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Allocations

U.S. Non-Federal-Government Allocations

5350 - 5460 MHz
AERONAUTICAL RADIONAVIGATION 5.449
Earth exploration-satellite (active) 5.448B
Radiolocation
Space research (active)

US390

FCC Rule Parts:
Aviation (87)
Private Land Mobile (90)

U.S. Federal Government Allocations

5350 - 5460 MHz
EARTH EXPLORATION-SATELLITE (active) 5.448B
RADIOLOCATION G56
AERONAUTICAL RADIONAVIGATION 5.449
SPACE RESEARCH (active)

US390 G130

ITU Region 1 Allocations

5350 - 5460 MHz
EARTH EXPLORATION-SATELLITE (active) 5.448B
RADIOLOCATION 5.448D
AERONAUTICAL RADIONAVIGATION 5.449
SPACE RESEARCH (active) 5.448C

ITU Region 2 Allocations

5350 - 5460 MHz
EARTH EXPLORATION-SATELLITE (active) 5.448B
RADIOLOCATION 5.448D
AERONAUTICAL RADIONAVIGATION 5.449
SPACE RESEARCH (active) 5.448C

ITU Region 3 Allocations

5350 - 5460 MHz
EARTH EXPLORATION-SATELLITE (active) 5.448B
RADIOLOCATION 5.448D
AERONAUTICAL RADIONAVIGATION 5.449
SPACE RESEARCH (active) 5.448C

SpectrumWiki

RADARSAT

DOPRAD Radars

ESA Sentinel-1 Satellite C-band Synthetic Aperture Radar (C-SAR)

Wi-Fi

2019 World Radiocommunication Conference (WRC-19) Agenda Item 1.16

RISAT-1 Indian Radar Imaging Satellite

Footnotes

5.448B The Earth exploration-satellite service (active) operating in the band 5350-5570 MHz and space research service (active) operating in the band 5460-5570 MHz shall not cause harmful interference to the aeronautical radionavigation service in the band 5350-5460 MHz, the radionavigation service in the band 5460-5470 MHz and the maritime radionavigation service in the band 5470-5570 MHz.

5.448C The space research service (active) operating in the band 5350-5460 MHz shall not cause harmful interference to nor claim protection from other services to which this band is allocated.

5.448D In the frequency band 5350-5470 MHz, stations in the radiolocation service shall not cause harmful interference to, nor claim protection from, radar systems in the aeronautical radionavigation service operating in accordance with No. 5.449.

5.449 The use of the band 5350-5470 MHz by the aeronautical radionavigation service is limited to airborne radars and associated airborne beacons.

US390 Federal stations in the space research service (active) operating in the band 5350-5460 MHz shall not cause harmful interference to, nor claim protection from, Federal and non-Federal stations in the aeronautical radionavigation service nor Federal stations in the radiolocation service.

G56 Federal radiolocation in the bands 1215-1300, 2900-3100, 5350-5650 and 9300-9500 MHz is primarily for the military services; however, limited secondary use is permitted by other Federal agencies in support of experimentation and research programs. In addition, limited secondary use is permitted for survey operations in the band 2900-3100 MHz.

G130 Federal stations in the radiolocation service operating in the band 5350-5470 MHz, shall not cause harmful interference to, nor claim protection from, Federal stations in the aeronautical radionavigation service operating in accordance with ITU Radio Regulation No. 5.449.

SpectrumWiki

RADARSAT

According to the Canadian Space Agency,

RADARSAT-1 is a sophisticated Earth observation satellite developed by Canada to monitor environmental changes and the planet's natural resources.

Launched in November 1995, RADARSAT-1 provides Canada and the world with an operational radar satellite system capable of timely delivery of large amounts of data. Equipped with a powerful synthetic aperture radar (SAR) instrument, it acquires images of the Earth day or night, in all weather and through cloud cover, smoke and haze.

Canada also operates RADARSAT-2:

Launched in December 2007, Canada's next-generation commercial radar satellite offers powerful technical advancements that will enhance marine surveillance, ice monitoring, disaster management, environmental monitoring, resource management and mapping in Canada and around the world.

This project represents a unique collaboration between government and industry. MacDonald, Dettwiler and Associates Ltd. (MDA) will own and operate the satellite and ground segment. The Canadian Space Agency helps fund the construction and launch of the satellite and will recover this investment through the supply of RADARSAT-2 data to the Government of Canada during the lifetime of the mission.

