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Allocations

Intro to Allocations

U.S. Non-Federal-Government Allocations

4990 - 5000 MHz
RADIO ASTRONOMY US74
Space research (passive)

US246

U.S. Federal Government Allocations

4990 - 5000 MHz
RADIO ASTRONOMY US74
Space research (passive)

US246

ITU Region 1 Allocations

4990 - 5000 MHz
FIXED
MOBILE except aeronautical mobile
RADIO ASTRONOMY
Space research (passive)

5.149

ITU Region 2 Allocations

4990 - 5000 MHz
FIXED
MOBILE except aeronautical mobile
RADIO ASTRONOMY
Space research (passive)

5.149

ITU Region 3 Allocations

4990 - 5000 MHz
FIXED
MOBILE except aeronautical mobile
RADIO ASTRONOMY
Space research (passive)

5.149

SpectrumWiki

4.9 GHz Public Safety Spectrum

Military Troposcatter Systems

802.11/WLAN/Wi-Fi/WiGig

WRC-23 Agenda Item 1.1

Footnotes

5.149 In making assignments to stations of other services to which the bands:
13 360-13 410 kHz,
25 550-25 670 kHz,
37.5-38.25 MHz,
73-74.6 MHz in Regions 1 and 3,
150.05-153 MHz in Region 1,
322-328.6 MHz,
406.1-410 MHz,
608-614 MHz in Regions 1 and 3,
1 330-1 400 MHz,
1 610.6-1 613.8 MHz,
1 660-1 670 MHz,
1 718.8-1 722.2 MHz,
2 655-2 690 MHz,
3 260-3 267 MHz,
3 332-3 339 MHz,
3 345.8-3 352.5 MHz,
4 825-4 835 MHz, 4 950-4 990 MHz,
4 990-5 000 MHz,
6 650-6 675.2 MHz,
10.6-10.68 GHz,
14.47-14.5 GHz,
22.01-22.21 GHz,
22.21-22.5 GHz,
22.81-22.86 GHz,
23.07-23.12 GHz,
31.2-31.3 GHz,
31.5-31.8 GHz in Regions 1 and 3,
36.43-36.5 GHz,
42.5-43.5 GHz,
48.94-49.04 GHz,
76-86 GHz,
92-94 GHz,
94.1-100 GHz, 102-109.5 GHz,
111.8-114.25 GHz,
128.33-128.59 GHz,
129.23-129.49 GHz,
130-134 GHz,
136-148.5 GHz,
151.5-158.5 GHz,
168.59-168.93 GHz,
171.11-171.45 GHz,
172.31-172.65 GHz,
173.52-173.85 GHz,
195.75-196.15 GHz,
209-226 GHz,
241-250 GHz,
252-275 GHz
are allocated, administrations are urged to take all practicable steps to protect the radio astronomy service from harmful interference. Emissions from spaceborne or airborne stations can be particularly serious sources of interference to the radio astronomy service (see Nos. 4.5 and 4.6 and Article 29). (WRC 07)

US74 In the bands 25.55-25.67, 73-74.6, 406.1-410, 608-614, 1400-1427, 1660.5-1670, 2690-2700, and 4990-5000 MHz, and in the bands 10.68-10.7, 15.35-15.4, 23.6-24.0, 31.3-31.5, 86-92, 100-102, 109.5-111.8, 114.25-116, 148.5-151.5, 164-167, 200-209, and 250-252 GHz, the radio astronomy service shall be protected from unwanted emissions only to the extent that such radiation exceeds the level which would be present if the offending station were operating in compliance with the technical standards or criteria applicable to the service in which it operates. Radio astronomy observations in these bands are performed at the locations listed in US385.

US246 No station shall be authorized to transmit in the following bands: 73-74.6 MHz, 608-614 MHz, except for medical telemetry equipment¹ and white space devices,² 1400-1427 MHz, 1660.5-1668.4 MHz, 2690-2700 MHz, 4990-5000 MHz, 10.68-10.7 GHz, 15.35-15.4 GHz, 23.6-24 GHz, 31.3-31.8 GHz, 50.2-50.4 GHz, 52.6-54.25 GHz, 86-92 GHz, 100-102 GHz, 109.5-111.8 GHz, 114.25-116 GHz, 148.5-151.5 GHz, 164-167 GHz, 182-185 GHz, 190-191.8 GHz, 200-209 GHz, 226-231.5 GHz, 250-252 GHz.

