13553-13567 kHz	(centre frequency 13560kHz),
26957-27283 kHz	(centre frequency 27120 kHz),
40.66-40.70 MHz	(centre frequency 40.68 MHz),
902-928 MHz	in Region 2 (centre frequency 915 MHz),
2400-2500 MHz	(centre frequency 2450 MHz),
5725-5875 MHz	(centre frequency 5800 MHz), and
24-24.25 GHz	(centre frequency 24.125 GHz)

are also designated for industrial, scientific and medical (ISM) applications. Radiocommunication services operating within these bands must accept harmful interference which may be caused by these applications. ISM equipment operating in these bands is subject to the provisions of No. 15.13.

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.

SpectrumWiki

24 GHz Market Area Service

According to the FCC:

The 24 GHz Market Area service was formerly known as Digital Electronic Message Service (DEMS). In March of 1997 the Commission adopted rules amending its Table of Frequency Allocations and Part 101 of its rules regarding Fixed Microwave Services to permit Fixed Service use of the 24.25 – 24.45 GHz and 25.05 – 25.25 GHz band ("24 GHZ band"). This change facilitated the relocation of DEMS from the 18.82 – 18.92 GHz and 19.16 – 19.26 GHz ("18 GHz band") to the 24 GHz band. DEMS under the Order was renamed the "24 GHz Service" and broadly defined as a radio communications service that may encompass any digital fixed service. The 24 GHz Service consists of licenses in 172 Economic Areas (EAs) as defined by the Department of Commerce and four FCC defined EA-like areas.

Each EA will accommodate five licenses, with each license consisting of a pair of 40 megahertz channels(a total of 80 MHz). The licensees are permitted to partition and/or disaggregate their licenses. Licenses are issued for a 10 year term. Demonstration that licensees are providing substantial service is required for renewal of licenses.

The FCC auctioned 880 24 GHz licenses during Auction 56, held on 7/28/2004.

The FCC requires most wireless telecommunications services licensees 1) to construct their authorized system or meet specific coverage requirements within a given time period and 2) to notify the Commission that the requirement has been met. This time period varies depending on the radio service in which the license is held.

Frequency Bands
Band	Use	Service	Table
24.25 - 24.45 GHz	24 GHz Service	Fixed	N
25.05 - 25.25 GHz	24 GHz Service	Fixed	N

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Industrial, Scientific, and Medical Devices (ISM, FCC Part 18)

Part 18 (section 18.301) of the FCC rules designate certain bands for high-power Industrial, Scientific, and Medical (ISM) devices. These devices generate significant radio energy, but not for telecommunications purposes. Examples includes microwave ovens, industrial heaters, medical diathermy, jewelry cleaners, and RFID tags.

ISM devices may be operated in most frequency bands subject to strict power limits, but are allowed unlimited power in these eleven specially-designated ISM bands.

Frequency Bands
Band	Use	Service	Table
6765 - 6795 kHz	ISM	-	-
13553 - 13567 kHz	ISM	-	-
26957 - 27120 kHz	ISM	-	-
40.66 - 40.7 MHz	ISM	-	-
902 - 928 MHz	ISM	-	-
2400 - 2500 MHz	ISM (particularly microwave ovens)	-	-
5725 - 5875 MHz	ISM	-	-
24 - 24.25 GHz	ISM	-	-
61 - 61.5 GHz	ISM	-	-
122 - 123 GHz	ISM	-	-
244 - 246 GHz	ISM	-	-

External Links:

47 CFR 18.301

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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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Airport Body Scanners

Under an FCC waiver (link below) issued to SafeView, Inc., since acquired by L-3 Security & Detection Systems, full-body airport scanners can use repeated sweeps over the range 24.25-30 GHz to detect objects hidden underneath clothes. These units are referred to as millimeter wave scanners by the U.S. Transportation Security Administration (TSA), but don't actually operate in the millimeter wave band (30-300 GHz).

Quoting from the FCC waiver: "The SafeView SafeScout imaging device is a security portal that uses imaging technology to detect weapons or contraband carried on an individual’s person, including non-metallic objects or explosives, which might otherwise require intrusive manual searches or be missed entirely by existing metal detectors. A person to be scanned by the SafeView device steps briefly into a transparent, upright cylinder seven feet high by four feet in diameter. Two vertical antenna masts rotate around the person over a 2-second interval. Each antenna element in turn sweeps from 24.25 to 30 GHz, operating for approximately six microseconds per sweep. The device measures reflections of the radio signals from the subject and calculates an image that shows hidden objects."

