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Allocations

U.S. Non-Federal-Government Allocations

7250 - 8025 MHz

U.S. Federal Government Allocations

7450 - 7550 MHz
FIXED
FIXED-SATELLITE (space-to-Earth)
METEOROLOGICAL-SATELLITE (space-to-Earth)
MARITIME MOBILE-SATELLITE (space-to-Earth) 5.461AA 5.461AB
Mobile-satellite except maritime mobile-satellite (space-to-Earth)

G104 G117

ITU Region 1 Allocations

7450 - 7550 MHz
FIXED
FIXED-SATELLITE (space-to-Earth)
METEOROLOGICAL-SATELLITE (space-to-Earth)
MOBILE except aeronautical mobile
MARITIME MOBILE-SATELLITE (space-to-Earth) 5.461AA 5.461AB

5.461A

ITU Region 2 Allocations

7450 - 7550 MHz
FIXED
FIXED-SATELLITE (space-to-Earth)
METEOROLOGICAL-SATELLITE (space-to-Earth)
MOBILE except aeronautical mobile
MARITIME MOBILE-SATELLITE (space-to-Earth) 5.461AA 5.461AB

5.461A

ITU Region 3 Allocations

7450 - 7550 MHz
FIXED
FIXED-SATELLITE (space-to-Earth)
METEOROLOGICAL-SATELLITE (space-to-Earth)
MOBILE except aeronautical mobile
MARITIME MOBILE-SATELLITE (space-to-Earth) 5.461AA 5.461AB

5.461A

SpectrumWiki

Wideband Global SATCOM (WGS) System

Defense Satellite Communication System 3 (DSCS III)

IEEE 802.15.4 HRP UWB

Unlicensed Level Probing Radars

Wideband Systems under 15.250

Possible allocations for FSS and maritime mobile-satellite service, 2015 World Radiocommunication Conference (WRC-15) Agenda Item 1.9

Possible new FSS and maritime mobile-satellite allocations, 2015 World Radiocommunication Conference (WRC-15) Agenda Item 1.9

Possible new primary EESS allocation (WRC-15 Agenda Item 1.11)

WRC-27 study for potential IMT use

Footnotes

5.461A The use of the band 7 450-7 550 MHz by the meteorological-satellite service (space-to-Earth) is limited to geostationary-satellite systems. Non-geostationary meteorological-satellite systems in this band notified before 30 November 1997 may continue to operate on a primary basis until the end of their lifetime. (WRC-97)

5.461AA The use of the frequency band 7 375-7 750 MHz by the maritime mobile-satellite service is limited to geostationary-satellite networks. (WRC 15)

5.461AB In the frequency band 7 375-7 750 MHz, earth stations in the maritime mobile-satellite service shall not claim protection from, nor constrain the use and development of, stations in the fixed and mobile, except aeronautical mobile, services. No. 5.43A does not apply. (WRC 15)

G104 In the bands 7450-7550 and 8175-8215 MHz, it is agreed that although the military space radio communication systems, which include earth stations near the proposed meteorological-satellite installations will precede the meteorological-satellite installations, engineering adjustments to either the military or the meteorological-satellite systems or both will be made as mutually required to assure compatible operations of the systems concerned.

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

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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Defense Satellite Communication System 3 (DSCS III)

According to the U.S. Space Force:

Defense Satellite Communications System (DSCS) constellation provides long haul communications to users worldwide through contested environments.

DSCS supports: the defense communications system, the military’s ground mobile forces, airborne terminals, ships at sea, and Department of Defense (DOD).

The first DSCS III satellite was launched in October 1982. The final DSCS III satellite, B6, was launched in August 2003. In all, DSCS III successfully launched 14 satellites, six of which are still operational and continue to be used in various capacities, from operational communications in Southwest Asia to research and development of ground-based support capabilities.

Space and Missile Systems Center (SMC), Los Angeles Air Force Base, Calif., sustains the DSCS Space Segment contract.

DSCS III satellites support globally distributed DOD and national security users. Modifications made to these satellites will provide substantial capacity improvements through higher power amplifiers, more sensitive receivers, and additional antenna connectivity options. The DSCS communications payload includes six independent Super High Frequency (SHF) transponder channels. Three receive and five transmit antennas provide selectable options for Earth coverage, area coverage and/or spot beam coverage. A special purpose single-channel transponder is also on board.

DSCS satellites provide the capabilities needed for effective implementation of worldwide military communications. It can adapt rapidly to dynamic operating conditions and perform under stressed environments. DSCS operates with large or small terminals. DSCS’s independent channels group users by operational needs or geographical location by allocating receiver sensitivity and transmitter power, thus providing maximum efficiency.

