Federal Spectrum Use Summary (Sept. 2000)

Federal Use of the Radio Frequency Spectrum
1300 to 10,000 MHz

UNITED STATES
Band

MHz

Government

Allocation(s)

Government Allocation(s) by Footnote Government Usage Planned Usage
1300- 1350 AERONAUTICAL

RADIONAVIGATION Radiolocation

S5.149 S5.337 G2

None Aero-Radionav. This band is used heavily for radiolocation and radionavigation performing long-range air surveillance and enroute air-traffic control functions. The DOD and FAA recently deployed a modernized Air-Route Surveillance Radar Model 4 (ARSR-4) in this band for air-defense, drug interdiction and air-traffic control.

FAA Aero-Radionav. The FAA and aviation users depend upon air-route surveillance radars (ARSRs) to obtain aircraft position information in support of enroute air-traffic control.

Military Aero-Radionav. The Air Force and Navy make use of it for high-power long-range surveillance radars and air-traffic control radars, in support of national defense missions.

Drug Interdiction. In this application, radar equipment is mounted on tethered balloons along the southern border of the U.S. to detect low-flying aircraft entering U.S. airspace.

Radio Astronomy. Observations are made of highly redshifted hydrogen spectral lines that occur in the 1330- 1350 MHz band.

Use expected to increase.

Awaiting IRAC approval of AH 206 recommended implementation of WRC-2000 allocation changes to: 1) add footnote S5.337A; and 2) add RADIONAVIGATION- SATELLITE (Earth-to-space).

1350- 1369.05 FIXED

MOBILE

RADIOLOCATION

S5.149 S5.334 G2 US311 G27 G114

AERONAUTICAL RADIONAVIGATION S5.334 Military Radars. This band is heavily used for various military radiolocation applications for high-power long-range surveillance radars. The DOD and FAA recently deployed a modernized Air-Route Surveillance Radar Model 4 (ARSR-4) in this band for air-defense, drug interdiction and air-traffic control.

Radio Astronomy. Radio astronomy observations are made in this band of highly redshifted hydrogen spectral lines that occur in this band. Knowledge of other galaxies and the early universe comes from these observations.

Passive Research. NASA performs passive space research and Earth exploration-satellite observations.

Fixed & Mobile. This band is seeing increased use for fixed links and mobile links since the Federal fixed and mobile service allocations were upgraded to primary in 1989.

No changes are planned. Use expected to increase.
1369.05- 1370 FIXED

MOBILE

RADIOLOCATION

S5.149 US311 S5.334 G2 G27 G114

FIXED SATELLITE G114

MOBILE SATELLITE G114

AERONAUTICAL RADIONAVIGATION S5.334

Military Radars. This band is heavily used for various military radiolocation applications for high-power long-range surveillance radars. The DOD and FAA recently deployed a modernized Air-Route Surveillance Radar Model 4 (ARSR-4) in this band for air-defense, drug interdiction and air-traffic control.

Radio Astronomy. Radio astronomy observations are made in this band of highly redshifted hydrogen spectral lines that occur in this band. Knowledge of other galaxies and the early universe comes from these observations.

Passive Research. NASA performs passive space research and Earth exploration-satellite observations.

Fixed & Mobile. This band is seeing increased use for fixed links and mobile links since the Federal fixed and mobile service allocations were upgraded to primary in 1989.

Telecommand Ops. DOD uses this band for drone telecommand at military test ranges.

No changes are planned. Use expected to increase.
1370- 1393.05 FIXED

MOBILE

RADIOLOCATION

S5.149 US311 S5.334 S5.339 G2 G27 G114

FIXED SATELLITE G114

MOBILE SATELLITE G114

Space Research (passive) S5.339

Earth Exploration-Satellite (passive) S5.339

Military Radars. This band is heavily used for various military radiolocation applications for high-power long-range surveillance radars. The DOD and FAA recently deployed a modernized Air-Route Surveillance Radar Model 4 (ARSR-4) in this band for air-defense, drug interdiction and air-traffic control.

GPS. GPS operates on 1381.05 to relay data on nuclear bursts detected by orbiting satellites. This specific requirement is limited to U.S. satellites.

Radio Astronomy. Observations are made of highly redshifted hydrogen spectral lines that occur in this band. Knowledge of other galaxies and the early universe comes from these observations.

Passive Research. NASA performs passive space research and Earth exploration-satellite observations. The band 1370-1400 MHz is used for remote sensing of salinity and soil moisture.

Fixed & Mobile. This band is seeing increased use for fixed links and mobile links, since the Federal fixed and mobile service allocations were upgraded to primary in 1989.

NTIA identified 1390- 1400 MHz for reallocation under OBRA-93, and reallocated to the private sector on Jan 1, 1999.
1393.05- 1400 FIXED

MOBILE

RADIOLOCATION

S5.149 US311 S5.334 S5.339 G2 G27

Space Research (passive) S5.339

Earth Exploration-Satellite (passive) S5.339

Military Radars. This band is used for various military radiolocation applications for high-power long-range surveillance radars. The DOD and FAA recently deployed a modernized Air-Route Surveillance Radar Model 4 (ARSR-4) in this band for air-defense, drug interdiction and air-traffic control.

Fixed & Mobile. This band is seeing increased use for fixed links and mobile links, since the Federal fixed and mobile service allocations were upgraded to primary in 1989.

Passive Research. NASA performs passive space research and Earth exploration-satellite observations. The band 1370-1400 MHz is used for remote sensing of salinity and soil moisture.

Radio Astronomy. Radio astronomy observations are made in this band of highly redshifted hydrogen spectral lines that occur in this band. Knowledge of other galaxies and the early universe comes from these observations.

Medical Telemetry. Various Federal agencies operate medical telemetry devices in the 1395-1400 MHz band throughout the United States.

NTIA identified 1390- 1400 MHz for reallocation under OBRA-93, and reallocated to the private sector on Jan 1, 1999; however, 17 Federal sites will continue to operate for 14 years (see NTIA Report SP 95-32). The band 1385-1390 MHz was returned per the Defense Authorization Act of 2000.
1400- 1427 EARTH EXPLORATION-SATELLITE (passive)

RADIO ASTRONOMY

SPACE RESEARCH (passive)

US74 US246 S5.341

None Passive Research. Space-based observations and measurements to advance many areas of global change research such as sea salinity and temperature measurements, soil moisture, etc. are made in this band.

Radio Astronomy. Hydrogen line observations are made in this band.

