U.S. Non-Federal-Government Allocations
FIXED
FIXED-SATELLITE (Earth-to-space) US297
MOBILE
MOBILE-SATELLITE (Earth-to-space)
RADIO ASTRONOMY
Space research (space-to-Earth)
FCC rule parts
SpectrumWiki
Radio spectrum allocations
Look up a frequency or a range.
Examples: 88.5 MHz, 1350–1430 MHz, 2.4 GHz
81 GHz (81,000,000,000 Hz)
U.S. Federal Government Allocations
FIXED
FIXED-SATELLITE (Earth-to-space) US297
MOBILE
MOBILE-SATELLITE (Earth-to-space)
RADIO ASTRONOMY
Space research (space-to-Earth)
ITU Region 1 Allocations
FIXED 5.338A
FIXED-SATELLITE (Earth-to-space)
MOBILE
MOBILE-SATELLITE (Earth-to-space)
RADIO ASTRONOMY
Space research (space-to-Earth)
ITU Region 2 Allocations
FIXED 5.338A
FIXED-SATELLITE (Earth-to-space)
MOBILE
MOBILE-SATELLITE (Earth-to-space)
RADIO ASTRONOMY
Space research (space-to-Earth)
ITU Region 3 Allocations
FIXED 5.338A
FIXED-SATELLITE (Earth-to-space)
MOBILE
MOBILE-SATELLITE (Earth-to-space)
RADIO ASTRONOMY
Space research (space-to-Earth)
Footnotes
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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) -
5.338A In the frequency bands 1 350-1 400 MHz, 1 427-1 452 MHz, 22.55-23.55 GHz, 24.25-27.5 GHz, 30-31.3 GHz, 49.7 50.2 GHz, 50.4-50.9 GHz, 51.4-52.4 GHz, 52.4-52.6 GHz, 81-86 GHz and 92-94 GHz, Resolution 750 (Rev.WRC 19) applies. (WRC 19)
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5.561A The 81-81.5 GHz band is also allocated to the amateur and amateur-satellite services on a secondary basis. (WRC 2000)
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US161 In the bands 81-86 GHz, 92-94 GHz, and 94.1-95 GHz and within the coordination distances indicated below, assignments to allocated services shall be coordinated with the following radio astronomy observatories. New observatories shall not receive protection from fixed stations that are licensed to operate in the one hundred most populous urbanized areas as defined by the U.S. Census Bureau for the year 2000.
(a) Within 25 km of the National Radio Astronomy Observatory’s (NRAO’s) Very Long Baseline Array (VLBA) Stations:
State VLBA Station Lat. (N) Long. (W) AZ Kitt Peak 31° 57` 23" 111° 36` 45" CA Owens Valley 37° 13` 54" 118° 16` 37" HI Mauna Kea 19° 48` 05" 155° 27` 20" IA North Liberty 41° 46` 17" 091° 34` 27" NH Hancock 42° 56` 01" 071° 59` 12" NM Los Alamos 35° 46` 30" 106° 14` 44" NM Pie Town 34° 18` 04" 108° 07` 09" TX Fort Davis 30° 38` 06" 103° 56` 41" VI Saint Croix 17° 45` 24" 064° 35` 01" WA Brewster 48° 07` 52" 119° 41` 00" (b) Within 150 km of the following observatories:
State Telescope and site Lat. (N) Long. (W) AZ Heinrich Hertz Submillimeter Observatory, Mt. Graham 32° 42` 06" 109° 53` 28" AZ University of Arizona 12-m Telescope, Kitt Peak 31° 57` 12" 111° 36` 53" CA Caltech Telescope, Owens Valley 37° 13` 54" 118° 17` 36" CA Combined Array for Research in Millimeter-wave Astronomy (CARMA) 37° 16` 43" 118° 08` 32" HI James Clerk Maxwell Telescope, Mauna Kea 19° 49` 33" 155° 28` 47" MA Haystack Observatory, Westford 42° 37` 24" 071° 29` 18" NM NRAO’s Very Large Array, Socorro 34° 04` 44" 107° 37` 06" WV NRAO’s Robert C. Byrd Telescope, Green Bank 38° 25` 59" 079° 50` 23" Note: Satisfactory completion of the coordination procedure utilizing the automated mechanism, see 47 CFR 101.1523, will be deemed to establish sufficient separation from radio astronomy observatories, regardless of whether the distances set forth above are met.
