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Allocations

Intro to Allocations

U.S. Non-Federal-Government Allocations

1525 - 1535 MHz
MOBILE-SATELLITE (space-to-Earth) US315 US380

5.341 5.351

FCC Rule Parts:
Satellite Communications (25)
Maritime (80)

U.S. Federal Government Allocations

1525 - 1535 MHz
MOBILE-SATELLITE (space-to-Earth) US315 US380

5.341 5.351

ITU Region 1 Allocations

1525 - 1530 MHz
SPACE OPERATION (space-to-Earth)
FIXED
MOBILE-SATELLITE (space-to-Earth) 5.208B 5.351A
Earth exploration-satellite
Mobile except aeronautical mobile 5.349

5.341 5.342 5.350 5.351 5.352A 5.354

ITU Region 2 Allocations

1525 - 1530 MHz
SPACE OPERATION (space-to-Earth)
MOBILE-SATELLITE (space-to-Earth) 5.208B 5.351A
Earth exploration-satellite
Fixed
Mobile 5.343

5.341 5.342 5.350 5.351 5.352A 5.354

ITU Region 3 Allocations

1525 - 1530 MHz
SPACE OPERATION (space-to-Earth)
FIXED
MOBILE-SATELLITE (space-to-Earth) 5.208B 5.351A
Earth exploration-satellite
Mobile 5.349

5.341 5.342 5.350 5.351 5.352A 5.354

SpectrumWiki

Band Uses (1525 - 1535 MHz)

Inmarsat

Ligado Networks

Standard LTE Bands

WRC-27 consideration of MSS space-to-space links

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.

5.349 Different category of service: in Saudi Arabia, Azerbaijan, Bahrain, Cameroon, Egypt, Iran (Islamic Republic of), Iraq, Israel, Kazakhstan, Kuwait, Lebanon, North Macedonia, Morocco, Qatar, Syrian Arab Republic, Kyrgyzstan, Turkmenistan and Yemen, the allocation of the frequency band 1 525 1 530 MHz to the mobile, except aeronautical mobile, service is on a primary basis (see No. 5.33). (WRC 19)

5.350 Additional allocation: in Kyrgyzstan and Turkmenistan, the frequency band 1 525-1 530 MHz is also allocated to the aeronautical mobile service on a primary basis. (WRC 19)

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)

5.352A In the frequency band 1 525-1 530 MHz, stations in the mobile-satellite service, except stations in the maritime mobile-satellite service, shall not cause harmful interference to, or claim protection from, stations of the fixed service in Algeria, Saudi Arabia, Egypt, Guinea, India, Israel, Italy, Jordan, Kuwait, Mali, Morocco, Mauritania, Nigeria, Oman, Pakistan, the Philippines, Qatar, Syrian Arab Republic, Viet Nam and Yemen notified prior to 1 April 1998. (WRC 19)

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

Band Uses (1525 - 1535 MHz)

Inmarsat

The Inmarsat system uses 1525-1559 MHz for the downlink, and 1626.5-1660.5 MHz for the uplink (2x34 MHz). The sub-band 1544-1545/1645.5-1646.5 MHz is reserved for safety & distress communications.

Inmarsat consists of three satellites in geostationary orbit that provide coverage over most of the Earth, excluding the polar regions. Inmarsat is used for a wide variety of purposes, including voice and data services to ships, in-flight telephone service to airplanes when over the oceans, and voice/data services through the "Broadband Global Access Network" (BGAN), using laptop-sized satellite terminals.

Paired Frequency Bands
Paired Bands	Use	Service	Table
1525 - 1559 MHz	Inmarsat downlink	Mobile-satellite	-
1626.5 - 1660.5 MHz	Inmarsat uplink	Mobile-satellite (Earth-to-space)	-

External Links:

Inmarsat (Wikipedia)

FCC Inmarsat list

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Ligado Networks

Ligado Networks, formerly LightSquared, formerly Mobile Satellite Ventures (MSV), operates space- and ground-based wireless services. The space services were originally provided using the MSAT-1 and MSAT-2 satellites in geostationary orbit, but now uses the Skyterra-1 satellite, also in GSO at the 101 deg W orbital slot. A second satellite, Skyterra-2, was planned, but is on hold due to the earlier LightSquared bankruptcy.

MSAT-1 was launched in 1996 operated by U.S. and Canadian companies, while MSAT-2, also referred to as AMSC-1 (for American Mobile Satellite Consortium), was launched in 1995 and operated by American companies. MSAT-1 was located at 106.5 W, and MSAT-2 was located at 101 W.