Scientific research is expected to continue and increase in this band.
1427- 1429 FIXED

MOBILE except aeronautical mobile

SPACE OPERATION

(Earth-to-space)

S5.341 G30

None None Under the OBRA-93 and BBA-97, the band 1427- 1435 MHz was identified for reallocation for exclusive non-Federal government use on January 1999; however, 14 sites were identified to allow essential Federal operations to continue until January 2004.
1429- 1435 FIXED

MOBILE

S5.341 G30

None Fixed & Mobile. Though this band was reallocated for exclusive non-Federal use, essential Federal operations will continue at 14 sites until January 2004.

Medical Telemetry. Various Federal agencies operate medical telemetry devices in the 1429-1435 MHz band throughout the United States.

Under the OBRA-93 and BBA-97, the band 1427- 1435 MHz was identified for reallocation for exclusive non-Federal government use on January 1999; however, 14 sites were identified to allow essential Federal operations to continue until January 2004.
1435- 1525 MOBILE

(Aeronautical telemetering) S5.343

S5.341 US78

None Aeronautical Telemetry. Vital and extensive use of the band 1435- 1535 MHz is for aeronautical telemetry and associated telecommand operations for flight testing of manned or unmanned aircraft and missiles, or their major components as well as for equipment development functions. No changes are planned. Use expected to continue.
1525- 1530 MOBILE-SATELLITE (space-to-Earth)

Earth Exploration-Satellite

Fixed

Mobile S5.343

S5.341 S5.351 S5.354 US78

None INMARSAT. Naval and USCG ships and vessels use INMARSAT for distress and safety communications as well as for general communications services.

Aeronautical Telemetry. Vital and extensive use of the band 1435- 1535 MHz is for aeronautical telemetry and associated telecommand operations for flight testing of manned or unmanned aircraft and missiles, or their major components as well as for equipment development functions.

No changes are planned. Use expected to continue.
1530- 1533 MOBILE-SATELLITE

(space-to-Earth)

Mobile (Aeronautical

Telemetry)

S5.341 S5.351 S5.354 US78 US315

None INMARSAT. Naval and Coast Guard ships and vessels use INMARSAT for distress and safety communications (1530- 1545 MHz, space-to-Earth) as well as for general communications services.

Aeronautical Telemetry. Vital and extensive use of the band 1435- 1535 MHz is for aeronautical telemetry and associated telecommand operations for flight testing of manned or unmanned aircraft and missiles, or their major components as well as for equipment development functions.

No changes are planned. Use expected to continue.
1533- 1535 MOBILE-SATELLITE

(space-to-Earth)

Mobile (Aeronautical

Telemetry)

S5.341 S5.351 S5.352 S5.354 US78 US315

None INMARSAT. Naval and Coast Guard ships and vessels use INMARSAT for distress and safety communications (1530- 1545 MHz, space-to-Earth) as well as for general communications services.

Aeronautical Telemetry. Vital and extensive use of the band 1435- 1535 MHz is for aeronautical telemetry and associated telecommand operations for flight testing of manned or unmanned aircraft and missiles, or their major components as well as for equipment development functions.

No changes are planned. Use expected to continue.
1535- 1544 MOBILE-SATELLITE (space-to-Earth)

S5.341 S5.351 S5.353A S5.354 S5.356 S5.357A US308 US309 US315

None INMARSAT. INMARSAT downlinks to various Federal agencies' for operational use. No changes are planned. Use expected to continue.
1544- 1545 MOBILE-SATELLITE (space-to-Earth)

S5.341 S5.351 S5.353A S5.354 S5.356 S5.357A US308 US309 US315

None SARSAT. NOAA search and rescue satellites (SARSAT) retransmit emergency transmitter signal on 1544.5 MHz to surface stations. No changes are planned. Use expected to continue.
1545- 1549.5 MOBILE-SATELLITE (space-to-Earth)

S5.341 S5.351 S5.353A S5.354 S5.356 S5.357A US308 US309 US315

None Mobile Satellite. Federal government agencies are users of commercial mobile satellite services offered in this band.

FAA: Uses INMARSAT for safety-related communications during enroute oceanic flights.

No changes are planned.

Satellite communications will continue for the foreseeable future.

1549.5- 1555 MOBILE-SATELLITE (space-to-Earth)

S5.341 S5.351 S5.353A S5.354 S5.356 S5.357A US308 US309 US315

None Mobile Satellite. Federal government agencies are users of commercial mobile satellite services offered in this band.

FAA: Uses INMARSAT for safety-related communications during enroute oceanic flights.

No changes are planned.

Satellite communications will continue for the foreseeable future.

1555- 1559 AERONAUTICAL

MOBILE-SATELLITE (R) (space-to-Earth)

MOBILE-SATELLITE (space-to-Earth)

S5.341 S5.351 S5.353A S5.354 S5.356 S5.362A

US308 US309 US315

None Mobile Satellite. Federal government agencies are users of commercial mobile satellite services offered in this band.

FAA: Uses INMARSAT for safety-related communications during enroute oceanic flights.

No changes are planned.

Satellite communications will continue for the foreseeable future.

1559- 1610 AERONAUTICAL

RADIONAVIGATION

RADIONAVIGATION-

SATELLITE (space-to-Earth)

G126 US208 US260 S5.341

Aeronautical Mobile US260 GPS. The Global Positioning System operates on 1575.42 MHz 12 MHz (L1 link) as part of the radionavigation-satellite service. The GPS is a multisatellite system with large numbers of U.S. and international users. ICAO has recognized the GPS and GLONASS as the two principal candidates for the Global Navigation Satellite System.

NASA Research. Operates active sensor flight instruments such as SAR (JERS-1 & SICH), SIR-C, TRAV.SAR, VSAR.

Use expected to continue.

As the U.S. transitions to satellite-base navigation, the FAA is developing a GPS wide area augmentation sys (WAAS) as a safety-critical sys for aviation users to support en route through precision approach navigation. The WAAS will operate as an overlay on the GPS L1 link in the 1559-1610 MHz band.

Awaiting IRAC approval of AH 206 recommended implementation of WRC-2000 allocation changes to: 1) add RADIONAVIGATION- SATELLITE (space-to-space); and 2) add ITU footnotes (S5.330 and S5.331).