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US297 The bands 47.2-49.2 GHz and 81-82.5 GHz are also available for feeder links for the broadcasting-satellite service.
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US342 In making assignments to stations of other services to which the bands:
13 360-13 410 kHz 42.77-42.87 GHz* 25 550-25 670 kHz 43.07-43.17 GHz* 37.5-38.25 MHz 43.37-43.47 GHz* 322-328.6 MHz* 48.94-49.04 GHz* 1330-1400 MHz* 76-86 GHz 1610.6-1613.8 MHz* 92-94 GHz 1660-1660.5 MHz* 94.1-100 GHz 1668.4-1670 MHz* 102-109.5 GHz 3260-3267 MHz* 111.8-114.25 GHz 3332-3339 MHz* 128.33-128.59 GHz* 3345.8-3352.5 MHz* 129.23-129.49 GHz* 4825-4835 MHz* 130-134 GHz 4950-4990 MHz 136-148.5 GHz 6650-6675.2 MHz* 151.5-158.5 GHz 14.47-14.5 GHz* 168.59-168.93 GHz* 22.01-22.21 GHz* 171.11-171.45 GHz* 22.21-22.5 GHz 172.31-172.65 GHz* 22.81-22.86 GHz* 173.52-173.85 GHz* 23.07-23.12 GHz* 195.75-196.15 GHz* 31.2-31.3 GHz 209-226 GHz 36.43-36.5 GHz* 241-250 GHz 42.5-43.5 GHz 252-275 GHz are allocated (*indicates radio astronomy use for spectral line observations), all practicable steps shall be taken 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 ITU Radio Regulations at Nos. 4.5 and 4.6 and Article 29).
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US389 In the bands 71-76 GHz and 81-86 GHz, stations in the fixed, mobile, and broadcasting services shall not cause harmful interference to, nor claim protection from, Federal stations in the fixed-satellite service at any of the following 28 military installations:
Military Installation State Nearby city Redstone Arsenal AL Huntsville Fort Huachuca AZ Sierra Vista Yuma Proving Ground AZ Yuma Beale AFB CA Marysville Camp Parks Reserve Forces Training Area CA Dublin China Lake Naval Air Weapons Station CA Ridgecrest Edwards AFB CA Rosamond Fort Irwin CA Barstow Marine Corps Air Ground Combat Center CA Twentynine Palms Buckley AFB CO Aurora (Denver) Schriever AFB CO Colorado Springs Fort Gordon GA Augusta Naval Satellite Operations Center GU Finegayan (Guam) Naval Computer and Telecommunications Area Master Station, Pacific HI Wahiawa (Oahu Is.) Fort Detrick MD Frederick Nellis AFB NV Las Vegas Nevada Test Site NV Amargosa Valley Tonapah Test Range Airfield NV Tonapah Cannon AFB NM Clovis White Sands Missile Range NM White Sands Dyess AFB TX Abilene Fort Bliss TX El Paso Fort Sam Houston TX San Antonio Goodfellow AFB TX San Angelo Kelly AFB TX San Antonio Utah Test and Training Range UT … Fort Belvoir VA Alexandria Naval Satellite Operations Center VA Chesapeake
Wiki entries
Unlicensed Level Probing Radars
Proposed Use
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
70/80/90 GHz Bands
Current Use
81–86 GHz 70/80/90 GHz Band
In 2003 the Commission adopted a Report and Order establishing service rules to promote non-Federal development and use of the “millimeter wave” spectrum in the 71-76 GHz, 81-86 GHz and 92-95 GHz bands on a shared basis with Federal Government operations. It modified those rules on reconsideration in 2005. The Commission adopted a flexible and innovative regulatory framework for the 70/80/90 GHz bands that allows for the issuance of an unlimited number of nonexclusive, nationwide licenses to non-Federal Government entities for a total of 12.9 gigahertz of spectrum allocated for commercial use. These licenses serve as a prerequisite for registering individual point-to-point links in a link registration system developed and managed by one or more third-party database managers. A licensee is not authorized to operate a link under its nationwide license until the link is both (1) coordinated with the National Telecommunications and Information Administration (NTIA) with respect to Federal Government operations and (2) registered as an approved link. The Report and Order noted that, in the past, the Commission had introduced market forces into the frequency coordination process wherever possible and appropriate because competition among coordinators promotes cost-based pricing and provides incentives for enhancing customer link management. Accordingly, the Commission directed the Bureau to select one or more database managers pursuant to its existing delegated authority and to consider the benefits of competition during the selection process. On that basis, the Commission determined that there was no reason to set limits on the fees charged by a
database manager.