¹Medical telemetry equipment shall not cause harmful interference to radio astronomy operations in the band 608-614 MHz and shall be coordinated under the requirements found in 47 CFR 95.1119.

²White space devices shall not cause harmful interference to radio astronomy operations in the band 608-614 MHz and shall not operate within the areas described in 47 CFR 15.712(h).

SpectrumWiki

4.9 GHz Public Safety Spectrum

According to the FCC:

In 2002, the Commission allocated fifty megahertz of spectrum in the 4940-4990 MHz band (4.9 GHz band) for fixed and mobile services (except aeronautical mobile service) and designated this band for use in support of public safety. Non-traditional public safety entities, such as utilities and commercial entities, and the Federal Government may enter into sharing arrangements with eligible traditional public safety entities to use the 4.9 GHz band in support of their missions regarding homeland security and protection of life and property.

The 4.9 GHz band supports a wide variety of broadband applications. The following the types of uses have primary status in the 4.9 GHz band (however, all licensees will make every practical effort to protect radio astronomy operations identified in the Table of Frequency Allocations):

-Wireless LANs for incident scene management (ad hoc mobile networks)
-Mesh networks
-Wi-fi hotspots
-Voice over IP (VoIP)
-Temporary fixed communications
-Permanent fixed point-to-point/multipoint links that deliver broadband service
-Permanent fixed point-to-point video surveillance
-Permanent fixed point-to-point/multipoint backhaul of broadband traffic originating from 700 MHz public safety broadband networks

The following types of uses have secondary status to primary uses of the band:
-Permanent fixed point-to-point/multipoint links that deliver narrowband traffic
-Permanent fixed point-to-point/multipoint backhaul of traffic originating from public safety bands not designated for broadband (i.e. public safety VHF, UHF, narrowband 700 MHz and 800 MHz) to other networks

Rules for the 4.9 GHz band are in 47 C.F.R. Part 90, Sections 90.1201 through 90.1217

Frequency Bands
Band	Use	Service	Table
4940 - 4990 MHz	4.9 GHz Public Safety Spectrum	Mobile	-
4940 - 4990 MHz	4.9 GHz Public Safety Spectrum	Fixed	-

External Links:

FCC 4.9 GHz Public Safety Spectrum Web site

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Military Troposcatter Systems

802.11/WLAN/Wi-Fi/WiGig

Wireless LANS utilize various channels in the 2.4, 5, and 6 GHz bands (multiple countries), and (in theory) 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 - 2495 MHz	Wireless LANs	-	-
3655 - 3700 MHz	Wireless LANS (U.S. only; standardized but not used)	-	-
4910 - 4990 MHz	Wireless LANs (Japan) (U.S. public safety 4940-4990)	-	-
5030 - 5090 MHz	WLANs (Japan, 2002-2017)	-	-
5150 - 5350 MHz	Wireless LANs (U-NII-1 and U-NII-2A)	-	-
5470 - 5895 MHz	Wireless LANs (U-NII-2C, U-NII-3, U-NII-4)	-	-
5925 - 7125 MHz	Wireless LANs (U-NII-5, U-NII-6, U-NII-7, U-NII-8)	-	-
42.39 - 46.71 GHz	Wireless LANs (WiGig)	-	-
57.24 - 74.52 GHz	Wireless LANs (WiGig)	-	-

External Links:

List of WLAN Channels (Wikipedia)

Wi-Fi Alliance

IEEE 802.11 Committee

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WRC-23 Agenda Item 1.1

"to consider, based on the results of the ITU-R studies, possible measures to address, in the frequency band 4 800-4 990 MHz, protection of stations of the aeronautical and maritime mobile services located in international airspace and waters from other stations located within national territories, and to review the pfd criteria in No. 5.441B in accordance with Resolution 223 (Rev.WRC-19);"