1610- 1610.6 AERONAUTICAL

RADIONAVIGATION US260

RADIODETERMINATION- SATELLITE (Earth-to-space)

MOBILE-SATELLITE (Earth-to-space) US319

US208 US319 S5.341 S5.364 S5.366 S5.367 S5.368 S5.372 S5.385

AERONAUTICAL MOBILE-SATELLITE (R) S5.367

Aeronautical Mobile US260

Radio Astronomy S5.385

Radio Astronomy. NASA operates a deep space system 70-meter antenna in support of radio astronomy observations. Radio Astronomy observations are performed in this band to study the hydroxyl radical spectral lines allowing study of stellar and expansion velocities, validate theories of the origins, and evolution of the Universe. Use expected to continue.
1610.6- 1613.8 AERONAUTICAL

RADIONAVIGATION

US260

RADIODETERMINATION- SATELLITE (Earth-to-space)

MOBILE-SATELLITE (Earth-to-space) US319

RADIO ASTRONOMY

US208 S5.149 S5.341 S5.364 S5.366 S5.367 S5.368 S5.372

AERONAUTICAL RADIONAVIGATION SATELLITE S5.366

Aeronautical Mobile US260

AERONAUTICAL MOBILE-SATELLITE (R) S5.367

Radio Astronomy. NASA operates a deep space system 70-meter antenna in support of radio astronomy observations. Radio Astronomy observations are performed in this band to study the hydroxyl radical spectral lines allowing study of stellar and expansion velocities, validate theories of the origins, and evolution of the Universe. Scientific research is expected to continue and increase in this band.
1613.8- 1626.5 AERONAUTICAL RADIONAVIGATION

US260

RADIODETERMINATION- SATELLITE (Earth-to-space)

MOBILE-SATELLITE (Earth-to-space) US319

Mobile-Satellite

(space-to-Earth)

US208 S5.341 S5.364 S5.365 S5.366 S5.367 S5.372 S5.368

AERONAUTICAL RADIONAVIGATION-SATELLITE S5.366

Aeronautical Mobile . US260

AERONAUTICAL MOBILE- SATELLITE (R) S5.367

Mobile Satellite. Federal government agencies are users of commercial mobile satellite services offered in this band supporting terrestrial, ship, and airborne scientific research experiments and missions. No changes are planned. Use expected to continue.
1626.5- 1645.5 MOBILE-SATELLITE (Earth-to-space)

S5.341 S5.351 S5.353 S5.354 S5.357A MOD S5.374 S5.375 S5.376 US308 US309 US315

None INMARSAT. Federal government agencies are users of commercial INMARSAT mobile satellite services offered in this band in support of natural disasters and various contingencies. No changes are planned. Use expected to continue.
1645.5-

1646.5

MOBILE-SATELLITE (Earth-to-space)

S5.341 S5.351 S5.353 S5.354 S5.357A MOD S5.374 S5.375 S5.376 US308 US309 US315

None Distress & Safety. Transmission in this band by the MSS and ISS links is limited to distress and safety communications (S5.375). No changes are planned. Use expected to continue.
1646.5- 1656.5 MOBILE-SATELLITE (Earth-to-space)

S5.341 S5.351 S5.353 S5.354 S5.357A MOD S5.374 S5.375 S5.376 US308 US309 US315

None Radiosonde. Federal agencies conduct radiosonde operations in this band.

FAA: Uses INMARSAT for safety-related communications during enroute oceanic flights.

No changes are planned.

Satellite communications will continue for the foreseeable future.

1656.5- 1660 MOBILE-SATELLITE (Earth-to-space)

AERONAUTICAL MOBILE-SATELLITE (R) (Earth-to-space)

RADIO ASTRONOMY

S5.149 S5.341 S5.351 S5.354 S5.362A S5.375 MOD S5.374 S5.376 US308 US309 US315

None FAA: Uses INMARSAT for safety-related communications during enroute oceanic flights.

NASA DSN Radio Astronomy. NASA operates a deep space system 70-meter antenna in support of radio astronomy observations. Radio Astronomy observations are performed in this band to study the hydroxyl radical spectral lines allowing study of stellar and expansion velocities, validate theories of the origins, and evolution of the Universe.

Scientific research is expected to continue and increase in this band.

Satellite communications will continue for the foreseeable future.

1660- 1660.5 MOBILE-SATELLITE (Earth-to-space)

AERONAUTICAL MOBILE-SATELLITE (R) (Earth-to-space)

RADIO ASTRONOMY

S5.149 S5.341 S5.351 S5.354 S5.362A S5.375 MOD S5.374 S5.376 US308 US309 US315

None FAA: Uses INMARSAT for safety-related communications during enroute oceanic flights.

NASA DSN Radio Astronomy. NASA operates a deep space system 70-meter antenna in support of radio astronomy observations. Radio Astronomy observations are performed in this band to study the hydroxyl radical spectral lines allowing study of stellar and expansion velocities, validate theories of the origins, and evolution of the Universe.

Scientific research is expected to continue and increase in this band.

Satellite communications will continue for the foreseeable future.

1660.5- 1668.4 RADIO ASTRONOMY

SPACE RESEARCH

(passive)

US74 US246 S5.341

None NASA DSN Radio Astronomy. NASA operates a deep space system 70-meter antenna in support of radio astronomy observations. Radio Astronomy observations are performed in this band to study the hydroxyl radical spectral lines allowing study of stellar and expansion velocities, validate theories of the origins, and evolution of the Universe. Scientific research is expected to continue and increase in this band.
1668.4- 1670 METEOROLOGICAL AIDS (Radiosonde)

RADIO ASTRONOMY

S5.149 US74 US99 S5.341

None NASA DSN Radio Astronomy. NASA operates a deep space system 70-meter antenna in support of radio astronomy observations. Radio Astronomy observations are performed in this band to study the hydroxyl radical spectral lines allowing study of stellar and expansion velocities, validate theories of the origins, and evolution of the Universe. Scientific research is expected to continue and increase in this band.
1670- 1675 METEOROLOGICAL AIDS (Radiosonde)

METEOROLOGICAL-

SATELLITE (space-to-Earth)

US211 S5.341

None Radiosondes. Numerous Federal agencies conduct radiosonde operations in the collection of meteorological data. The 1670- 1675 MHz band was identified for reallocation to the private sector on Jan 1, 1999 under OBRA-93. Use is TBD.
1675- 1690 METEOROLOGICAL AIDS (Radiosonde)

METEOROLOGICAL-

SATELLITE (space-to-Earth)

US211 S5.341

None WXD Satellite. NOAA operates the GOES I through M meteorological satellites in this band. NASA supports NOAA operations at the GSFC.

