5.433 In Regions 2 and 3, in the band 3400-3600 MHz the radiolocation service is allocated on a primary basis. However, all administrations operating radiolocation systems in this band are urged to cease operations by 1985. Thereafter, administrations shall take all practicable steps to protect the fixed-satellite service and coordination requirements shall not be imposed on the fixed-satellite service.

5.435 In Japan, in the band 3620-3700 MHz, the radiolocation service is excluded.

Could not find US105

Could not find US107

US245 In the bands 3600-3650 MHz (space-to-Earth), 4500-4800 MHz (space-to-Earth), and 5850-5925 MHz (Earth-to-space), the use of the non-Federal fixed-satellite service is limited to international inter-continental systems and is subject to case-by-case electromagnetic compatibility analysis. The FCC's policy for these bands is codified at 47 CFR 2.108.

Could not find US433

G59 In the bands 902-928 MHz, 3100-3300 MHz, 3500-3650 MHz, 5250-5350 MHz, 8500-9000 MHz, 9200-9300 MHz, 13.4-14.0 GHz, 15.7-17.7 GHz and 24.05-24.25 GHz, all Federal non-military radiolocation shall be secondary to military radiolocation, except in the sub-band 15.7-16.2 GHz airport surface detection equipment (ASDE) is permitted on a co-equal basis subject to coordination with the military departments.

G110 Federal ground-based stations in the aeronautical radionavigation service may be authorized between 3500-3650 MHz when accommodation in the band 2700-2900 MHz is not technically and/or economically feasible.

SpectrumWiki

Aeronautical Radio Altimeters

According to the International Civil Aviation Organization (ICAO):

"Th[is] band is used exclusively for airborne radio altimeters (also called radar altimeters) (see Footnote 5.438), which have a vital task in automated landing for flare guidance, and as the sensor component in ground proximity warning systems. The basic function of radio altimeters is to measure the aircraft's absolute height above ground level... These radio altimeters are operational during all phases of flight."

The center frequency for radio altimeters is 4300 +/- 25 MHz. The altimeters use a power output of 20-500 mW, and have a range of up to about 5000 ft (about 1526 m). Their antenna beamwidth is 70 deg, and the pulse width is approximately 200 ns.

Frequency Bands
Band	Use	Service	Table
4200 - 4400 MHz	Radio Altimeters	Aeronautical Radionavigation	-

External Links:

Handbook on Radio Frequency Spectrum Requirements for Civil Aviation (Source: ICAO)

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4 GHz Fixed Service Band

Geostationary Fixed Satellite Service (GSO FSS)

The "C-band" is the workhorse of the Geostationary Fixed Satellite Service (GSO FSS), with 3.7—4.2 GHz the downlink band and its associated uplink 5.925—6.425 GHz. More generally, the 4—8 GHz spectrum is designated as C-band.

Cable TV networks use the C-band to provide programming to cable systems. Program package providers directly serve viewers with home satellite dish receivers (Direct-to-Home FSS or DTH-FSS, a service also available in the Ku-band, see 11.7—12.2 GHz).

Many radio stations receive programming by C-band satellite, and international telephone and data traffic travel over the satellites of the International Telecommunications Satellite Organization (Intelsat) and its competitors in the 4/6 and 11/14 GHz bands.

The C-band also is used for tracking, telemetry, and control (TTC) of satellites while transferring them to final orbit position. Satellite operators want to expand TTC to adjacent spectrum (see 3.65—3.7 GHz).

Paired Frequency Bands
Paired Bands	Use	Service	Table
3700 - 4200 MHz	C-band GSO FSS Downlink	Fixed-satellite	N
5925 - 6425 MHz	C-band GSO FSS Uplink	Fixed-satellite (Earth-to-space)	N

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Citizens Broadband Radio Service (CBRS)

The U.S. FCC has opened the 3550-3700 MHz band for sharing under an innovative three-tiered architecture. The first tier is the incumbents, which consists mainly of the U.S. military for shipborne radars. There is also limited use of the band for fixed-satellite service (FSS) receive-only earth stations above 3625 MHz.

The second tier, created by the FCC, is the Priority Access Licenses (PALs). A Priority Access License consists of a 10 MHz authorization within a single county, and PALs were auctioned by the Commission in Auction 105, which raised more than $4.5 billion in net bids. PALs are limited to the 3550-3650 MHz portion of the band.

