5.458 In the band 6 425-7 075 MHz, passive microwave sensor measurements are carried out over the oceans. In the band 7 075-7 250 MHz, passive microwave sensor measurements are carried out. Administrations should bear in mind the needs of the Earth exploration-satellite (passive) and space research (passive) services in their future planning of the bands 6 425-7 075 MHz and 7 075-7 250 MHz.

5.459 Additional allocation: in the Russian Federation, the frequency bands 7 100-7 155 MHz and 7 190 7 235 MHz are also allocated to the space operation service (Earth-to-space) on a primary basis, subject to agreement obtained under No. 9.21. In the frequency band 7 190-7 235 MHz, with respect to the Earth exploration-satellite service (Earth-to-space), No. 9.21 does not apply. (WRC 15)

US262 The band 7145-7190 MHz is also allocated to the space research service (deep space) (Earth-to-space) on a secondary basis for non-Federal use. Federal and non-Federal use of the bands 7145-7190 MHz and 34.2-34.7 GHz by the space research service (deep space) (Earth-to-space) and of the band 31.8-32.3 GHz by the space research service (deep space) (space-to-Earth) is limited to Goldstone, CA (35° 20' N, 116° 53' W).

G116 The band 7125-7155 MHz is also allocated for Earth-to-space transmissions in the Space Operations Service at a limited number of sites (not to exceed two), subject to established coordination procedures.

SpectrumWiki

NTIA Spectrum Use Summary

The federal agencies use this band for fixed point-to-point microwave communication systems for national and military test range communications, and the remote transmission of radar video and other data for functions such as weather, vessel traffic control in harbor areas, and hydroelectric grid power management. This includes the Federal Aviation Administration use of this band for fixed point-to-point microwave communications networks to connect remote long-range aeronautical radionavigation radars to air traffic control centers.

The National Aeronautics and Space Administration and the National Oceanographic and Atmospheric Administration use the 6425-7250 MHz band for passive sensing of the Earth from space using microwave radiometers to obtain measurements of sea surface temperature which is a key component in weather forecasting and climatological studies. This band is used in conjunction with passive sensing bands around 10.6, 18.7, 23.8 and 36 GHz to obtain several important climatological parameters.

The NTIA does not issue information on the use of specific band segments in the 7/8 GHz band for fixed links, but the following information is available in a 2000 NTIA Report (NTIA Report 00-378) regarding government fixed service use in the 7125-8500 MHz range:

The FAA has 4,010 fixed assignments, including the radio communications link (RCL) system, a nationwide network used to connect air traffic controllers with communications and radar data from remote radar sites. The Air Force has 710 fixed assignments, used to support a large number of activities on numerous test and training ranges. The Navy has 800 fixed assignments, used mainly in voice and data links, ground forces communication, and land-line back up.

The Army has 450 fixed assignments, used for video scoring, closed circuit TV (security), point-to-point communications training, and for administrative traffic.

DOE has 1,200 fixed assignments used for system control and data acquisition (SCADA) for electric power distribution networks, perimeter security surveillance, laboratory telecommunication systems, and test site surveillance. Justice has 400 fixed assignments, used for fixed backbone nets used in law enforcement communications.

The Coast Guard has 160 fixed assignments, used to relay maritime radar and
communications needed for safety and navigation purposes in harbors and other critical locations. TVA has 140 fixed assignments, used for SCADA for electric power distribution systems.

Frequency Bands
Band	Use	Service	Table
7125 - 7145 MHz	NTIA Spectrum Use Summary	-	F

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NASA Deep Space Network (DSN)

According to NASA:

"The NASA Deep Space Network - or DSN - is an international network of antennas that supports interplanetary spacecraft missions and radio and radar astronomy observations for the exploration of the solar system and the universe. The network also supports selected Earth-orbiting missions.

"The DSN currently consists of three deep-space communications facilities placed approximately 120 degrees apart around the world: at Goldstone, in California's Mojave Desert; near Madrid, Spain; and near Canberra, Australia. This strategic placement permits constant observation of spacecraft as the Earth rotates, and helps to make the DSN the largest and most sensitive scientific telecommunications system in the world."

Frequency Bands
Band	Use	Service	Table
25.5 - 27 GHz	DSN K-Band Downlink (from spacecraft less than 2 million km from Earth)	Space Research	F

Paired Frequency Bands
Paired Bands	Use	Service	Table
2025 - 2110 MHz	DSN S-Band Uplink (to spacecraft less than 2 million km from Earth)	Space Research	F
2200 - 2290 MHz	DSN S-Band Downlink (from spacecraft less than 2 million km from Earth)	Space Research (space-to-Earth)	F
2110 - 2120 MHz	DSN S-Band Uplink (to spacecraft more than 2 million km from Earth)	Space Research	F
2290 - 2300 MHz	DSN S-Band Downlink (from spacecraft more than 2 million km from Earth)	Space Research (deep space)	F
7145 - 7190 MHz	DSN X-Band Uplink (to spacecraft more than 2 million km from Earth)	Space Research	F
8400 - 8450 MHz	DSN X-Band Downlink (from spacecraft more than 2 million km from Earth)	Space Research (deep space)	F
7190 - 7235 MHz	DSN X-Band Uplink (to spacecraft less than 2 million km from Earth)	Space Research	F
8450 - 8500 MHz	DSN X-Band Downlink (from spacecraft less than 2 million km from Earth)	Space Research (space-to-Earth)	F
31.8 - 32.3 GHz	DSN Ka-Band Downlink (from spacecraft more than 2 million km from Earth)	Space Research (deep space)	F
34.2 - 34.7 GHz	DSN Ka-Band Uplink (to spacecraft more than 2 million km from Earth)	Space Research	F

External Links:

NASA Deep Space Network

NASA DSN Frequency and Channel Assignments (DSN 810-005 part 201)

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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)

ITU World Radiocommunication Conference 2015 Agenda Item 1.11:

"To consider a primary allocation for the Earth exploration-satellite service (Earth-to-space) in the 7-8 GHz range, in accordance with Resolution 650 (WRC-12)"

Frequency Bands
Band	Use	Service	Table
7000 - 8000 MHz	Possible new primary EESS allocation (WRC-15 agenda item 1.11)	Earth Exploration-satellite	-

External Links:

ITU-R Preparatory Studies for WRC-15

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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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Add New...

Related Documents, Links, and Multimedia:

FCC Proceeding (1)

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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Other (1)

Engineering Data

	Lower Frequency	Center Frequency	Upper Frequency
Frequency	7.145 GHz	7.19 GHz	7.235 GHz
Wavelength	4.2 cm	4.2 cm	4.1 cm
Band designator(s)	SHF; C-band (IEEE)	SHF; C-band (IEEE)	SHF; C-band (IEEE)
Isotropic collecting area	1.4 cm²	1.4 cm²	1.4 cm²
Free space loss (1 m)	49.5 dB	49.6 dB	49.6 dB
Free space loss (1 km)	109.5 dB	109.6 dB	109.6 dB
Free space loss (10 km)	129.5 dB	129.6 dB	129.6 dB
Free space loss (100 km)	149.5 dB	149.6 dB	149.6 dB
Free space loss (1000 km)	169.5 dB	169.6 dB	169.6 dB
Free space loss (35,786 km = GEO orbit)	200.6 dB	200.7 dB	200.7 dB
Free space loss (378,370 km = Moon)	221.1 dB	221.1 dB	221.1 dB