Radiosondes. Numerous Federal agencies conduct radiosonde operations in the collection of meteorological data.

No changes are planned. Use expected to continue.
1690- 1700 METEOROLOGICAL AIDS (Radiosonde)

METEOROLOGICAL-

SATELLITE (space-to-Earth)

S5.289 S5.341

Earth Exploration Satellite S5.289 WXD Satellite. NOAA operates the GOES I through M as well as the TIROS-N meteorological satellites in this band. NASA supports NOAA operations at the GSFC.

Radiosondes. Numerous Federal agencies conduct radiosonde operations in the collection of meteorological data.

No changes are planned. Use expected to continue.
1700- 1710 FIXED

METEOROLOGICAL-SATELLITE (space-to-Earth)

S5.289 S5.341 G118

Earth Exploration Satellite S5.289 WXD Satellite. NOAA operates the TIROS-N meteorological satellite in this band. NASA supports NOAA operations at the GSFC.

Point-to-Point. Numerous Federal agencies operate fixed point-to-point microwave systems in this band.

No changes are planned. Use expected to continue.
1710- 1718.8 FIXED

MOBILE

S5.341

None Point-to-Point. Numerous Federal agencies operate fixed point-to-point medium capacity microwave systems in this band for such purposes as hydropower and dam control, air traffic control communications, Federal law enforcement, natural resource management, tactical radio relay.

Fixed & Mobile. Mobile use both on ground and airborne are for air-to-ground video telemetry, air combat training systems, guided weapons systems and robotics control.

Under the OBRA-93, the band 1710- 1755 MHz was identified for reallocation to the private sector for mixed use on January 1999. Use is TBD. Also under OBRA-93, 16 Federal sites providing essential operations will be retained indefinitely in the band 1710- 1755 MHz.
1718.8- 1722.2 FIXED

MOBILE

US256 S5.341

Radio Astronomy US256 Point-to-Point. Numerous Federal agencies operate fixed point-to-point medium capacity microwave systems in this band for such purposes as hydropower and dam control, air traffic control communications, Federal law enforcement, natural resource management, tactical radio relay.

Fixed & Mobile. Mobile use both on ground and airborne are for air-to-ground video telemetry, air combat training systems, guided weapons systems and robotics control.

Radio Astronomy. Observations are performed in this band to study the hydroxyl radical spectral lines allowing study of stellar and expansion velocities, validate theories of the origins, and evolution of the Universe.

Under the OBRA-93, the band 1710- 1755 MHz was identified for reallocation to the private sector for mixed use on January 1999. Use is TBD. Approximately 16 Federal sites providing essential operations will be retained indefinitely in the band 1710- 1755 MHz.
1722.2- 1761 FIXED

MOBILE

S5.341

None Point-to-Point. Numerous Federal agencies operate fixed point-to-point medium capacity microwave systems in this band for such purposes as hydropower and dam control, air traffic control communications, Federal law enforcement, natural resource management, tactical radio relay.

Fixed & Mobile. Mobile use both on ground and airborne are for air-to-ground video telemetry, air combat training systems, guided weapons systems and robotics control. Additionally, some agencies are using WLANs and tactical point-to-point communications systems in the 1755-1850 MHz band.

Under the OBRA-93, the band 1710- 1755 MHz was identified for reallocation to the private sector for mixed use on January 1999. Use is TBD. Approximately 16 Federal sites providing essential operations will be retained indefinitely in the band 1710- 1755 MHz.
1761- 1842 FIXED

MOBILE

S5.341 G42

SPACE OPERATIONS G42 Space Ops. The Air Force Satellite Control Network and Satellite Ground Link Subsystem users have uplink channels for the tracking and telecommand of various NGSO satellites.

NASA. This band is used for Shuttle payload interrogation and for data air telemetry links.

Point-to-Point. Numerous Federal agencies operate fixed point-to-point medium capacity microwave systems in this band for such purposes as hydropower and dam control, air traffic control communications, Federal law enforcement, natural resource management, tactical radio relay.

Fixed & Mobile. Mobile use both on ground and airborne are for air-to-ground video telemetry, air combat training systems, guided weapons systems and robotics control. Additionally, some agencies are using WLANs and tactical point-to-point communications systems in the 1755-1850 MHz band.

Use expected to increase.
1842- 1850 FIXED

MOBILE

S5.341

None Point-to-Point. Numerous Federal agencies operate fixed point-to-point medium capacity microwave systems in this band for such purposes as hydropower and dam control, air traffic control communications, Federal law enforcement, natural resource management, tactical radio relay.

Fixed & Mobile. Mobile use both on ground and airborne are for air-to-ground video telemetry, air combat training systems, guided weapons systems and robotics control. Additionally, some agencies are using WLANs and tactical point-to-point communications systems in the 1755-1850 MHz band.

Use expected to increase.
1850- 1930 None None None No changes are planned.
1930- 1970 None None None No changes are planned.
1970- 1980 None None None No changes are planned.
1980- 1990 None None None No changes are planned.
1990- 2025 None None Experimental. Numerous experimental antenna test stations checkout frequency response of transmit and receive antennas. Use expected to continue.
2025- 2035 SPACE OPERATION

(Earth-to-space)

(space-to-space)EARTH EXPLORATION-

SATELLITE

(Earth-to-space)

(space-to-space)

SPACE RESEARCH

(Earth-to-space)

(Space-to-space)

S5.392 MOD US90

US346 US374

None NASA. The 2025-2110 MHz band is the primary telecommand band used for the control of Agency mission spacecraft. The band is used for uplinks direct from ground stations and for forward links via the TDRSS.

WXD Satellite. The NOAA GOES (I through M) meteorological satellites operate in this band.

No changes are planned. Use expected to continue.
2035- 2110 SPACE OPERATION

(Earth-to-space)

(space-to-space)EARTH EXPLORATION-

SATELLITE

(Earth-to-space)

(space-to-space)

SPACE RESEARCH

(Earth-to-space)

(Space-to-space)

S5.391 S5.392 MOD US90 US336 US347

None TDRSS. NASA GSO Tracking and Data Relay Satellite System (TDRSS) .