The third tier is General Authorized Access (GAA) users, who may operate across the entire band (3550-3700 MHz), but may not cause interference to PALs or to incumbent users.

The PAL and GAA tiers must be controlled by a centralized Spectrum Access System (SAS) that enforces interference policies. Several commercials SASs are in operation.

PAL and GAA operate under a Part 96 of the FCC's rules, titled the Citizens Broadband Radio Service(CBRS). CBRS devices are referred to as CBSDs (Citizens Broadband radio Service Devices).

The WISPs and utilities that occupied the 3650-3700 MHz band under Part 90 of the FCC's rules were required to transition to CBRS (Part 96) (GAA and/or PAL), a process that was completed by 2023.

Frequency Bands
Band	Use	Service	Table
3550 - 3650 MHz	Citizens Broadband Radio Service (PAL and GAA)	Mobile	N
3650 - 3700 MHz	Citizens Broadband Radio Service (GAA only)	Mobile	N

External Links:

FCC CBRS releases

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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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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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FCC Proposed Rules for Citizens Broadband Service

According to the FCC's Notice of Proposed Rulemaking (FCC 12-148):

With this Notice of Proposed Rulemaking (Notice), we propose to create a new Citizens Broadband Service in the 3550-3650 MHz band (3.5 GHz Band) currently utilized for military and satellite operations, which will promote two major advances that enable more efficient use of radio spectrum: small cells and spectrum sharing. The 3.5 GHz Band was identified by the National Telecommunications and Information Administration (NTIA) for shared federal and non-federal use in the 2010 Fast Track Report. Our proposal builds on our experience with spectrum sharing in the television white spaces (TVWS), proposes ideas teed up in our recent Notice of Inquiry on Dynamic Spectrum Access technologies, and broadly reflects recommendations made in a recent report by the President’s Council of Advisors on Science and Technology (PCAST). We also seek comment on whether to include under these proposed new, flexible rules the neighboring 3650-3700 MHz band, which is already used for commercial broadband services. Together, these proposals would make up to 150 megahertz of contiguous spectrum available for innovative mobile and fixed wireless broadband services without displacing mission-critical incumbent systems.

Frequency Bands
Band	Use	Service	Table
3550 - 3700 MHz	Citizens Broadband Service (proposed)	-	N

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SPN-43 Shipborne Radar

The AN/SPN-43C is a U.S. Navy air traffic control (ATC) radar for large-deck amphibious ships that are capable of supporting flight operations. These vessels include aircraft carriers (CVN) and amphibious assault ships (LHA and LHD) that predominantly carry helicopters.

U.S. homeports for ships that carry the SPN-43 are Norfolk VA, San Diego CA, Bremerton WA, and Newport News VA. The SPN-43 is currently installed on 21 commissioned ships in the U.S. Navy. It may also be installed on some non-U.S. military ships.

Land-based testing and training sites for the SPN-43 are at St. Inigoes (Pax River) MD, Pascagoula MS, and Pensacola FL, per footnote US348.

The SPN-43 possesses the following technical characteristics:

-Modulation P0N (unmodulated pulses, no information transmitted)

-Tuning range 3500-3700 MHz

-Peak tx power into antenna: 1 MW (60 dBW)

-Antenna gain: 32 dBi

-Peak EIRP: 1.6 GW (92 dBW)

-Pulse width: 0.95 microseconds

-Pulse repetition rate: 1 kHz

-Duty cycle: 0.1%

-Transmit bandwidth: 1.6 MHz

-Antenna type: Rotating parabolic

-Beamwidth: 1.75 deg horizontal, 4.4 deg vertical (vertical fan beam, csc2 to 30 deg elevation)

-Polarization: Horizontal

-Antenna rotation rate: One revolution per 4 seconds

In the range 3650-3700 MHz, operation of the radar is only allowed more than 50 miles off shore.

Frequency Bands
Band	Use	Service	Table
3500 - 3700 MHz	SPN-43 shipborne air traffic control radar	Radiolocation	F

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Standard LTE Bands

The following bands have been defined by 3GPP as standard LTE bands for Frequency Division Duplex (FDD, where mobile and base stations transmit in separate bands) and Time Division Duplex (TDD, where mobiles and bases transmit and receive on the same frequency). These bands are defined in 3GPP TS 36.101 (link below).

Note that bands 15 & 16 and 30-32 are not defined, and the FDD band 29 is used for downlink-only for carrier aggregation, so it has no corresponding uplink band.

