GHz, 209 – 226 GHz,
3 260 – 3267 MHz, 48,94 – 49,04 GHz, 241 – 250 GHz a
3 332 – 3 339 MHz, 76 – 86 GHz, 252 – 275 GHz,
3 345,8 – 3 352,5 MHz, 92 – 94 GHz,
4 825 – 4 835 MHz, 94,1 – 100 GHz,
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 of RR).

The bands 31.8 – 33.4 GHz, 37 – 40 GHz, 40.5 – 43.5 GHz, 51.4 – 52.6 GHz, 55.78 – 59 GHz and 64 –66 GHz are available for high-density applications in the fixed service (see Resolution 75). Administrations should take this into account when considering regulatory provisions in relation to these bands. Because of the potential deployment of high-density applications in the fixed-satellite service in the bands 39.5 – 40 GHz and 40.5 – 42 GHz (see No. 5.516B of RR), administrations should further take into account potential constraints to high-density applications in the fixed service, as appropriate.

The equivalent power flux-density (epfd) produced in the frequency band 42.5-43.5 GHz by all space stations in any non-geostationary-satellite system in the fixed-satellite service (space-to-Earth), or in the broadcasting-satellite service operating in the frequency band 42-42.5 GHz, shall not exceed the following values at the site of any radio astronomy station for more than 2% of the time:

−230 dB(W/m²) in 1 GHz and −246 dB(W/m²) in any 500 kHz of the frequency band 42.5-43.5 GHz at the site of any radio astronomy station registered as a single-dish telescope; and

−209 dB(W/m²) in any 500 kHz of the frequency band 42.5-43.5 GHz at the site of any radio astronomy station registered as a very long baseline interferometry station.

These epfd values shall be evaluated using the methodology given in Recommendation ITU-R S.1586-1 and the reference antenna pattern and the maximum gain of an antenna in the radio astronomy service given in Recommendation ITU-R RA.1631-0 and shall apply over the whole sky and for elevation angles higher than the minimum operating angle θmin of the radiotelescope (for which a default value of 5° should be adopted in the absence of notified information).

These values shall apply at any radio astronomy station that either:

- was in operation prior to 5 July 2003 and has been notified to the Bureau before 4 January 2004;
or

- was notified before the date of receipt of the complete Appendix 4 information for coordination or notification, as appropriate, for the space station to which the limits apply.

Other radio astronomy stations notified after these dates may seek an agreement with administrations that have authorized the space stations. In Region 2, Resolution 743 (WRC-03) shall apply. The limits in this footnote may be exceeded at the site of a radio astronomy station of any country whose administration so agreed.

The power flux-density in the band 42.5 – 43.5 GHz produced by any geostationary space station in the fixed-satellite service (space-to-Earth), or the broadcasting-satellite service operating in the 42 –42.5 GHz band, shall not exceed the following values at the site of any radio astronomy station:
a) 137 dB(W/m2) in 1 GHz and –153 dB(W/m2) in any 500 kHz of the 42.5 – 43.5 GHz band at the site of any radio astronomy station registered as a single-dish telescope; and
b) 116 dB(W/m2) in any 500 kHz of the 42.5 – 43.5 GHz band at the site of any radio astronomy station registered as a very long baseline interferometry station.
These values shall apply at the site of any radio astronomy station that either:
a) was in operation prior to 5 July 2003 and has been notified to the Radiocommunication Bureau of ITU before 4 January 2004; or
b) was notified before the date of receipt of the complete RR Appendix 4 information for coordination or notification, as appropriate, for the space station to which the limits apply.
Other radio astronomy stations notified after these dates may seek an agreement with administrations that have authorized the space stations. In Region 2, Resolution 743 shall apply. The limits in this footnote may be exceeded at the site of a radio astronomy station of any country whose administration so agreed.

The allocation of the spectrum for the fixed-satellite service in the bands 42.5 – 43.5 GHz and 47.2 – 50.2 GHz for Earth-to-space transmission is greater than that in the band 37.5 – 39.5 GHz for space-to-Earth transmission in order to accommodate feeder links to broadcasting satellites. Administrations are urged to take all practicable steps to reserve the band 47.2 – 49.2 GHz for feeder links for the broadcasting-satellite service operating in the band 40.5 – 42.5 GHz.