NASA Uplinks. NASA telecommand uplinks supporting Hubble Space Telescope, NASA atmospheric research satellite, cosmic background explorer satellite, ERBS, NIMB US-7, LANDSAT 4 & 5, the space shuttle missions, High Energy Transient Experiment (HETE),SeaStar Ocean Color Project, Microlab-1 mission, Fast Auroral Snapshot Explorer (FAST), Submillimeter Wave Astronomy Satellite, Earth Observing Sys AM (EOS-AM), advanced composition explorer (ACE), AMPTE, Advanced X-ray Astrophysics Facility-Imaging Satellite Sys, Polar Plasma Laboratory Satellite Sys, Student Nitric Oxide Explorer (SNOE) Satellite Sys, Tomographic Experiment using Radioactive Recombinative Ionospheric EUV and Radio Sources (TERRIERS), Transition Region and Coronal Explorer (TRACE), Wide-Field Infrared Explorer (WIRE) Satellite Sys, METEOSAT-3, a temporary gapfiller for the GOES meteorological satellite.

No changes are planned. Use expected to continue.
2110- 2120 SPACE RESEARCH (deep space) (Earth-to-space) US252

US111

None NASA Deep Space. NASA tracking and command of deep space probes Voyager 1 (Jupiter and beyond) ,Voyager 2 (Jupiter, Saturn, and beyond), Galileo (Jupiter), and the NASAESA cooperative Ulysses mission (formerly International Solar Polar Mission). No changes are planned. Use expected to continue.
2120- 2130 None None Experimental. Experimental antenna test station evaluating antenna patterns is done in this band. Use expected to continue.
2130- 2150 None None Experimental. Experimental antenna test station evaluating antenna patterns is done in this band. Use expected to continue.
2150- 2160 None None Experimental. Experimental ground testing of transmitters. Use expected to continue.
2160- 2165 None None None No changes are planned.
2165- 2170 None None None No changes are planned.
2170- 2200 None None Experimental. Various Federal experimental test stations operate in this band. Use expected to continue.
2200- 2285 FIXED (LOS* only)

MOBILE (LOS only including aeronautical telemetering, but excluding flight testing of manned aircraft)

SPACE RESEARCH

(space-to-Earth)

(space-to-space)

SPACE OPERATION

(space-to-Earth)

(space-to-space)

EARTH EXPLORATION-SATELLITE (space-to-Earth)

(space-to- space)

S5.392 MOD S5.391

US302

None TT&C. Primary tracking, telemetry, and control (TT&C) links for Federal Government and commercial expendable launch vehicles (ELV). Commercial launches are supported by DOD on a case-by-case basis.

Space Research. NASA space research station supporting NASA'S tethered satellite system (TSS), High Energy Transient Experiment (HETE), NIMB US-7, Fast Auroral Snapshot Explorer (FAST), Submillimeter Wave Astronomy Satellite, Advanced X-ray Astrophysics Facility-Imaging Satellite System, Polar Plasma Laboratory Satellite System, Student Nitric Oxide Explorer (SNOE) Satellite System, Tomographic Experiment using Radioactive Recombinative Ionospheric EUV and Radio Sources (TERRIERS), Transition Region and Coronal Explorer (TRACE), Wide-Field Infrared Explorer (WIRE) Satellite Systems, and the Technology Experiment Augmenting Spartan (TEXAS), and its space research space program DE-A in this band.

NASA Downlinks. The 2200-2290 MHz band is the primary telemetry band used by Agency mission spacecraft. The band is used for direct downlinks to Earth stations and for return links via the TDRSS.

No changes are planned. Use expected to continue.
2285- 2290 FIXED (LOS* only)

MOBILE (LOS only including aeronautical telemetering, but excluding flight testing of manned aircraft)

SPACE RESEARCH

(space-to-Earth)

(space-to-space)

SPACE OPERATION

(space-to-Earth)

(space-to-space)

EARTH EXPLORATION-SATELLITE (space-to-Earth)

(space-to- space)

MOD S5.391

US303 S5.392

None TT&C. TT&C downlinks via TDRSS.

NASA Telemetry. Telemetry data from Hubble Space Telescope

NASA Downlinks. Earth Exploration-satellite downlink from NASA SeaStar Ocean Color Project, Earth Observing System AM (EOS-AM), and the X-ray Timing Explorer (XTE).

No changes are planned. Use expected to continue.
2290- 2300 FIXED

MOBILE (except aeronautical

mobile)

SPACE RESEARCH

(space-to-Earth) (Deep Space only)

None NASA Deep Space. Space communications from NASA deep space probes Voyager 1 (Jupiter and beyond), Voyager 2 (Jupiter, Saturn, and beyond), Galileo (Jupiter), the NASAESA cooperative Ulysses mission (formerly International Solar Polar Mission), advanced composition explorer (ACE) spacecraft used in tracking, ranging, and command. No changes are planned. Use expected to continue.
2300- 2305 None

G123

None Experimental. Various experimental test stations operate in this band as well as other systems that are not in conformance with the National Table of Frequency Allocations. Under OBRA-93, this band was reallocated to the private sector for exclusive non-government use on Aug 95.
2305- 2310 None

US338 G123

None Experimental. Various experimental test stations operate in this band as well as other systems that are not in conformance with the National Table of Frequency Allocations. Under OBRA-93, this band was reallocated to the private sector for exclusive non-government use on Aug 95.
2310- 2320 Fixed

Mobile US339

Radiolocation G2

S5.396 US327 US338 G120

None Fixed & Mobile. Mobile use both on ground and airborne are for air-to-ground video telemetry, air combat training systems, guided weapons systems and robotics control.

Experimental. Various experimental test stations perform RDT&E activities in this band.

No changes are planned. Use expected to continue.
2320- 2345 Fixed

Mobile US276

Radiolocation G2

S5.396 US327 US328 G120

None Fixed & Mobile. Mobile use both on ground and airborne are for air-to-ground video telemetry, air combat training systems, guided weapons systems and robotics control.

Experimental. Various experimental test stations perform RDT&E activities in this band.

No changes are planned. Use expected to continue.
2345- 2360 Fixed

Mobile US339

Radiolocation G2

S5.396 US327 G120

None Fixed & Mobile. Mobile use both on ground and airborne are for air-to-ground telemetry and robotics control.

Experimental. Various experimental test stations perform RDT&E activities in this band.

The wireless communications service will operate in this band and consists of fixed, mobile, satellite DARS, and radiolocation services.

Use expected to continue.

2360- 2390 MOBILE US276

RADIOLOCATION G2

Fixed

G120

None Fixed & Mobile. Mobile use both on ground and airborne are for air-to-ground telemetry and robotics control.

