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Allocations

U.S. Non-Federal-Government Allocations

20.2 - 21.2 GHz
Standard frequency and time signal-satellite (space-to-Earth)

U.S. Federal Government Allocations

20.2 - 21.2 GHz
FIXED-SATELLITE (space-to-Earth)
MOBILE-SATELLITE (space-to-Earth)
Standard frequency and time signal-satellite (space-to-Earth)

G117

ITU Region 1 Allocations

20.2 - 21.2 GHz
FIXED-SATELLITE (space-to-Earth)
MOBILE-SATELLITE (space-to-Earth)
Standard frequency and time signal-satellite (space-to-Earth)

5.524

ITU Region 2 Allocations

20.2 - 21.2 GHz
FIXED-SATELLITE (space-to-Earth)
MOBILE-SATELLITE (space-to-Earth)
Standard frequency and time signal-satellite (space-to-Earth)

5.524

ITU Region 3 Allocations

20.2 - 21.2 GHz
FIXED-SATELLITE (space-to-Earth)
MOBILE-SATELLITE (space-to-Earth)
Standard frequency and time signal-satellite (space-to-Earth)

5.524

SpectrumWiki

WRC-23 Agenda Item 1.16, Non-GSO FSS earth stations in motion

ViaSat-1 Ka-band Satellite

Wideband Global SATCOM (WGS) System

Hughes Network Systems EchoStar XVII (Jupiter-1)

Common Carrier Fixed Point-to-Point Microwave

Mobile User Objective System (MUOS)

Advanced Extremely High Frequency (AEHF) Military Satellite System

Footnotes

5.524 Additional allocation: in Afghanistan, Algeria, Saudi Arabia, Bahrain, Brunei Darussalam, Cameroon, China, Congo (Rep. of the), Costa Rica, Egypt, the United Arab Emirates, Gabon, Guatemala, Guinea, India, Iran (Islamic Republic of), Iraq, Israel, Japan, Jordan, Kuwait, Lebanon, Malaysia, Mali, Morocco, Mauritania, Nepal, Nigeria, Oman, Pakistan, the Philippines, Qatar, the Syrian Arab Republic, the Dem. Rep. of the Congo, the Dem. People’s Rep. of Korea, Singapore, Somalia, Sudan, South Sudan, Chad, Togo and Tunisia, the frequency band 19.7 21.2 GHz is also allocated to the fixed and mobile services on a primary basis. This additional use shall not impose any limitation on the power flux-density of space stations in the fixed-satellite service in the frequency band 19.7-21.2 GHz and of space stations in the mobile-satellite service in the frequency band 19.7 20.2 GHz where the allocation to the mobile-satellite service is on a primary basis in the latter frequency band. (WRC 15)

G117 In the bands 7.25-7.75 GHz, 7.9-8.4 GHz, 17.375-17.475 GHz, 17.6-21.2 GHz, 30-31 GHz, 33-36 GHz, 39.5-41 GHz, 43.5-45.5 GHz and 50.4-51.4 GHz, the Federal fixed-satellite and mobile-satellite services are limited to military systems.

SpectrumWiki

WRC-23 Agenda Item 1.16, Non-GSO FSS earth stations in motion

"to study and develop technical, operational and regulatory measures, as appropriate, to facilitate the use of the frequency bands 17.7-18.6 GHz and 18.8-19.3 GHz and 19.7-20.2 GHz (space-to-Earth) and 27.5-29.1 GHz and 29.5-30 GHz (Earth-to-space) by non-GSO FSS earth stations in motion, while ensuring due protection of existing services in those frequency bands, in accordance with Resolution 173 (WRC-19);"

Frequency Bands
Band	Use	Service	Table
17.7 - 18.6 GHz	Study for use by non-GSO earth stations in motion (S2E)	Fixed-satellite	-
18.8 - 19.3 GHz	Study for use by non-GSO earth stations in motion (S2E)	Fixed-satellite	-
19.7 - 20.2 GHz	Study for use by non-GSO earth stations in motion (S2E)	Fixed-satellite	-
27.5 - 29.1 GHz	Study for use by non-GSO earth stations in motion (E2S)	Fixed-satellite	-
29.5 - 30 GHz	Study for use by non-GSO earth stations in motion (E2S)	Fixed-satellite	-

External Links:

WRC-23 Agenda

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ViaSat-1 Ka-band Satellite

ViaSat uses this spectrum for its Ka-band direct-to-consumer broadband Internet service, under the trade name "exede." The ViaSat-1 satellite was launched from Baikonur on October 19th, 2011, and entered commercial service on January 16th, 2012.

The satellite downlinks and uplinks use both right- and left-hand circular polarizations from a geostationary orbit at 115.1 deg west longitude.