Paired Frequency Bands
Paired Bands	Use	Service	Table
7250 - 7750 MHz	DSCS III downlink	Mobile-satellite	F
7900 - 8400 MHz	DSCS III uplink	Mobile-satellite	F

Frequencies
Frequency	Bandwidth	Use	Service	Table
7600 MHz	-	DSCS III Beacon (A series satellites)	Mobile-satellite	F
7604.705882 MHz	-	DSCS III Beacon (B series satellites)	Mobile-satellite	F
8005.146484 MHz	-	DSCS III Channel 1 command uplink	Mobile-satellite	F
8370.146484 MHz	-	DSCS III Channel 5 command uplink	Mobile-satellite	F

External Links:

DSCS-3 (Gunter's Space Page)

DSCS-3 (fas.org)

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IEEE 802.15.4 HRP UWB

High pulse repetition frequency ultra-wideband (HPR UWB) is one of the physical layers defined for low data rate personal area network (LR-WPAN) communications in the IEEE 802.15.4 standard.

According to the FiRa Consortium:

"In challenging environments, such as parking structures, hospitals, airports and high density venues, ultra-wideband (UWB) technology outperforms other technologies in terms of accuracy, power consumption, robustness in wireless connectivity, and security, by a wide margin.

"UWB securely determines the relative position of peer devices with a very high degree of accuracy and can operate with line of sight at up to 200 meters. In contrast to narrow band wireless technologies, the use of wide bandwidth means UWB provides very stable connectivity, with little to no interference and offers highly precise positioning, even in congested multi-path signal environments.

"By calculating precise location, fine ranging based on UWB is a more secure approach to closing and opening locks, whether those locks are installed on a car door, a warehouse entryway, a conference room, or your front door."

Frequencies
Frequency	Bandwidth	Use	Service	Table
499.2 MHz	499.2 MHz	802.15.4 HRP UWB Channel 0	-	-
3494.4 MHz	499.2 MHz	802.15.4 HRP UWB Channel 1	-	-
3993.6 MHz	499.2 MHz	802.15.4 HRP UWB Channel 2	-	-
3993.6 MHz	1.3312 GHz	802.15.4 HRP UWB Channel 4	-	-
4492.8 MHz	499.2 MHz	802.15.4 HRP UWB Channel 3	-	-
6489.6 MHz	1.0816 GHz	802.15.4 HRP UWB Channel 7	-	-
6489.6 MHz	499.2 MHz	802.15.4 HRP UWB Channel 5	-	-
6988.8 MHz	499.2 MHz	802.15.4 HRP UWB Channel 6	-	-
7488 MHz	499.2 MHz	802.15.4 HRP UWB Channel 8	-	-
7987.2 MHz	1.3312 GHz	802.15.4 HRP UWB Channel 11	-	-
7987.2 MHz	499.2 MHz	802.15.4 HRP UWB Channel 9	-	-
8486.4 MHz	499.2 MHz	802.15.4 HRP UWB Channel 10	-	-
8985.6 MHz	499.2 MHz	802.15.4 HRP UWB Channel 12	-	-
9484.8 MHz	1.35497 GHz	802.15.4 HRP UWB Channel 15	-	-
9484.8 MHz	499.2 MHz	802.15.4 HRP UWB Channel 13	-	-
9984 MHz	499.2 MHz	802.15.4 HRP UWB Channel 14	-	-

External Links:

IEEE 802.15.4 standard (IEEE)

IEEE 802.15.4 (Wikipedia)

Associated Files:

802.15.4 HRP UWB PHY band allocation

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Unlicensed Level Probing Radars

The FCC has released a Notice of Proposed Rule Making that would allow downward-pointing, unlicensed level probing radars, for use both in tanks and outdoors, at 5.925-7.250, 24.05-29, and 75-85 GHz.

Proposed EIRP boresight emissions limits are:

5.925-7.250 GHz: -33 dBm/MHz average and +7 dBm across 50 MHz.
24.05-29 GHz: -14 dBm/MHz average and +26 dBm across 50 MHz
75-85 GHz: -3 dBm/MHz average and +34 dBm across 50 MHz

Proposed average emissions limits to the sides and upward are:

5.925-7.250 GHz: -55 dBm/MHz
24.05-29 GHz: -41.3 dBm/MHz
75-85 GHz: -41.3 dBm/MHz

Frequency Bands
Band	Use	Service	Table
5925 - 7250 MHz	-	-	N
24.05 - 29 GHz	-	-	N
75 - 85 GHz	-	-	N

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Wideband Systems under 15.250

Part 15 of the FCC's rules accommodates operation of wideband systems in this band. The -10 dB bandwidth of the systems must be at least 50 MHz, but must be fully contained within 5925-7250 MHz. Average power of the devices is limited to -41.3 dBm. Peak power can be as high as 0 dBm across 50 MHz, which makes the band suitable for devices that generate a wideband signal by emitting a train of short pulses. Devices under this rule section may not be operated aboard aircraft or satellites.