Telemetry. The 2360-2385 MHz band is used for defense and commercial aerospace purposes for telemetry in the flight testing and operation of aircraft, spacecraft, missiles, and scientific balloons at military test ranges and NASA centers.

Radio Astronomy. Arecibo operates a planetary radar system on 2380 MHz.

Experimental. Various experimental test stations perform RDT&E activities in this band.

The 2385- 2390 MHz band was identified for reallocation to the private sector on January 1, 2005 under the BBA-97. Use is expected for Unlicensed PCS.

Use expected to continue.

2390- 2400 None

G122

None Experimental. Various experimental test stations perform RDT&E activities in this band. The 2390- 2450 MHz band was identified for reallocation to the private sector on January 1, 2005 under OBRA 93.

Use expected to continue.

2400- 2402 None

S5.150 G123

ISM S5.150 NASA Downlinks. NASA operates an RF modem link to provide internet connectivity for international support of Russia US space missions.

Manned Flight. Band to used on NIB basis for wireless LAN operations aboard the international space station.

ISM. The band 2400-2500 MHz (center frequency 2450 MHz) is designated for industrial, scientific and medical (ISM) applications.

Experimental. Various experimental test stations perform RDT&E activities in this band.

The 2390- 2450 MHz band was identified for reallocation to the private sector on January 1, 2005 under OBRA 93.

Use expected to continue.

2402- 2417 None

S5.150 G122

ISM S5.150 NASA Downlinks. NASA operates an RF modem link to provide internet connectivity for international support of Russia US space missions.

Manned Flight. Band to used on NIB basis for wireless LAN operations aboard the international space station.

ISM. The band 2400-2500 MHz (center frequency 2450 MHz) is designated for industrial, scientific and medical (ISM) applications.

Experimental. Various experimental test stations perform RDT&E activities in this band.

The 2390- 2450 MHz band was identified for reallocation to the private sector on January 1, 2005 under OBRA 93.

Use expected to continue.

2417- 2450 Radiolocation G2

S5.150 S5.282 G124

ISM S5.150 NASA Downlinks. NASA operates an RF modem link to provide internet connectivity for international support of Russia US space missions.

Manned Flight. Band to used on NIB basis for wireless LAN operations aboard the international space station.

ISM. The band 2400-2500 MHz (center frequency 2450 MHz) is designated for industrial, scientific and medical (ISM) applications.

Experimental. Various experimental test stations perform RDT&E activities in this band.

The 2390- 2450 MHz band was identified for reallocation to the private sector on January 1, 2005 under OBRA 93.

Use expected to increase.

2450- 2483.5 None

S5.150 US41

Radiolocation US41

ISM S5.150

NASA Downlinks. NASA operates an RF modem link to provide internet connectivity for international support of Russia US space missions.

Manned Flight. Band to used on NIB basis for wireless LAN operations aboard the international space station.

ISM. The band 2400-2500 MHz (center frequency 2450 MHz) is designated for industrial, scientific and medical (ISM) applications.

Fixed. Some point-to-point microwave systems support Federal operations in this band.

Experimental. Various experimental test stations perform RDT&E activities in this band.

No changes are planned. Use expected to increase.
2483.5- 2500 MOBILE-SATELLITE (space-to-Earth) US319

RADIODETERMINATION-SATELLITE (space-to-Earth) S5.398

S5.150 US41 S5.402

Radiolocation US41

ISM S5.150

Point-to-Point. NASA also operates point-to-point microwave links at some of its centers to its outlying sites in support of space programs.

Manned Flight. Band to used on NIB basis for wireless LAN operations aboard the international space station.

Tactical & Training. Various tactical and training operations are conducted in various military test ranges.

ISM. The band 2400-2500 MHz (center frequency 2450 MHz) is designated for industrial, scientific and medical (ISM) applications.

Experimental. NASA conducts experimental testing of satellite transmitters supporting the NASA Commercial Experimental Transporter (COMET).

No changes are planned. Use expected to continue.
2500- 2520 None

US205 US269

None Tactical & Training. Tactical and training operations are conducted at various military test ranges on an NIB basis. Use expected to continue.
2520- 2640 None

US205 US269 S5.339

None Broadcasting. An authorized mutual aid agreement is in effect for educational support to a local community.

Experimental. Experimental testing of communications equipment is conducted.

Tactical & Training. Tactical and training operations are conducted at various military test ranges on an NIB basis.

Use expected to continue.
2640- 2655 None

US205 US269 S5.339

Space Research (Passive) S5.339

Earth Exploration-Satellite (Passive) S5.339

Radio Astronomy. Observations of the cosmos are made in the band 2640-2750 MHz to study the low galactic background radiation and both the ionized hydrogen clouds and general diffuse radiation of the Galaxy. Scientific research is expected to continue and increase in this band.
2655- 2670 Earth Exploration Satellite (passive)

Radio Astronomy

Space Research (passive)

US205 US269

None Radio Astronomy. Observations of the cosmos are made in the band 2640-2750 MHz to study the low galactic background radiation and both the ionized hydrogen clouds and general diffuse radiation of the Galaxy. Scientific research is expected to continue and increase in this band.
2670- 2690 Earth Exploration-Satellite

(Passive)

Radio Astronomy

Space Research (passive)

US205 US269

None Space Research. Space-based observations and measurements to advance many areas of global change research such as water salinity, soil moisture, etc. are made in this band.

Radio Astronomy. Observations of the cosmos are made in the band 2640-2750 MHz to study the low galactic background radiation and both the ionized hydrogen clouds and general diffuse radiation of the Galaxy.

Scientific research is expected to continue and increase in this band.

2690- 2700 EARTH EXPLORATION-SATELLITE (passive)

RADIO ASTRONOMY

SPACE RESEARCH (passive)

US74 US246

None Space Research. Space-based observations and measurements to advance many areas of global change research such as water salinity, soil moisture, etc. are made in this band.

Radio Astronomy. Observations of the cosmos are made in the band 2640-2750 MHz to study the low galactic background radiation and both the ionized hydrogen clouds and general diffuse radiation of the Galaxy.

Scientific research is expected to continue and increase in this band.
2700- 2900 AERONAUTICAL RADIONAVIGATION

METEOROLOGICAL AIDS

Radiolocation

US18 S5.337 S5.423 G2 G15

None Surveillance Radars. The FAA and military services operate airport surveillance radars in this band for the management and control of aircraft in at around airports and military installations.