LightSquared originally desired to supplement its mobile-satellite service with an Ancillary Terrestrial Component (ATC) network comprised of up to 40,000 base stations in their 1525-1559 MHz band. However, concern over interference to the embedded base of GPS receivers operating just above 1559 MHz scuttled that idea after it had already been approved by the FCC. Lawsuits and bankruptcy soon followed. In 2016, Ligado filed a plan with the FCC, agreeing to move its ATC operations to the lower part of the band at

Frequency Bands
Band	Use	Service	Table
1530 - 1544 MHz	LightSquared MSAT-2 Satellite (space-to-Earth)	Mobile-satellite	N
1545 - 1559 MHz	LightSquared MSAT-2 Satellite (space-to-Earth)	Mobile-satellite	N
1631.5 - 1645.5 MHz	LightSquared MSAT-2 Satellite (Earth-to-space)	Mobile-satellite	N
1646.5 - 1660.5 MHz	LightSquared MSAT-2 Satellite (Earth-to-space)	Mobile-satellite	N
13 - 13.15 GHz	LightSquared MSAT-2 Satellite Feeder Links (Earth-to-space)	Fixed-satellite	N
13.2 - 13.25 GHz	LightSquared MSAT-2 Satellite Feeder Links (Earth-to-space)	Fixed-satellite	N

Frequencies
Frequency	Bandwidth	Use	Service	Table
11.7005 GHz	-	LightSquared MSAT-2 Satellite TT&C (space-to-Earth)	Fixed-satellite	N
11.701 GHz	-	LightSquared MSAT-2 Satellite TT&C (space-to-Earth)	Fixed-satellite	N
14.005 GHz	-	LightSquared MSAT-2 Satellite TT&C (Earth-to-space)	Fixed-satellite	N
14.4995 GHz	-	LightSquared MSAT-2 Satellite TT&C (Earth-to-space)	Fixed-satellite	N

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Standard LTE Bands

The following bands have been defined by 3GPP as standard LTE bands for Frequency Division Duplex (FDD, where mobile and base stations transmit in separate bands) and Time Division Duplex (TDD, where mobiles and bases transmit and receive on the same frequency). These bands are defined in 3GPP TS 36.101 (link below).

Note that bands 15 & 16 and 30-32 are not defined, and the FDD band 29 is used for downlink-only for carrier aggregation, so it has no corresponding uplink band.

Uplinks refer to the frequencies used for handsets and other user devices to transmit to the base station, and downlinks refer to frequencies used by base stations to transmit to the user devices.

Paired Frequency Bands
Paired Bands	Use	Service	Table
452.5 - 457.5 MHz	LTE band 31 FDD uplink	Mobile	-
462.5 - 467.5 MHz	LTE band 31 FDD downlink	Mobile	-
699 - 716 MHz	LTE band 12 FDD uplink	Mobile	-
729 - 746 MHz	LTE band 12 FDD downlink	Mobile	-
703 - 748 MHz	LTE band 28 FDD uplink	Mobile	-
758 - 803 MHz	LTE band 28 FDD downlink	Mobile	-
704 - 716 MHz	LTE band 17 FDD uplink	Mobile	-
734 - 746 MHz	LTE band 17 FDD downlink	Mobile	-
746 - 756 MHz	LTE band 13 FDD downink	Mobile	-
777 - 787 MHz	LTE band 13 FDD uplink	Mobile	-
758 - 768 MHz	LTE band 14 FDD downlink	Mobile	-
788 - 798 MHz	LTE band 14 FDD uplink	Mobile	-
807 - 824 MHz	LTE band 27 FDD uplink	Mobile	-
852 - 869 MHz	LTE band 27 FDD downlink	Mobile	-
814 - 849 MHz	LTE band 26 FDD uplink	Mobile	-
859 - 894 MHz	LTE band 26 FDD downlink	Mobile	-
815 - 830 MHz	LTE band 18 FDD uplink	Mobile	-
860 - 875 MHz	LTE band 18 FDD downlink	Mobile	-
824 - 849 MHz	LTE band 5 FDD uplink	Mobile	-
869 - 894 MHz	LTE band 5 FDD downlink	Mobile	-
830 - 840 MHz	LTE band 6 FDD uplink ("band 6 is not applicable" according to the standard)	Mobile	-
875 - 885 MHz	LTE band 6 FDD downlink ("band 6 is not applicable" according to the standard)	Mobile	-
830 - 845 MHz	LTE band 19 FDD uplink	Mobile	-
875 - 890 MHz	LTE band 19 FDD downlink	Mobile	-
791 - 821 MHz	LTE band 20 FDD downlink	Mobile	-
832 - 862 MHz	LTE band 20 FDD uplink	Mobile	-
880 - 915 MHz	LTE band 8 FDD uplink	Mobile	-
925 - 960 MHz	LTE band 8 FDD downlink	Mobile	-
1427.9 - 1447.9 MHz	LTE band 11 FDD uplink	Mobile	-
1475.9 - 1495.9 MHz	LTE band 11 FDD downlink	Mobile	-
1447.9 - 1462.9 MHz	LTE band 21 FDD uplink	Mobile	-
1495.9 - 1510.9 MHz	LTE band 21 FDD downlink	Mobile	-
1525 - 1559 MHz	LTE band 24 FDD downlink	Mobile	-
1626.5 - 1660.5 MHz	LTE band 24 FDD uplink	Mobile	-
1710 - 1755 MHz	LTE band 4 FDD uplink	Mobile	-
2110 - 2155 MHz	LTE band 4 FDD downlink	Mobile	-
1710 - 1785 MHz	LTE band 3 FDD uplink	Mobile	-
1805 - 1880 MHz	LTE band 3 FDD downlink	Mobile	-
1710 - 1770 MHz	LTE band 10 FDD uplink	Mobile	-
2110 - 2170 MHz	LTE band 10 FDD downlink	Mobile	-
1749.9 - 1784.9 MHz	LTE band 9 FDD uplink	Mobile	-
1844.9 - 1879.9 MHz	LTE band 9 FDD downlink	-	-
1850 - 1910 MHz	LTE band 2 FDD uplink	Mobile	-
1930 - 1990 MHz	LTE band 2 FDD downlink	Mobile	-
1850 - 1915 MHz	LTE band 25 FDD uplink	Mobile	-
1930 - 1995 MHz	LTE band 25 FDD downlink	Mobile	-
1920 - 1980 MHz	LTE band 1 FDD uplink	Mobile	-
2110 - 2170 MHz	LTE band 1 FDD downlink	Mobile	-
2000 - 2020 MHz	LTE band 23 FDD uplink	Mobile	-
2180 - 2200 MHz	LTE band 23 FDD downlink	Mobile	-
2305 - 2315 MHz	LTE band 30 FDD uplink	Mobile	-
2350 - 2360 MHz	LTE band 30 FDD downlink	Mobile	-
2500 - 2570 MHz	LTE band 7 FDD uplink	Mobile	-
2620 - 2690 MHz	LTE band 7 FDD downlink	Mobile	-
3410 - 3490 MHz	LTE band 22 FDD uplink	Mobile	-
3510 - 3590 MHz	LTE band 22 FDD downlink	Mobile	-