ViaSat-1 has 72 user beams, of which 63 serve the U.S. Nine beams serve Canada.

User terminals utilize a dish of 0.695 m (about 27") maximum diameter, and will uplink using carriers between 625 kHz and 10 MHz wide using max EIRP between 47.2-50.3 dBW. The antennas have transmit gain of about 44 dBi, and receive gain of about 40 dBi. ViaSat is authorized for up to 250,000 such terminals in the continental U.S., operating under the callsign E120026.

The satellite downlink bandwidth is between 52-416 MHz.

As of March 2013, ViaSat claimed 512,000 customers. They have also announced plans for the ViaSat-2 satellite, to be launched in mid-2016, which will have 2.5 times the capacity of ViaSat-1, and will have a single beam that covers the continental U.S., Mexico, most of Canada, portions of Central America and the Caribbean, and the North Atlantic over to the western edge of Europe.

Frequency Bands
Band	Use	Service	Table
18.3 - 18.8 GHz	ViaSat-1 downlink	Fixed-satellite	N
18.8 - 19.3 GHz	ViaSat-1 downlink	Fixed-satellite	N
19.7 - 20.2 GHz	ViaSat-1 downlink	Fixed-satellite	N
28.1 - 28.6 GHz	ViaSat-1 uplink	Fixed-satellite	N
28.6 - 29.1 GHz	ViaSat-1 uplink	Fixed-satellite	N
29.5 - 30 GHz	ViaSat-1 uplink	Fixed-satellite	N

External Links:

Beam coverage and other information for ViaSat-1 (satbeams.com)

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Wideband Global SATCOM (WGS) System

The Wideband Global SATCOM (WGS) System provides fixed site satellite service at X-band and Ka-band from geosynchronous earth orbit in support of US military operations worldwide.

As of April 2013, four WGS satellites are in orbit, a fifth is scheduled for launch in 2013, a sixth has completed testing, and four more are being built.

Paired Frequency Bands
Paired Bands	Use	Service	Table
7250 - 7750 MHz	X-band downlink	Fixed-satellite	F
7900 - 8400 MHz	X-band uplink	Fixed-satellite	F
20.2 - 21.2 GHz	Ka-band downlink	Fixed-satellite	-
30 - 31 GHz	Ka-band uplink	Fixed-satellite	-

External Links:

WGS Article on Wikipedia

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Hughes Network Systems EchoStar XVII (Jupiter-1)

Hughes is authorized to construct, launch, and operate the EchoStar XVII (aka Jupiter-1) Ka-band GSO satellite at 107.1 deg west longitude, under FCC call sign S2753.

Jupiter-1 will be used to provide new high-speed satellite-based Internet service, which improves over slower Ku-band satellite Internet services. In the U.S., Hughes' Jupiter service will compete with Viasat's Exede service, also operating in the Ka band.

Hughes was granted a waiver to allow GSO FSS operations in the 18.8-19.3 GHz band (space-to-Earth) on a non-conforming basis. It must not interfere with non-GSO non-federal FSS or federal GSO and non-GSO operations in this band.

Hughes' authorization was granted by the FCC on June 12, 2012.

Frequency Bands
Band	Use	Service	Table
18.3 - 18.8 GHz	EchoStar XVII FSS (space-to-Earth)	Fixed-satellite	N
18.8 - 19.3 GHz	EchoStar XVII FSS (space-to-Earth) (non-interference basis)	Fixed-satellite	N
19.7 - 20.2 GHz	EchoStar XVII FSS (space-to-Earth)	Fixed-satellite	N
28.35 - 28.6 GHz	EchoStar XVII FSS (Earth-to-space)	Fixed-satellite	N
28.6 - 29.1 GHz	EchoStar XVII FSS (Earth-to-space) (secondary basis)	Fixed-satellite	N
29.25 - 29.5 GHz	EchoStar XVII FSS (Earth-to-space)	Fixed-satellite	N
29.5 - 30 GHz	EchoStar XVII FSS (Earth-to-space)	Fixed-satellite	N

External Links:

Hughes EchoStar XVII FCC Grant

Hughes EchoStar XVII License Application

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Common Carrier Fixed Point-to-Point Microwave

These bands are permitted for use by common carrier fixed point-to-point microwave systems under Part 101, Subparts C & I of the FCC rules.