Uplinks refer to the frequencies used for handsets and other user devices to transmit to the base station, and downlinks refer to frequencies used by base stations to transmit to the user devices.

Paired Frequency Bands
Paired Bands	Use	Service	Table
452.5 - 457.5 MHz	LTE band 31 FDD uplink	Mobile	-
462.5 - 467.5 MHz	LTE band 31 FDD downlink	Mobile	-
699 - 716 MHz	LTE band 12 FDD uplink	Mobile	-
729 - 746 MHz	LTE band 12 FDD downlink	Mobile	-
703 - 748 MHz	LTE band 28 FDD uplink	Mobile	-
758 - 803 MHz	LTE band 28 FDD downlink	Mobile	-
704 - 716 MHz	LTE band 17 FDD uplink	Mobile	-
734 - 746 MHz	LTE band 17 FDD downlink	Mobile	-
746 - 756 MHz	LTE band 13 FDD downink	Mobile	-
777 - 787 MHz	LTE band 13 FDD uplink	Mobile	-
758 - 768 MHz	LTE band 14 FDD downlink	Mobile	-
788 - 798 MHz	LTE band 14 FDD uplink	Mobile	-
807 - 824 MHz	LTE band 27 FDD uplink	Mobile	-
852 - 869 MHz	LTE band 27 FDD downlink	Mobile	-
814 - 849 MHz	LTE band 26 FDD uplink	Mobile	-
859 - 894 MHz	LTE band 26 FDD downlink	Mobile	-
815 - 830 MHz	LTE band 18 FDD uplink	Mobile	-
860 - 875 MHz	LTE band 18 FDD downlink	Mobile	-
824 - 849 MHz	LTE band 5 FDD uplink	Mobile	-
869 - 894 MHz	LTE band 5 FDD downlink	Mobile	-
830 - 840 MHz	LTE band 6 FDD uplink ("band 6 is not applicable" according to the standard)	Mobile	-
875 - 885 MHz	LTE band 6 FDD downlink ("band 6 is not applicable" according to the standard)	Mobile	-
830 - 845 MHz	LTE band 19 FDD uplink	Mobile	-
875 - 890 MHz	LTE band 19 FDD downlink	Mobile	-
791 - 821 MHz	LTE band 20 FDD downlink	Mobile	-
832 - 862 MHz	LTE band 20 FDD uplink	Mobile	-
880 - 915 MHz	LTE band 8 FDD uplink	Mobile	-
925 - 960 MHz	LTE band 8 FDD downlink	Mobile	-
1427.9 - 1447.9 MHz	LTE band 11 FDD uplink	Mobile	-
1475.9 - 1495.9 MHz	LTE band 11 FDD downlink	Mobile	-
1447.9 - 1462.9 MHz	LTE band 21 FDD uplink	Mobile	-
1495.9 - 1510.9 MHz	LTE band 21 FDD downlink	Mobile	-
1525 - 1559 MHz	LTE band 24 FDD downlink	Mobile	-
1626.5 - 1660.5 MHz	LTE band 24 FDD uplink	Mobile	-
1710 - 1755 MHz	LTE band 4 FDD uplink	Mobile	-
2110 - 2155 MHz	LTE band 4 FDD downlink	Mobile	-
1710 - 1785 MHz	LTE band 3 FDD uplink	Mobile	-
1805 - 1880 MHz	LTE band 3 FDD downlink	Mobile	-
1710 - 1770 MHz	LTE band 10 FDD uplink	Mobile	-
2110 - 2170 MHz	LTE band 10 FDD downlink	Mobile	-
1749.9 - 1784.9 MHz	LTE band 9 FDD uplink	Mobile	-
1844.9 - 1879.9 MHz	LTE band 9 FDD downlink	-	-
1850 - 1910 MHz	LTE band 2 FDD uplink	Mobile	-
1930 - 1990 MHz	LTE band 2 FDD downlink	Mobile	-
1850 - 1915 MHz	LTE band 25 FDD uplink	Mobile	-
1930 - 1995 MHz	LTE band 25 FDD downlink	Mobile	-
1920 - 1980 MHz	LTE band 1 FDD uplink	Mobile	-
2110 - 2170 MHz	LTE band 1 FDD downlink	Mobile	-
2000 - 2020 MHz	LTE band 23 FDD uplink	Mobile	-
2180 - 2200 MHz	LTE band 23 FDD downlink	Mobile	-
2305 - 2315 MHz	LTE band 30 FDD uplink	Mobile	-
2350 - 2360 MHz	LTE band 30 FDD downlink	Mobile	-
2500 - 2570 MHz	LTE band 7 FDD uplink	Mobile	-
2620 - 2690 MHz	LTE band 7 FDD downlink	Mobile	-
3410 - 3490 MHz	LTE band 22 FDD uplink	Mobile	-
3510 - 3590 MHz	LTE band 22 FDD downlink	Mobile	-