Frequency Bands
Band	Use	Service	Table
4800 - 4990 MHz	WRC-23 Agenda Item 1.1	-	-

External Links:

WRC-23 Agenda

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Related Documents, Links, and Multimedia:

FCC Proceeding (2)

FCC 4.9 GHz Fourth R&O and Fifth Further NPRM

In this Fourth Report and Order and Fifth Further Notice of Proposed Rulemaking (Fourth Report and Order and Fifth Further Notice, respectively), we first adopt rule changes to Part 90 of the Commission’s rules pertaining to public safety operations in the 4940 4990 MHz (4.9 GHz) band to clarify, as well as correct certain provisions in the technical rules and several entries in the Public Safety Pool Frequency Table and associated list of limitations. We next seek comment on specific proposals designed to establish appropriate frequency coordination procedures for 4.9 GHz operations and to encourage improved spectrum efficiency and greater use of the 4.9 GHz band. These steps are part of our continuing effort to provide clear and concise rules that facilitate and promote the deployment of new wireless technologies, devices and services.1 In addition, given directives in the Middle Class Tax Relief and Job Creation Act of 2012 (“Spectrum Act”)2 to develop a nationwide interoperable public safety broadband network, we invite comment on how the 4.9 GHz band can best be used to complement this network.

Frequencies/Bands

4940 - 4990 MHz

Document type and status: FCC proceeding (Current)
Document date or date of hyperlink query: July 19, 2012
Fcc Docket(s): WP Docket No. 07-100, PS Docket No. 06-229, WT Docket No. 06-150

FCC 4.9 GHz Fourth R&O and Fifth Further NPRM

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FCC WRC-12 Notice of Proposed Rulemaking (FCC 15-50)

In the Notice of Proposed Rulemaking (WRC-12 Notice), we propose to amend Parts 2, 15, 80, 90, 97, and 101 of the Commission’s rules to implement allocation decisions from the WRC-12 Final Acts and make certain updates to our rules. Specifically, we propose to:

• Allocate the 8.3-11.3 kHz band to the meteorological aids service on a primary basis.

• Allocate the 472-479 kHz band (630 meter band) to the amateur service on a secondary basis.

• Amend the amateur service rules to provide for use of the 135.7-137.8 kHz (2200 meter) and 472-479 kHz (630 meter) bands. Amateur stations would share the band with power line carrier (PLC) systems operated by electric utilities. Amateur stations would be permitted to operate in these bands at fixed locations when separated from electric transmission lines by a specified distance.

• Amend Part 80 of the Commission’s rules to authorize radio buoy operations in the 1900-2000 kHz band under a ship station license.

• Limit the use of the 495-505 kHz band to the maritime mobile service.

• Allocate seven frequency bands (4.438-4.488 MHz, 5.25-5.275 MHz, 16.1-16.2 MHz, 24.45-24.65 MHz, 26.2-26.42 MHz, 41.015-41.665 MHz, and 43.35-44 MHz) to the radiolocation service (RLS) on a primary basis for Federal and non-Federal use, allocate the 13.45-13.55 MHz band to the RLS on a secondary basis for Federal and non-Federal use, limit the use of these RLS allocations to oceanographic radars, require that these radars not cause harmful interference to, or claim protection from, existing and future stations in the incumbent fixed and mobile services, and amend Part 90 of the Commission’s rules accordingly.

• Reallocate the 156.7625-156.7875 MHz (AIS 3) and 156.8125-156.8375 MHz (AIS 4) bands to the MSS (Earth-to-space) on a primary basis for Federal and non-Federal use to allow for greater probability of vessel tracking, with resulting benefits to maritime safety and security.

• Seek comment on the ability of Federal/non-Federal AMT stations to share spectrum with the incumbent services in the 4400-4940 MHz and 5925-6700 MHz bands.