Frequency Bands
Band	Use	Service	Table
2450 - 2500 MHz	Common Carrier Fixed Point-to-Point Microwave	Fixed	N
3700 - 4200 MHz	Common Carrier Fixed Point-to-Point Microwave (max bandwidth 20 MHz)	Fixed	N
5925 - 6425 MHz	Common Carrier Fixed Point-to-Point Microwave (max bandwidth 30 MHz)	Fixed	N
6425 - 6525 MHz	Common Carrier Fixed Point-to-Point Microwave (max bandwidth 25 MHz)	Fixed	N
6525 - 6875 MHz	Common Carrier Fixed Point-to-Point Microwave (max bandwidth 30 MHz)	Fixed	N
10.55 - 10.68 GHz	Common Carrier Fixed Point-to-Point Microwave	Fixed	N
10.7 - 11.7 GHz	Common Carrier Fixed Point-to-Point Microwave (max bandwidth 40 MHz)	Fixed	N
13.2 - 13.25 GHz	Common Carrier Fixed Point-to-Point Microwave (max bandwidth 25 MHz)	Fixed	N
17.7 - 18.58 GHz	Common Carrier Fixed Point-to-Point Microwave (max bandwidth 220 MHz)	Fixed	N
18.58 - 18.82 GHz	Common Carrier Fixed Point-to-Point Microwave (max bandwidth 20 MHz)	Fixed	N
18.82 - 18.92 GHz	Common Carrier Fixed Point-to-Point Microwave (max bandwidth 10 MHz)	Fixed	N
18.92 - 19.16 GHz	Common Carrier Fixed Point-to-Point Microwave (max bandwidth 20 MHz)	Fixed	N
19.16 - 19.26 GHz	Common Carrier Fixed Point-to-Point Microwave (max bandwidth 10 MHz)	Fixed	N
19.26 - 19.7 GHz	Common Carrier Fixed Point-to-Point Microwave (max bandwidth 220 MHz)	Fixed	N
21.2 - 23.6 GHz	Common Carrier Fixed Point-to-Point Microwave (max bandwidth 50 MHz)	Fixed	N

External Links:

FCC NPRM and NOI on Backhaul (FCC 10-146)

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Mobile User Objective System (MUOS)

According to the U.S. Navy:

Mobile User Object System (MUOS) is a narrowband Military Satellite Communications (MILSATCOM) system that supports a worldwide, multi-Service population of mobile and fixed-site terminal users in the Ultra High Frequency (UHF) band, providing increased communications capabilities to smaller terminals while still supporting interoperability to legacy terminals.

MUOS adapts a commercial third generation Wideband Code Division Multiple Access (WCDMA) cellular phone network architecture and combines it with geosynchronous satellites (in place of cell towers) to provide a new and more capable UHF MILSATCOM system. The constellation of four operational satellites and ground network control will provide greater than 10 times the system capacity of the current UHF Follow-On (UFO) constellation.

The first MUOS satellite was launched February 24th, 2012, and began operations in August 2012. The MUOS constellation will eventually be comprised of four GSO satellites and one in-orbit spare. The operational satellites will be located at 177 deg W (Pacific), 100 deg W (CONUS), 15.5 deg W (Atlantic), and 75 deg E (Indian). The spare satellite will be parked at 72 deg E.

The satellites transmit 9.8 W of power into a 14 m dish. The service links are comprised of four 5 MHz-wide SA-WCDMA channels occupying the 20 MHz wide UHF uplink and downlink bands.

Frequency Bands
Band	Use	Service	Table
300 - 320 MHz	MUOS service uplink	Mobile-satellite	F
360 - 380 MHz	MUOS service downlink	Mobile-satellite	F
20.2 - 21.2 GHz	MUOS feeder downlink	Fixed-satellite	F
30 - 31 GHz	MUOS feeder uplink	Fixed-satellite	F

External Links:

"The Mobile User Objective System" (Johns Hopkins University Applied Physics Lab Technical Digest)

MUOS (Wikipedia)

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Advanced Extremely High Frequency (AEHF) Military Satellite System

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Legislation (1)

Engineering Data

	Lower Frequency	Center Frequency	Upper Frequency
Frequency	20.2 GHz	20.7 GHz	21.2 GHz
Wavelength	1.5 cm	1.4 cm	1.4 cm
Band designator(s)	SHF; K-band (IEEE)	SHF; K-band (IEEE)	SHF; K-band (IEEE)
Isotropic collecting area	0.2 cm²	0.2 cm²	0.2 cm²
Free space loss (1 m)	58.6 dB	58.8 dB	59.0 dB
Free space loss (1 km)	118.6 dB	118.8 dB	119.0 dB
Free space loss (10 km)	138.6 dB	138.8 dB	139.0 dB
Free space loss (100 km)	158.6 dB	158.8 dB	159.0 dB
Free space loss (1000 km)	178.6 dB	178.8 dB	179.0 dB
Free space loss (35,786 km = GEO orbit)	209.6 dB	209.8 dB	210.1 dB
Free space loss (378,370 km = Moon)	230.1 dB	230.3 dB	230.5 dB