Frequency Bands
Band	Use	Service	Table
703 - 803 MHz	LTE band 44 TDD	Mobile	-
717 - 728 MHz	LTE band 29 FDD unpaired downlink (carrier aggregation use only)	Mobile	-
1850 - 1910 MHz	LTE band 35 TDD	Mobile	-
1880 - 1920 MHz	LTE band 39 TDD	Mobile	-
1900 - 1920 MHz	LTE band 33 TDD	Mobile	-
1910 - 1930 MHz	LTE band 37 TDD	Mobile	-
1930 - 1990 MHz	LTE band 36 TDD	Mobile	-
2010 - 2025 MHz	LTE band 34 TDD	Mobile	-
2300 - 2400 MHz	LTE band 40 TDD	Mobile	-
2496 - 2690 MHz	LTE band 41 TDD	Mobile	-
2570 - 2620 MHz	LTE band 38 TDD	Mobile	-
3400 - 3600 MHz	LTE band 42 TDD	Mobile	-
3600 - 3800 MHz	LTE band 43 TDD	Mobile	-

External Links:

3GPP TS 36.101 specification

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UK Broadband

According to a UK Broadband press release (c. 2012):

UK Broadband, the UK’s largest holder of 4G spectrum, has today announced that it has switched on its first 4G LTE system in London. This is the first TD-LTE 3.5GHz deployment in the world and the first commercial 4G deployment in the UK. UK Broadband (UKB) is building its network using Huawei’s Time Division Long Term Evolution (TD-LTE) solution.

UKB will operate a wholesale model, working with partners to offer commercial services from May 2012 to businesses, consumers and the public sector. The network will initially cover the Southbank and Borough areas of Southwark.

The network will use UKB’s 124MHz of spectrum in LTE bands 42 and 43 (3.5GHz and 3.6GHz). This allows the deployment of 6 x 20MHz wide channels that will enable UKB to deliver LTE Advanced speeds and enough capacity across the network to deliver Next Generation Access superfast broadband speeds to a large number of users simultaneously.

The first devices, jointly developed by UKB and Huawei, include indoor and outdoor units for high-speed wireless broadband to homes and businesses within the coverage area. Multi-mode mobile devices supporting TD-LTE, FD-LTE and 3G will be available from September 2012.

“We’re very excited to be switching on our first TD-LTE system in the UK using our 4G spectrum,” said Nicholas James, UKB’s CEO. “We’re working with Huawei because we believe they have the expertise and experience we need to deliver the best solution.”

"Utilising Huawei’s equipment, UKB’s spectrum and our combined expertise, the availability of LTE in the UK from today will give a significant boost to the UK’s Government’s broadband agenda,” said Victor Zhang, CEO of Huawei UK. “We are proud to be involved in this project and are dedicated to supporting UKB and the Government to help connect more people to high speed wireless broadband networks.’’

UKB’s business model is to build bespoke LTE coverage – large or small – that delivers solutions to where there is demand for high speed wireless/mobile data capacity. Usually this will be as a result of developing a solution for an anchor or core customer.

UKB has chosen TD LTE because typically, significantly more data is downloaded than uploaded. Designed specifically to meeting the growing demand for data capacity, TD LTE allows UKB to dynamically manage the network to maximise the download capacity at all times, optimising both the technology and the wide spectrum bands it has available to deliver a very high download capacity.