• Extend the AM(R)S allocation from the 5091-5150 MHz band (adopted in the WRC-07 R&O) by also allocating the 5000-5091 MHz range to the AM(R)S on a primary basis for Federal and non-Federal use. AM(R)S use of the smaller 5000-5030 MHz range would extend the tuning range for AeroMACS, with the use of the 5010-5030 MHz band limited to those requirements that cannot be meet in the 5000-5010 MHz and 5091-5150 MHz bands. AM(R)S use of the 5030-5091 MHz band would support line-of-sight control links for unmanned aircraft.

• Allocate the 7850-7900 MHz band to the meteorological-satellite service (space-to-Earth) on a primary basis for Federal use.

• Allocate the 15.4-15.7 GHz band to the RLS on a primary basis for Federal use.

• Allocate the 22.55-23.15 GHz band to the space research service (SRS) (Earth-to-space) on a primary basis for Federal and non-Federal use and allocate the 25.5-27 GHz band to the SRS (space-to-Earth) on a primary basis for non-Federal use.

• Delete the aeronautical mobile service allocation from the 37-38 GHz band.

• Encourage operators of fixed stations operating in the 81-86 GHz and 92-94 GHz bands to take all reasonable steps to ensure that their unwanted emissions power in the 86-92 GHz band does not exceed the levels recommended by WRC-12.

Frequencies/Bands

8.3 - 11.3 kHz

135.7 - 137.8 kHz

472 - 479 kHz

495 - 505 kHz

1900 - 2000 kHz

4438 - 4488 kHz

5250 - 5275 kHz

13450 - 13550 kHz

16100 - 16200 kHz

24450 - 24650 kHz

26200 - 26420 kHz

41.015 - 41.665 MHz

43.35 - 44 MHz

156.775 MHz

156.825 MHz

4400 - 4940 MHz

5000 - 5150 MHz

5925 - 6700 MHz

7850 - 7900 MHz

15.4 - 15.7 GHz

22.55 - 23.15 GHz

25.5 - 27 GHz

37 - 38 GHz

86 - 92 GHz

275 - 3000 GHz

Document type and status: FCC proceeding (Current)
Document date or date of hyperlink query: July 29, 2015

FCC WRC-12 Notice of Proposed Rulemaking (FCC 15-50)

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Other (1)

The Very Large Array Radio Telescope

The Karl G. Jansky Very Large Array (VLA) near Socorro, New Mexico, is capable of observing cosmic radio emissions at any frequency within the range of 1-50 GHz, but has regulatory protections only in bands allocated to the radio astronomy service. The VLA is operated by the National Radio Astronomy Observatory, and is funded by the National Science Foundation.

Frequencies/Bands

1400 - 1427 MHz

1610.6 - 1613.8 MHz

1660 - 1670 MHz

2655 - 2700 MHz

4990 - 5000 MHz

10.68 - 10.7 GHz

15.35 - 15.4 GHz

22.21 - 22.5 GHz

23.6 - 24 GHz

31.3 - 31.8 GHz

42.5 - 43.5 GHz

Services

Radio Astronomy

Document type and status: Other (Current)
Document date or date of hyperlink query: January 19, 2012

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Engineering Data

	Lower Frequency	Center Frequency	Upper Frequency
Frequency	4.99 GHz	4.995 GHz	5 GHz
Wavelength	6.0 cm	6.0 cm	6.0 cm
Band designator(s)	SHF; C-band (IEEE)	SHF; C-band (IEEE)	SHF; C-band (IEEE)
Isotropic collecting area	2.9 cm²	2.9 cm²	2.9 cm²
Free space loss (1 m)	46.4 dB	46.4 dB	46.4 dB
Free space loss (1 km)	106.4 dB	106.4 dB	106.4 dB
Free space loss (10 km)	126.4 dB	126.4 dB	126.4 dB
Free space loss (100 km)	146.4 dB	146.4 dB	146.4 dB
Free space loss (1000 km)	166.4 dB	166.4 dB	166.4 dB
Free space loss (35,786 km = GEO orbit)	197.5 dB	197.5 dB	197.5 dB
Free space loss (378,370 km = Moon)	218.0 dB	218.0 dB	218.0 dB