WXD Radars. Large numbers of weather radars, including NEXRAD, operate in this band.

Radio Astronomy. Observations of the cosmos are made in the band 2640-2750 MHz to study the low galactic background radiation and both the ionized hydrogen clouds and general diffuse radiation of the Galaxy.

No changes are planned. Use expected to continue.
2900- 3000 MARITIME RADIONAVIGATION

Radiolocation

US44 US316 S5.427 G56

METEOROLOGICAL AIDS US316 Maritime Radionav. The Coast Guard and, to a lesser degree, the Navy operate numerous radar beacons and radiolocation systems providing maritime radionavigation services.

Military Radars. This band is used by the military services' radiolocation systems throughout the U.S.

WXD Radars. The Federal government's NEXRAD weather radars operate in this band.

Use expected to continue.

WRC-03 agenda item to pursue co-primary radiolocation allocation.

3000- 3100 MARITIME RADIONAVIGATION

Radiolocation

US44 S5.427 G56

None Military Radars. This band is extensively used by the military services' radiolocation systems throughout the U.S.

Maritime Radionav. The Coast Guard and, to a lesser degree, the Navy operate maritime radionavigation systems in this band.

Use expected to continue.

WRC-03 agenda item to pursue co-primary radiolocation allocation.

3100- 3300 RADIOLOCATION

Earth Exploration-Satellite (active)

Space Research (active)

MOD S5.149 US110 G59

None Military Radars. This band is extensively used by all the military services' radiolocation systems throughout the U.S.

Space Research. NASA space-based measurements supporting geodetic and geologic sciences, etc., are made in this band.

No changes are planned. Use expected to increase.
3300- 3400 RADIOLOCATION

S5.149 US108 G31

None Military Radars. This band is extensively used by the military services' radiolocation systems throughout the U.S. No changes are planned. Use expected to increase.
3400- 3410 RADIOLOCATION

S5.149 US108 S5.282 G31

None Military Radars. This is a critical radar band and is used extensively by all the military services. No changes are planned. Use expected to increase.
3410- 3500 RADIOLOCATION

S5.149 US108 G31

None Military Radars. This is a critical radar band and is used extensively by all the military services. No changes are planned. Use expected to increase.
3500- 3600 AERONAUTICAL RADIONAVIGATION

(Ground-based)

RADIOLOCATION

US110 G59 G110

None Military Radars. This is a critical radar band and is used extensively by all the military services. In particular, the U.S. Navy uses this band for surveillance and precision approach radars to support its naval air operations. No changes are planned. Use expected to continue.
3600- 3700 AERONAUTICAL RADIONAVIGATION

(Ground-based)

RADIOLOCATION

US110 US245 G59 G110

None Military Radars. This is a critical radar band and is used extensively by all the military services. In particular, the military services operate fixed and mobile radionavigational systems in this band as well as performing sensor and navigational system calibrations.

Experimental. Research, developmental, test and evaluation of various radiolocation devices are made in this band.

The 3650- 3700 MHz band was reallocated to the private sector on Jan 1, 1999 under OBRA-93.

Use expected to continue.

3700- 4200 None None Earth Stations. The military services operate earth stations that receive voice, data, video signals from an international common carrier GSO satellite system.

Experimental. Various Federal agencies operate test stations of radiolocation systems on an NIB basis.

Use expected to increase.
4200- 4204 AERONAUTICAL RADIONAVIGATION

US261 S5.440

None Aero-Radionav. Aircraft operate radio altimeters in this band.

Passive Sensing. NASA conducts passive remote sensing of sea surface topography and sea temperature, currents, and wind speed.

No changes are planned. Use expected to continue.
4204- 4400 AERONAUTICAL RADIONAVIGATION

US261 S5.440

None Aero-Radionav. Aircraft operate radio altimeters in this band.

Passive Sensing. NASA conducts passive remote sensing of sea surface topography and sea temperature, currents, and wind speed.

No changes are planned. Use expected to continue.
4400- 4500 FIXED

MOBILE

None Tactical & Training. This band is heavily used for military tactical and training communications, both for line-of-sight, troposcatter and tactical data links.

NASA. Used on NIB basis for development of aircraft video downlinks.

No changes are planned. Use expected to increase.
4500- 4635 FIXED

MOBILE

US245

None Tactical & Training. This band is heavily used for military tactical and training communications, both for line-of-sight and troposcatter. Additionally, the DOD operates tactical data links, drone command and control systems, and numerous other systems.

NASA. Used on NIB basis for development of aircraft video downlinks.

Radio Astronomy. Continuum observations are performed in this band.

No changes are planned. Use expected to increase.
4635- 4660 None

US245 G125

None Fixed & Mobile. On an NIB basis, numerous Federal fixed operations use this band for point-to-point microwave, air combat training systems, tactical data links, drone command and control systems, and numerous other systems.

Radio Astronomy. Continuum observations are performed in this band.

The 4635-4685 MHz band that was reclaimed and 4940-4990 MHz was substituted for reallocation under OBRA-93.

Use expected to increase.

4660- 4685 None

G122

None Fixed & Mobile. On an NIB basis, numerous Federal fixed operations use this band for point-to-point microwave, air combat training systems, tactical data links, drone command and control systems, and numerous other systems.

Radio Astronomy. Continuum observations are performed in this band.

The 4635-4685 MHz band that was reclaimed and 4940-4990 MHz was substituted for reallocation under OBRA-93.

Use expected to increase.

4685- 4800 FIXED

MOBILE

US245

None Fixed & Mobile. On an NIB basis, numerous Federal fixed operations use this band for point-to-point microwave, air combat training systems, tactical data links, drone command and control systems, and numerous other systems.

Radio Astronomy. Continuum observations are performed in this band.

No changes are planned. Use expected to increase.
4800- 4825 FIXED

MOBILE

S5.149

None Fixed & Mobile. Numerous Federal fixed operations use this band for point-to-point microwave, air combat training systems, tactical data links, drone command and control systems, and numerous other systems.

Radio Astronomy. Continuum observations are performed in this band.

No changes are planned. Use expected to increase
4825- 4835 FIXED

MOBILE

S5.149 US203

None Tactical & Training. This band is heavily used for military tactical and training communications, both for line-of-sight and troposcatter. Additionally, the DOD operates tactical data links, drone command and control systems, and numerous other systems.