Frequency Bands
Band	Use	Service	Table
703 - 803 MHz	LTE band 44 TDD	Mobile	-
717 - 728 MHz	LTE band 29 FDD unpaired downlink (carrier aggregation use only)	Mobile	-
1850 - 1910 MHz	LTE band 35 TDD	Mobile	-
1880 - 1920 MHz	LTE band 39 TDD	Mobile	-
1900 - 1920 MHz	LTE band 33 TDD	Mobile	-
1910 - 1930 MHz	LTE band 37 TDD	Mobile	-
1930 - 1990 MHz	LTE band 36 TDD	Mobile	-
2010 - 2025 MHz	LTE band 34 TDD	Mobile	-
2300 - 2400 MHz	LTE band 40 TDD	Mobile	-
2496 - 2690 MHz	LTE band 41 TDD	Mobile	-
2570 - 2620 MHz	LTE band 38 TDD	Mobile	-
3400 - 3600 MHz	LTE band 42 TDD	Mobile	-
3600 - 3800 MHz	LTE band 43 TDD	Mobile	-

External Links:

3GPP TS 36.101 specification

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WRC-27 consideration of MSS space-to-space links

WRC-27 agenda item 1.11:

to consider the technical and operational issues, and regulatory provisions, for space-to-space links among non-geostationary and geostationary satellites in the frequency bands 1 518-1 544 MHz,
1 545-1 559 MHz, 1 610-1 645.5 MHz, 1 646.5-1 660 MHz, 1 670-1 675 MHz and 2 483.5-2 500 MHz allocated to the mobile-satellite service, in accordance with Resolution 249 (Rev.WRC-23)

Frequency Bands
Band	Use	Service	Table
1518 - 1544 MHz	WRC-27 consideration of MSS space-to-space links	Mobile-satellite	-
1545 - 1559 MHz	WRC-27 consideration of MSS space-to-space links	Mobile-satellite	-
1610 - 1645.5 MHz	WRC-27 consideration of MSS space-to-space links	Mobile-satellite	-
1646.5 - 1660 MHz	WRC-27 consideration of MSS space-to-space links	Mobile-satellite	-
1670 - 1675 MHz	WRC-27 consideration of MSS space-to-space links	Mobile-satellite	-
2483.5 - 2500 MHz	WRC-27 consideration of MSS space-to-space links	Mobile-satellite	-

External Links:

WRC-27 agenda (see Annex 1)

Resolution 249 (WRC-23)

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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	36.1 dB
Free space loss (1 km)	96.1 dB	96.1 dB	96.1 dB
Free space loss (10 km)	116.1 dB	116.1 dB	116.1 dB
Free space loss (100 km)	136.1 dB	136.1 dB	136.1 dB
Free space loss (1000 km)	156.1 dB	156.1 dB	156.1 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