Frequency Bands
Band	Use	Service	Table
3480 - 3500 MHz	UK Broadband TD-LTE	Mobile	-
3580 - 3600 MHz	UK Broadband TD-LTE	Mobile	-
3605 - 3689 MHz	UK Broadband TD-LTE	Mobile	-
3925 - 4009 MHz	UK Broadband TD-LTE	Mobile	-

External Links:

UK Broadband switches on first commercial 4G TD LTE system in the UK

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WRC 23 Agenda Item 1.2 IMT identification

"to consider identification of the frequency bands 3 300-3 400 MHz, 3 600-3 800 MHz, 6 425-7 025 MHz, 7 025-7 125 MHz and 10.0-10.5 GHz for International Mobile Telecommunications (IMT), including possible additional allocations to the mobile service on a primary basis, in accordance with Resolution 245 (WRC-19);"

Frequency Bands
Band	Use	Service	Table
3300 - 3400 MHz	Possible IMT identification	Mobile	-
3600 - 3800 MHz	Possible IMT identification	Mobile	-
6425 - 7025 MHz	Possible IMT identification	Mobile	-
7025 - 7125 MHz	Possible IMT identification	Mobile	-

External Links:

WRC-23 Agenda

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WRC-23 Agenda Item 1.3

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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SPY-1 Shipborne Air Surveillance Radar

The SPY-1 is a U.S. Navy phased array surveillance radar that is a component of the Aegis combat system. It is installed on guided missile cruisers (CG) and guided missile destroyers (DDG). Several variants of the SPY-1, including the -1A, -1B(V), -1D, and -1F are in service, modified to fit specific types of vessels. The -1F is not installed on any U.S. ships.

U.S. land-based test and training sites for the SPY-1 are at Moorestown, NJ, and Wallops Island, VA.

The SPY-1 possesses the following technical characteristics according to ITU-R Recommendation M.1465:

-Modulation: Q7N (angle-modulated, two or more digital channels, no information transmitted)

-Tuning range: 3100-3500 MHz

-Peak tx power into antenna: 4 – 6.4 MW (66 – 68 dBW)

-Antenna gain: 42 dBi

-Peak EIRP: 63 – 101 GW (108-110 dBW)

-Pulse width: 6.4 – 51.2 microseconds

-Pulse repetition rate: 0.152-6 kHz

-Duty cycle: 0.8-2.0%

-Tx bandwidth (-3 dB): 4 MHz

-Average EIRP (=peak EIRP x duty cycle): 504 MW – 2 GW (87-93 dBW)

-Minimum effective isotropic power spectral density: 126 W/Hz (51 dBm/Hz)

-Maximum effective power isotropic spectral density: 500 W/Hz (57 dBm/Hz)

-Antenna type: Phased array

-Beamwidth: 1.7 deg (azimuth and elevation)

-Polarization: Vertical

-Antenna rotation rate: N/A (electronically steered)

The SPY-1 is known to emit very high levels of out-of-band emissions outside of the 3100-3500 MHz band.

Frequency Bands
Band	Use	Service	Table
3100 - 3500 MHz	SPY-1 Shipborne Air Surveillance Radar	Radiolocation	F

Associated Files:

SPY-1 phased array antenna panels on the guided missile destroyer USS Laboon, photographed in the Chesapeake Bay near Norfolk, Virginia.

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Through-wall Radar waiver

Under a waiver granted to L-3 CyTerra, a division of L-3
Communications Corporation, the company can certify and market frequency-stepping radars in the 3100-3500 MHz band. Units must be licensed under Part 90 of the FCC rules. Terms of the waiver limit eligibility to state and local police and firefighters, and limit use to actual emergencies involving threats to safety of life, and necessary training. Another company has received an identical "me too" waiver.

Frequency Bands
Band	Use	Service	Table
3100 - 3500 MHz	L-3 CyTerra through-wall radar	Radiolocation	N

External Links:

CyTerra waiver grant

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WRC-27 consideration of EESS (passive) allocations

WRC-27 agenda item 1.19:

to consider possible primary allocations in all Regions to the Earth exploration-satellite service (passive) in the frequency bands 4 200-4 400 MHz and 8 400-8 500 MHz, in accordance with Resolution 674 (WRC-23)

Frequency Bands
Band	Use	Service	Table
4200 - 4400 MHz	WRC-27 consideration of EESS (passive) allocations	Earth Exploration-satellite	-
8400 - 8500 MHz	WRC-27 consideration of EESS (passive) allocations	Earth Exploration-satellite	-

External Links:

WRC-27 agenda (see annex 1)

Resolution 674 (WRC-23)

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Actions to support FSS Earth stations in 3400-4200 MHz (WRC-15 Agenda Item 9.1.5)

ITU WRC-15 Agenda Item 9.1.5:

"Consideration of technical and regulatory actions in order to support existing and future operation of fixed-satellite service earth stations within the band 3400-4200 MHz, as an aid to the safe operation of aircraft and reliable distribution of meteorological information in some countries in Region 1."