In March 2004 the Bureau issued a public notice seeking proposals from parties interested in developing and managing the link registration system, and four parties initially submitted proposals. One party decided to remove its proposal from consideration, and the remaining three ultimately submitted an amended joint proposal on September 9, 2004 (Joint Proposal). Later in September 2004, the Bureau designated three companies to be Database Managers for the 70/80/90 GHz bands: Frequency Finder, Inc. (FFI), Micronet Communications, Inc. (Micronet), and Comsearch. In doing so, the Bureau rejected Comsearch’s original proposal to restrict frequency management in the 70/80/90 GHz bands to a single manager. The Bureau also reserved the discretion to designate additional managers or change the current designations at a later date if circumstances indicated that such action was warranted.
The Designation Order acknowledged that the Commission had envisioned a single, shared database if more than one database manager were selected, but the Bureau decided that it could accomplish the same purpose by accepting a joint proposal by the Database Managers to link their separate databases through coordinated communications to form a unified link registration system.
Accordingly, the Bureau required the Database Managers to build a cooperative environment to expedite link registrations through their combined efforts, sharing link information on a continuous basis to provide users, the public and the Commission with access to the most up to-date link information.
Database Managers register links and maintain a record of the requested and approved links for each licensee. In the event of an interference dispute, interference protection rights with regard to affected links are established based on the date and time of link registration, i.e., as between two or more links experiencing or causing interference, the link with the earliest registration date would acquire the right to protection from the later registered link or links, and so on in order of priority based upon the earliest date registered. The Designation Order noted that the Commission had expressly stated that Database Managers would not have authority to recommend specific frequencies to users, but would be responsible for keeping current link registration information to aid in resolution of interference disputes.
In 2005 the Commission revised its rules to (i) require licensees, for each link as part of the registration process, to submit a frequency interference analysis to a Database Manager, and (ii) direct the Database Managers to retain such analyses electronically for subsequent review by the public to aid in the resolution of any interference disputes that might subsequently arise. The Commission foresaw little likelihood that any such disputes would develop after operations commenced in the 70/80/90 GHz bands, but it provided an avenue for interference complaints to be submitted to, and resolved by, the Commission. The Reconsideration Order clarified that the Commission was neither requiring nor precluding Database Managers from providing additional services such as frequency coordination, link design or interference analyses.
E-band
Current Use
81–86 GHz E-band
"E-Band: since 2000, regulators have made available high frequency bands at 71-76 GHz and 81-86 GHz. E-Band enables gigabit-per-second data rates given the huge amount of available spectrum (10 GHz) without any oxygen absorption, thus allowing longer distances compared to V-Band."
The E-band is frequently considered to also include the 92-95 GHz band.
Please see the document section for a link to an ETSI report on worldwide regulation of V-band and E-band.
WRC-27 consideration of satellite power limits to protect fixed and mobile services
Proposed Use
81–86 GHz Consideration of satellite power limits to protect fixed and mobile services
to consider developing power flux-density and equivalent isotropically radiated power limits for inclusion in Article 21 of the Radio Regulations for the fixed-satellite, mobile-satellite and broadcasting-satellite services to protect the fixed and mobile services in the frequency bands 71-76 GHz and 81-86 GHz, in accordance with Resolution 775 (Rev.WRC-23)