Frequency Bands
Band	Use	Service	Table
24.25 - 30 GHz	Airport body scanners	-	N

External Links:

Grant of waver to SafeView, Inc,

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Possible MSS Allocations (WRC-15 Agenda Item 1.10)

Agenda item 1.10 of the 2015 World Radiocommunication Conference:

"to consider spectrum requirements and possible additional spectrum allocations for the mobile-satellite service in the Earth-to-space and space-to-Earth directions, including the satellite component for broadband applications, including International Mobile Telecommunications (IMT), within the frequency range 22 GHz to 26 GHz, in accordance with Resolution 234 (WRC-12)"

Frequency Bands
Band	Use	Service	Table
22 - 26 GHz	Possible MSS allocations (WRC-15 agenda item 1.10)	Mobile-satellite	-

External Links:

ITU-R Preparatory Studies for WRC-15

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Related Documents, Links, and Multimedia:

FCC Proceeding (3)

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 Above 24 GHz Mobile Radio Services Notice of Inquiry

In this Notice of Inquiry, we begin a proceeding to examine the potential for the provision of mobile radio services in bands above 24 GHz. As technologies continue to evolve, innovators are working to tap into the potential of using high-band spectrum for mobile services. In particular, industry and technical groups are beginning to examine the use of higher frequencies sometimes known as millimeter wave (mmW) bands for mobile use. This examination of the possible uses of the mmW bands for mobile use takes place within the context of broader efforts to develop technical standards for so-called Fifth Generation (5G) mobile services. In view of the technological and marketplace developments outlined in this item, we seek to discern what frequency bands above 24 GHz would be most suitable for mobile services, and to begin developing a record on mobile service rules and a licensing framework for mobile services in those bands.

Frequencies/Bands

24.25 - 24.45 GHz

25.05 - 25.25 GHz

27.5 - 28.35 GHz

29.1 - 29.25 GHz

31 - 31.3 GHz

37 - 38.6 GHz

38.6 - 40 GHz

42 - 42.5 GHz

57 - 71 GHz

71 - 76 GHz

81 - 86 GHz

Document type and status: FCC proceeding (Current)
Document date or date of hyperlink query: June 23, 2015

FCC Above 24 GHz Mobile Radio Services Notice of Inquiry

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FCC Above 24 GHz Report and Order and Further Notice of Proposed Rulemaking

According to the FCC:

Today, we take a significant step towards securing the Nation’s future in the next generational evolution of wireless technology to so-called 5G. We build upon years of successful spectrum policy – including flexible use, unlicensed, and sharing policies – to create service rules for using four spectrum bands above 24 GHz. These high frequencies previously have been best suited for satellite or fixed microwave applications; however, recent technological breakthroughs have newly enabled advanced mobile services in these bands, notably including very high speed and low latency services. To promote the deployment of these highly beneficial technologies, we are acting quickly –- more quickly than most of our counterparts around the world – to establish a coherent framework built on a robust public record. In addition to this significant step forward, we will also continue to explore new opportunities to make additional bands available and to explore other issues, including robust Federal sharing, raised in the accompanying Further Notice of Proposed Rulemaking.

Frequencies/Bands

24.25 - 24.45 GHz

24.75 - 25.25 GHz

27.5 - 28.35 GHz

31.8 - 33 GHz

37 - 40 GHz

42 - 42.5 GHz

47.2 - 50.2 GHz

50.4 - 52.6 GHz

64 - 71 GHz

71 - 76 GHz

81 - 86 GHz

95 - 300 GHz

Document type and status: FCC proceeding (Current)
Document date or date of hyperlink query: September 21, 2016
Fcc Docket(s): GN 14-177, IB 15-256, RM-1164, WT 10-112, IB 97-95

FCC Above 24 GHz Report and Order and Further Notice of Proposed Rulemaking

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Engineering Data

	Lower Frequency	Center Frequency	Upper Frequency
Frequency	24.05 GHz	24.15 GHz	24.25 GHz
Wavelength	1.2 cm	1.2 cm	1.2 cm
Band designator(s)	SHF; K-band (IEEE)	SHF; K-band (IEEE)	SHF; K-band (IEEE)
Isotropic collecting area	0.1 cm²	0.1 cm²	0.1 cm²
Free space loss (1 m)	60.1 dB	60.1 dB	60.1 dB
Free space loss (1 km)	120.1 dB	120.1 dB	120.1 dB
Free space loss (10 km)	140.1 dB	140.1 dB	140.1 dB
Free space loss (100 km)	160.1 dB	160.1 dB	160.1 dB
Free space loss (1000 km)	180.1 dB	180.1 dB	180.1 dB
Free space loss (35,786 km = GEO orbit)	211.1 dB	211.2 dB	211.2 dB
Free space loss (378,370 km = Moon)	231.6 dB	231.7 dB	231.7 dB