Allocations

 
U.S. Non-Federal-Government Allocations
1525 - 1535 MHz
MOBILE-SATELLITE (space-to-Earth) US315 US380


U.S. Federal Government Allocations
1525 - 1535 MHz
MOBILE-SATELLITE (space-to-Earth) US315 US380


ITU Region 1 Allocations
1530 - 1535 MHz
SPACE OPERATION (space-to-Earth)
MOBILE-SATELLITE (space-to-Earth) 5.208B 5.351A 5.353A
Earth exploration-satellite
Fixed
Mobile except aeronautical mobile


ITU Region 2 Allocations
1530 - 1535 MHz
SPACE OPERATION (space-to-Earth)
MOBILE-SATELLITE (space-to-Earth) 5.208B 5.351A 5.353A
Earth exploration-satellite
Fixed
Mobile 5.343


ITU Region 3 Allocations
1530 - 1535 MHz
SPACE OPERATION (space-to-Earth)
MOBILE-SATELLITE (space-to-Earth) 5.208B 5.351A 5.353A
Earth exploration-satellite
Fixed
Mobile 5.343


SpectrumWiki


Footnotes

5.208B   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)

5.341   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.

5.342   Additional allocation: in Armenia, Azerbaijan, Belarus, the Russian Federation, Uzbekistan, Kyrgyzstan and Ukraine, the frequency band 1 429-1 535 MHz is also allocated to the aeronautical mobile service on a primary basis, exclusively for the purposes of aeronautical telemetry within the national territory. As of 1 April 2007, the use of the frequency band 1 452-1 492 MHz is subject to agreement between the administrations concerned. (WRC 15)

5.343   In Region 2, the use of the band 1 435-1 535 MHz by the aeronautical mobile service for telemetry has priority over other uses by the mobile service.

5.351   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.

5.351A   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 (Rev.WRC 07)* and 225 (Rev.WRC 07)**. (WRC 07)

5.353A   In applying the procedures of Section II of Article 9 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 (WRC-2000)* shall apply.) (WRC 2000)

5.354   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.

US315   In the bands 1530-1544 MHz and 1626.5-1645.5 MHz, maritime mobile-satellite distress and safety communications, e.g., GMDSS, shall have priority access with real-time preemptive capability in the mobile-satellite service. Communications of mobile-satellite system stations not participating in the GMDSS shall operate on a secondary basis to distress and safety communications of stations operating in the GMDSS. Account shall be taken of the priority of safety-related communications in the mobile-satellite service.

US380   In the bands 1525-1544 MHz, 1545-1559 MHz, 1610-1645.5 MHz, 1646.5-1660.5 MHz, and 2483.5-2500 MHz, a non-Federal licensee in the mobile-satellite service (MSS) may also operate an ancillary terrestrial component in conjunction with its MSS network, subject to the Commission’s rules for ancillary terrestrial components and subject to all applicable conditions and provisions of its MSS authorization.


SpectrumWiki

 
Inmarsat
Ligado Networks
Standard LTE Bands
WRC-27 consideration of MSS space-to-space links


Related Documents, Links, and Multimedia:
Occupancy Measurements (10)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 1525 MHz 1530 MHz 1535 MHz
Wavelength 19.7 cm 19.6 cm 19.5 cm
Band designator(s) UHF; L-band (IEEE) UHF; L-band (IEEE) UHF; L-band (IEEE)
Isotropic collecting area 30.8 cm2 30.6 cm2 30.4 cm2
Free space loss (1 m) 36.1 dB 36.1 dB 36.2 dB
Free space loss (1 km) 96.1 dB 96.1 dB 96.2 dB
Free space loss (10 km) 116.1 dB 116.1 dB 116.2 dB
Free space loss (100 km) 136.1 dB 136.1 dB 136.2 dB
Free space loss (1000 km) 156.1 dB 156.1 dB 156.2 dB
Free space loss
(35,786 km = GEO orbit)
187.2 dB 187.2 dB 187.2 dB
Free space loss (378,370 km = Moon) 207.7 dB 207.7 dB 207.7 dB
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