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 the bands 1 400 – 1 727 MHz, 101 – 120 GHz and 197 – 220 GHz, passive research is being conducted by some countries in a programme for the search for intentional emissions of extraterrestrial origin.

The bands 1 525 – 1 544 MHz, 1 545 – 1 559 MHz, 1 626.5 – 1 645.5 MHz and 1 646.5 – 1 660.5 MHz shall not be used for feeder links of any service. In exceptional circumstances, however, an earth station at a specified fixed point in any of the mobile-satellite services may be authorized by an administration to communicate via space stations using these bands.

In applying the procedures of Section II of Article 9 of RR to the mobile-satellite service in the bands 1 530 – 1 544 MHz and 1 626.5 – 1 645.5 MHz, priority shall be given to accommodating the spectrum requirements for distress, urgency and safety communications of the Global Maritime Distress and Safety System (GMDSS). Maritime mobile-satellite distress, urgency and safety communications shall have priority access and immediate availability over all other mobile satellite communications operating within a network. Mobile-satellite systems shall not cause unacceptable interference to, or claim protection from, distress, urgency and safety communications of the GMDSS. Account shall be taken of the priority of safety-related communications in the other mobile-satellite services. The provisions of Resolution 222 shall apply.

The use of the bands 1 525 – 1 559 MHz and 1 626.5 – 1 660.5 MHz by the mobile-satellite services is subject to coordination under No. 9.11A of RR.

The use of the band 1 544 – 1 545 MHz by the mobile-satellite service (space-to-Earth) is limited to distress and safety communications (see Article 31 of RR).

Transmissions in the band 1 545 – 1 555 MHz from terrestrial aeronautical stations directly to aircraft stations, or between aircraft stations, in the aeronautical mobile (R) service are also authorized when such transmissions are used to extend or supplement the satellite-to-aircraft links.

In applying the procedures of Section II of Article 9 of RR to the mobile-satellite service in the bands 1 545 – 1 555 MHz and 1 646.5 – 1 656.5 MHz, priority shall be given to accommodating the spectrum requirements of the aeronautical mobile-satellite (R) service providing transmission of messages with priority 1 to 6 in Article 44 of RR. Aeronautical mobile-satellite (R) service communications with priority 1 to 6 in Article 44 of RR shall have priority access and immediate availability, by pre-emption if necessary, over all other mobile-satellite communications operating within a network. Mobile-satellite systems shall not cause unacceptable interference to, or claim protection from, aeronautical mobile-satellite (R) service communications with priority 1 to 6 in Article 44 of RR. Account shall be taken of the priority of safety-related communications in the other mobile-satellite services. The provisions of Resolution 222 shall apply.

In the frequency bands:
137-138 MHz,
157.1875-157.3375 MHz,
161.7875-161.9375 MHz,
387-390 MHz,
400.15-401 MHz,
1 452-1 492 MHz,
1 525-1 610 MHz,
1 613.8-1 626.5 MHz,
2 655-2 690 MHz,
21.4-22 GHz,
Resolution 739 (Rev.WRC-19) applies. (WRC-19).

For the use of the bands 1 518 – 1 544 MHz, 1 545 – 1 559 MHz, 1 610 – 1 645.5 MHz, 1 646.5 –1 660.5 MHz, 1 668 – 1 675 MHz, 1 980 – 2 010 MHz, 2 170 – 2 200 MHz, 2 483.5 – 2 520 MHz and 2 670 – 2 690 MHz by the mobile-satellite service, see Resolutions 212 and 225.