Frequency Bands
Band	Use	Service	Table
3400 - 4200 MHz	Actions to support FSS Earth stations in 3400-4200 MHz (WRC-15 Agenda Item 9.1.5	Fixed-satellite	-

External Links:

ITU-R Preparatory Studies for WRC-15

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Add New...

Related Documents, Links, and Multimedia:

FCC Proceeding (5)

NPRM: Enabling Innovative Small Cell Use In 3.5 GHZ Band NPRM & Order (FCC 12-148)

Further NPRM on opening up 3550-3700 MHz to spectrum sharing

Public Notice: Commission Seeks Comment on Licensing Models and Technical Requiments in the 3550-3650 MHz Band

CBRS Order on Reconsideration and Second Report & Order (FCC 16-55)

Higher Ground LLC Application for Blanket Earth Station License (FCC Order)

With this Order, we grant the application of Higher Ground LLC (Higher Ground), with conditions, for a blanket earth station license to operate up to 50,000 earth stations, known as “SatPaqs,” to communicate with the following U.S.-licensed satellites: Galaxy 3-C at the 95.05° W.L. orbital location, Galaxy 12 at the 129.0º W.L. orbital location, and Galaxy 19 at the 97.0° W.L. orbital location. In doing so, we waive the Table of Frequency Allocations to the extent necessary to permit Higher Ground to provide the services proposed in its application in the 5925-6425 MHz (Earth-to-space) and the 3700-4200 MHz (space-to-Earth) frequency bands on a non-interference basis, subject to the conditions listed below. The authorization will serve the public interest by allowing Higher Ground to provide new communications services to U.S. consumers, with safeguards designed to minimize the risk of harmful interference to primary users operating in these frequency bands. Accordingly, we deny the Petition to Deny filed by the Fixed Wireless Communications Coalition, Inc. (FWCC).

Frequencies/Bands

3700 - 4200 MHz

5925 - 6425 MHz

Document type and status: FCC proceeding (Current)
Document date or date of hyperlink query: March 10, 2017
Fcc Docket(s): SES-LIC-20150616-00357

Higher Ground LLC Application for Blanket Earth Station License (FCC Order)

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Band Plan (1)

Other (1)

Improving consumer access to mobile services at 3.6 GHz to 3.8 GHz (Ofcom Consultation, UK)

This consultation presents our initial thinking on how we could expand spectrum access for mobile services in the 3.6 – 3.8 GHz band.

We consider this band a high priority band for future mobile use, due to the large amount of spectrum available and the interest in this band for the rollout of future 5G services (the fifth generation of mobile connectivity technology, which is currently being developed).

Part of the band is already authorised for electronic communications networks (which includes mobile and fixed communications), where spectrum access is coordinated with other current spectrum users.

In this document, we set out two broad policy options that could allow mobile including 5G use in the rest of the band. In considering the future of this band, we are taking into account the services provided by existing use of fixed links and satellite services to citizen and consumers. We are seeking input from stakeholders that will inform our future policy proposals.

Frequencies/Bands

3600 - 3800 MHz

Document type and status: Other (Current)
Document date or date of hyperlink query: October 07, 2016

Improving consumer access to mobile services at 3.6 GHz to 3.8 GHz (Ofcom Consultation, UK)

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Engineering Data

	Lower Frequency	Center Frequency	Upper Frequency
Frequency	3.5 GHz	3.85 GHz	4.2 GHz
Wavelength	8.6 cm	7.8 cm	7.1 cm
Band designator(s)	SHF; S-band (IEEE)	SHF; S-band (IEEE)	SHF; C-band (IEEE)
Isotropic collecting area	5.8 cm²	4.8 cm²	4.1 cm²
Free space loss (1 m)	43.6 dB	44.2 dB	43.8 dB
Free space loss (1 km)	103.6 dB	104.2 dB	103.8 dB
Free space loss (10 km)	123.6 dB	124.2 dB	123.8 dB
Free space loss (100 km)	143.6 dB	144.2 dB	143.8 dB
Free space loss (1000 km)	163.6 dB	164.2 dB	163.8 dB
Free space loss (35,786 km = GEO orbit)	194.7 dB	195.2 dB	194.9 dB
Free space loss (378,370 km = Moon)	215.1 dB	215.7 dB	215.4 dB