Frequency Bands
Band	Use	Service	Table
5925 - 7250 MHz	Wideband systems (FCC part 15.250)	-	N

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Possible allocations for FSS and maritime mobile-satellite service, 2015 World Radiocommunication Conference (WRC-15) Agenda Item 1.9

1.9 to consider, in accordance with Resolution COM6/15 (WRC-12):

1.9.1 possible new allocations to the fixed-satellite service in the frequency bands 7 150-7 250 MHz (space-to-Earth) and 8 400-8 500 MHz (Earth-to-space), subject to appropriate sharing conditions;

1.9.2 the possibility of allocating the bands 7 375-7 750 MHz and 8 025-8 400 MHz to the maritime-mobile satellite service and additional regulatory measures, depending on the results of appropriate studies;

Frequency Bands
Band	Use	Service	Table
7150 - 7250 MHz	Agenda Item 1.9.1	Fixed-satellite	-
7375 - 7750 MHz	Agenda Item 1.9.2 (maritime mobile-satellite)	Mobile-satellite	-
8025 - 8400 MHz	Agenda Item 1.9.2 (maritime mobile-satellite)	Mobile-satellite	-
8400 - 8500 MHz	Agenda Item 1.9.1	Fixed-satellite	-

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Possible new FSS and maritime mobile-satellite allocations, 2015 World Radiocommunication Conference (WRC-15) Agenda Item 1.9

Frequency Bands
Band	Use	Service	Table
7150 - 7250 MHz	WRC-15 Agenda Item 1.9.1	Fixed-satellite	-
8400 - 8500 MHz	WRC-15 Agenda Item 1.9.1	Fixed-satellite	-

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Possible new primary EESS allocation (WRC-15 Agenda Item 1.11)

WRC-27 study for potential IMT use

WRC-27 agenda item 1.7:

to consider studies on sharing and compatibility and develop technical conditions for the use of International Mobile Telecommunications (IMT) in the frequency bands 4 400-4 800 MHz, 7 125-8 400 MHz (or parts thereof), and 14.8-15.35 GHz taking into account existing primary services operating in these, and adjacent, frequency bands, in accordance with Resolution 256 (WRC-23)

Frequency Bands
Band	Use	Service	Table
4400 - 4800 MHz	WRC-27 study for potential IMT use	Mobile	-
7125 - 8400 MHz	WRC-27 study for potential IMT use	Mobile	-
14.8 - 15.35 GHz	WRC-27 study for potential IMT use	Mobile	-

External Links:

Resolution 256 (WRC-23)

WRC-27 Agenda (see Annex 1)

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Related Documents, Links, and Multimedia:

FCC Proceeding (2)

Further Notice of Proposed Rule Making on Regulations for Level Probing Radars

In this Further Notice of Proposed Rule Making (FNPRM), we are expanding the scope of
the above-referenced proceeding to propose a set of technical rules for the operation of unlicensed
level probing radars (LPR) in several frequency bands. LPR devices are low-power radars that
measure the level (relative height) of various substances in man-made or natural containments. In
open-air environments, LPR devices may be used to measure levels of materials such as coal piles or
water basin levels. An LPR device also may be installed inside an enclosure, e.g., a tank made of
materials such as steel or fiberglass and commonly referred to as a tank level probing radar (TLPR)
that could be filled with liquids or granulates. In the Notice of Proposed Rule Making and Order
(Notice and Order) in this proceeding, we proposed rules applicable only to TLPR devices for
operation in the 77-81 GHz band inside steel and concrete tanks, as that was the use requested by the
initial proponents. During the pendency of the rulemaking proceeding, but outside this proceeding, we received waiver requests and other inquiries regarding outdoor use on additional frequencies
under existing Part 15 rules for unlicensed devices.4 To address the apparent need for a
comprehensive and consistent approach to LPR devices, we are proposing in this FNPRM rules that
would apply to the operation of LPR devices installed in both open-air environments and inside
storage tanks in the following frequency bands: 5.925-7.250 GHz, 24.05-29.00 GHz, and 75-85 GHz.

Frequencies/Bands

5925 - 7250 MHz

24.05 - 29 GHz

75 - 85 GHz

Document type and status: FCC proceeding (Current)
Document date or date of hyperlink query: March 28, 2012
Fcc Docket(s): ET 10-23

Further Notice of Proposed Rule Making on Regulations for Level Probing Radars

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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)

Engineering Data

	Lower Frequency	Center Frequency	Upper Frequency
Frequency	7.25 GHz	7.6375 GHz	8.025 GHz
Wavelength	4.1 cm	3.9 cm	3.7 cm
Band designator(s)	SHF; C-band (IEEE)	SHF; C-band (IEEE)	SHF; X-band (IEEE)
Isotropic collecting area	1.4 cm²	1.2 cm²	1.1 cm²
Free space loss (1 m)	49.9 dB	50.1 dB	50.0 dB
Free space loss (1 km)	109.9 dB	110.1 dB	110.0 dB
Free space loss (10 km)	129.9 dB	130.1 dB	130.0 dB
Free space loss (100 km)	149.9 dB	150.1 dB	150.0 dB
Free space loss (1000 km)	169.9 dB	170.1 dB	170.0 dB
Free space loss (35,786 km = GEO orbit)	201.0 dB	201.2 dB	201.1 dB
Free space loss (378,370 km = Moon)	221.5 dB	221.7 dB	221.6 dB