Both satellites operate in non-GSO orbits with altitudes randing from 792-813 km, and an orbital inclination of 98.6 deg. The peak radiated power for RADARSAT-1 is 4350 W, and for RADARSAT-2 it is 2400 or 3700 W.

Additional satellites in the RADARSAT series are planned, including RADARSAT-3 and RADARSAT-Next Generation (RNG).

Frequencies
Frequency	Bandwidth	Use	Service	Table
5300 MHz	30 MHz	RADARSAT-1	Earth Exploration-satellite	-
5405 MHz	100 MHz	RADARSAT-2	Earth Exploration-satellite	-

External Links:

Canadian Space Agency Earth Observation Satellites

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DOPRAD Radars

ESA Sentinel-1 Satellite C-band Synthetic Aperture Radar (C-SAR)

According to the European Space Agency:

"Sentinel-1 is a two satellite constellation with the prime objectives of Land and Ocean monitoring. The goal of the mission is to provide C-Band SAR data continuity following the retirement of ERS-2 and the end of the Envisat mission.

"To accomplish this the satellites carry a C-SAR sensor, which offers medium and high resolution imaging in all weather conditiions. The C-SAR is capable of obtaining night imagery and detecting small movement on the ground, which makes it useful for land and sea monitoring."

Interestingly, Sentinel-1 C-SAR data were used in 2016 to confirm that the new Millennium Tower building in San Francisco is slowly sinking.

Frequencies
Frequency	Bandwidth	Use	Service	Table
5405 MHz	100 MHz	Sentinel-1 C-SAR sensor	Earth Exploration-satellite	-

External Links:

Sentinel-1 (ESA)

Sentinel-1 satellites confirm San Francisco's Millenium Tower is sinking

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Wi-Fi

Wi-Fi utilizes various channels in the 2.4 and 5.8 GHz band (worldwide), and the 3.6 GHz band (U.S. only). For a list of which channels are available in which regions, refer to the Wikipedia article.

Wi-Fi is a trademark permitted for devices that are based upon a published standard of the IEEE 802.11 committee and that have been certified by the Wi-Fi Alliance. Wi-Fi is presently incorporated in about three billion devices. Wireless cash registers were one of the earliest applications of what is now Wi-Fi.

Wi-Fi devices operate on an unlicensed basis, generally meaning they cannot cause interference to licensed services, and must accept any interference caused to them. Wi-Fi shares bands with other unlicensed or ISM devices, such as cordless phones at 2.4 and 5.8 GHz and microwave ovens at 2.4 GHz.

Some of the key patents related to Wi-Fi are credited (in the courts at least) to the Commonwealth Scientific and Industrial Research Organisation (CSIRO) in Australia, which has collected over $400 million in royalties and legal settlements over patent rights.

Frequency Bands
Band	Use	Service	Table
2400 - 2500 MHz	Wi-Fi (802.11b, 802.11g, 802.11n)	-	-
3655 - 3700 MHz	Wi-Fi (802.11y) (U.S. only)	-	-
4910 - 5845 MHz	Wi-Fi (802.11a, 802.11h, 802.11j, 802.11n) (non-contiguous)	-	-

External Links:

IEEE 802.11 Committee

List of WLAN Channels (Wikipedia)

Wi-Fi Alliance

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2019 World Radiocommunication Conference (WRC-19) Agenda Item 1.16

1.16 to consider issues related to wireless access systems, including radio local area networks (WAS/RLAN), in the frequency bands between 5 150 MHz and 5 925 MHz, and take the appropriate regulatory actions, including additional spectrum allocations to the mobile service, in accordance with Resolution 239 [COM6/22] (WRC-15);

Frequency Bands
Band	Use	Service	Table
5150 - 5925 MHz	WRC-19 Agenda Item 1.16	-	-

External Links:

WRC-19 (International Telecommunication Union)

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RISAT-1 Indian Radar Imaging Satellite

According to the Indian Space Research Organisation:

Radar Imaging Satellite (RISAT-1), a new class of remote sensing satellite distinct from the established IRS class, is being developed by Indian Space Research Organisation (ISRO) as its first satellite imaging mission using an active radar sensor system. RISAT-1 carries a multi-mode C-band Synthetic Aperture Radar (SAR) as the sole payload. The RISAT Mission is envisaged to augment the operational remote sensing programme in the country mainly enhancing agriculture and disaster support related applications.

RISAT-1 was launched on April 26th, 2012, into a polar sun synchronous orbit of 536 km (97.552 deg inclination) with the local time of equatorial crossing at 6:00 AM and 6:00 PM, as SAR does not need sun illumination for the target. The choice of this orbit gives advantage in terms of maximizing the power generation, with lesser complexities in solar panel tracking arrangements and power system management, besides simplifying the thermal management.

Frequencies
Frequency	Bandwidth	Use	Service	Table
5350 MHz	75 MHz	RISAT-1 chirped radar	Earth Exploration-satellite	-

External Links:

PSLV-C19 RISAT-1 Launch Brochure

ISRO RISAT-1 Brochure

RISAT-1 (Wikipedia)

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Add New...

Related Documents, Links, and Multimedia:

FCC Proceeding (2)

FCC 5 GHz U-NII Notice of Proposed Rulemaking (FCC 13-22)

By this Notice of Proposed Rulemaking (NPRM), we propose to amend Part 15 of our
rules governing the operation of Unlicensed National Information Infrastructure (U-NII) devices in the 5
GHz band.1 U-NII devices are unlicensed intentional radiators that operate in the frequency bands 5.15-
5.35 GHz and 5.47-5.825 GHz, and which use wideband digital modulation techniques to provide a wide
array of high data rate mobile and fixed communications for individuals, businesses, and institutions.

Since the Commission first made available spectrum in the 5 GHz band for U-NII in 1997, we have
gained much experience with these devices. We believe that the time is now right for us to revisit our
rules, and, in this NPRM, we propose to modify certain technical requirements for U-NII devices to
ensure that these devices do not cause harmful interference and thus can continue to operate in the 5 GHz
band and make broadband technologies available for consumers and businesses.

We also seek comment on making available an additional 195 megahertz of spectrum in
the 5.35-5.47 GHz and 5.85-5.925 GHz bands for U-NII use. This could increase the spectrum available
to unlicensed devices in the 5 GHz band by approximately 35 percent and would represent a significant
increase in the spectrum available for unlicensed devices across the overall radio spectrum. The initiation
of this proceeding satisfies the requirements of Section 6406 (a) of the "Middle Class Tax Relief and Job
Creation Act of 2012” which requires the Commission to begin a proceeding to modify part 15 of title 47,
Code of Federal Regulations, to allow unlicensed U-NII devices to operate in the 5350-5470 MHz band.
We believe that an increase in capacity gained from 195 megahertz of additional spectrum, combined
with the ease of deployment and operational flexibility provided by our U-NII rules, would continue to
foster the development of new and innovative unlicensed devices, and increase wireless broadband access
and investment.

Frequencies/Bands

5150 - 5925 MHz

Document type and status: FCC proceeding (Current)
Document date or date of hyperlink query: February 22, 2013
Fcc Docket(s): ET 13-49

FCC 5 GHz U-NII Notice of Proposed Rulemaking (FCC 13-22)

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FCC 5 GHz Public Notice (FCC 16-68)

White Paper (1)

NTIA Evaluation of the 5350-5470 and 5850-5925 MHz Bands

Legislation (1)

Engineering Data

	Lower Frequency	Center Frequency	Upper Frequency
Frequency	5.35 GHz	5.405 GHz	5.46 GHz
Wavelength	5.6 cm	5.5 cm	5.5 cm
Band designator(s)	SHF; C-band (IEEE)	SHF; C-band (IEEE)	SHF; C-band (IEEE)
Isotropic collecting area	2.5 cm²	2.4 cm²	2.4 cm²
Free space loss (1 m)	47.0 dB	47.1 dB	47.2 dB
Free space loss (1 km)	107.0 dB	107.1 dB	107.2 dB
Free space loss (10 km)	127.0 dB	127.1 dB	127.2 dB
Free space loss (100 km)	147.0 dB	147.1 dB	147.2 dB
Free space loss (1000 km)	167.0 dB	167.1 dB	167.2 dB
Free space loss (35,786 km = GEO orbit)	198.1 dB	198.2 dB	198.3 dB
Free space loss (378,370 km = Moon)	218.6 dB	218.7 dB	218.8 dB