Radio Astronomy. Extremely useful in studying the brightness distributions of both galactic and extragalactic objects such as ionized hydrogen clouds and supernova remnants.

No changes are planned. Use expected to increase.
4835- 4950 FIXED

MOBILE

S5.149

None Tactical & Training. This band is heavily used for military tactical and training communications, both for line-of-sight and troposcatter. Additionally, the DOD operates tactical data links, drone command and control systems, and numerous other systems.

Radio Astronomy. Continuum observations are performed in this band.

The 4940-4990 MHz band, in lieu of the 4635-4685 MHz band that was reclaimed, was reallocated to the private sector under OBRA-93.

Use expected to increase.

4950- 4990 FIXED

MOBILE

S5.149 S5.339 US257

Space Research (passive) S5.339

Earth Exploration-Satellite (passive) S5.339

Fixed & Mobile. This band is heavily used for military tactical and training communications, both for line-of-sight and troposcatter. Additionally, the DOD operates tactical data links, drone command and control systems, and numerous other systems.

Radio Astronomy. This band is extremely useful in studying the brightness distributions of both galactic and extragalactic objects such as ionized hydrogen clouds and supernova remnants.

The 4940-4990 MHz band, in lieu of the 4635-4685 MHz band that was reclaimed, was reallocated to the private sector under OBRA-93.

Use expected to increase.

4990- 5000 RADIO ASTRONOMY

Space Research (passive)

S5.149 US74 US246

None Radio Astronomy. This band is extremely useful in studying the brightness distributions of both galactic and extragalactic objects such as ionized hydrogen clouds and supernova remnants.

Passive Sensing. Passive remote sensing of estuarine temperatures is done in this band. Passive sensing flight instruments include R-600.

Scientific research is expected to increase in this band.
5000- 5150 AERONAUTICAL

RADIONAVIGATION

S5.367 S5.444 G126 US211 US260

AERONAUTICAL MOBILE-SATELLITE (R) S5.367

Aeronautical Mobile US260

Aero-Radionav. Microwave landing systems operate in this band. As the U.S. transitions to satellite-based navigation, additional MLS development is not anticipated. MLS phase-down is expected to begin in 2008. FAA and the civil aviation community are investigating aeronautical applications in this band to include (1) an extension of the tuning range of the TDWR; and or (2) weather functions for a planned multipurpose terminal radar for around the year 2013.
5150- 5250 AERONAUTICAL

RADIONAVIGATION

US211 US260 US307

Aeronautical Mobile US260 Experimental. Numerous test and evaluations are being conducted on various radiocommunications systems in this band. No changes are planned. Use expected to continue.
5250- 5255 RADIOLOCATION

EARTH EXPLORATION-SATELLITE (active)

SPACE RESEARCH

S5.447D

US110 G59

None Military Radars. The military services have various types of radars (missile detection, imaging, synthetic aperture radar, frequency agile, ship sensor, etc.) operating in this band.

Space Research. NASA, in this band, participates in joint ventures with the ESA on space-based observations and measurements of surface topography, soil moisture, sea surface height, etc. (e.g., NASA TOPEXPoseidon Mission). Active sensor flight instruments include: ALT/SSALT, SIR-C, SRTM, RADARSAT.

No changes are planned. Use expected to increase.
5255- 5350 RADIOLOCATION

EARTH EXPLORATION-SATELLITE (active)

SPACE RESEARCH (active)

US110 G59

None Military Radars. The military services have various types of radars (missile detection, imaging, synthetic aperture radar, frequency agile, ship sensor, etc.) operating in this band.

Space Research. NASA, in this band, participates in a joint venture with the ESA on space-based observations and measurements of surface topography, soil moisture, etc. (NASA TOPEXPoseidon Mission). Active sensor flight instruments include: ALT/SSALT, SIR-C, SRTM, RADARSAT.

No changes are planned. Use expected to increase.
5350- 5460 EARTH EXPLORATION-SATELLITE (active)

AERONAUTICAL RADIONAVIGATION

RADIOLOCATION

S5.448B S5.449 US48 G56

None Airborne WXD Radars. Aircraft employ airborne weather radars that operate in the 5350-5470 MHz band for storm avoidance.

Military Radars. The military services employ transportable and mobile radars in this band.

WXD Radars. Numerous Federal agencies employ ground weather radars in this band though they are not in conformance to the National Table of Frequency Allocations.

NASA. This band is used for missile tracking via radar.

No changes are planned. Use expected to increase.
5460- 5470 RADIONAVIGATION

Radiolocation

US49 US65 S5.449 G56

None Airborne WXD Radars. Aircraft employ airborne weather radars that operate in the 5350-5470 MHz band for storm avoidance.

Radars. Some radionavigational surveillance radars operate in this band along with numerous radiolocation radars.

NASA. This band is used for missile tracking via radar.

Experimental. Experimental RDT&E testing of radars occurs in this band.

No changes are planned. Use expected to increase.
5470- 5600 MARITIME RADIONAVIGATION

Radiolocation

US50 US65 G56

None Maritime Radionav. The USCG operates maritime radionavigation aids throughout the United States.

Radars. This band is used extensively for transportable and mobile radars as well as for weather radars.

NASA. This band is used for missile tracking via radar.

Experimental. Experimental testing of radars occurs in this band for RDT&E.

No changes are planned. Use expected to increase.
5600- 5650 MARITIME RADIONAVIGATION

METEOROLOGICAL AIDS

Radiolocation

US51 US65 S5.452 G56

None Radars. This band contains fixed, transportable, and mobile radars whose purposes are used primarily for weather radars, surveillance radars, test range instrumentation radars, and experimental radar testing. The Navy operates its primary surface search radar in this band.

Maritime Radionav. Shipborne radars in this band provide coastal navigation information.

WXD Radars. Some of the weather radars operating in this band are FAA terminal Doppler weather radars providing hazardous weather detection at airports.

NASA. This band is used for missile tracking via radar.

No changes are planned. Use expected to increase.
5650- 5670 RADIOLOCATION

S5.282 G2

None Radars. This band contains fixed, transportable, and mobile radars whose purposes are used primarily for weather radars, surveillance radars, test range instrumentation radars, and experimental radar testing.

NASA. This band is used for missile tracking via radar.

No changes are planned. Use expected to increase.
5670- 5725 RADIOLOCATION

G2

None Radars. This band contains fixed, transportable, and mobile radars whose purposes are used primarily for weather radars, surveillance radars, test range instrumentation radars, and experimental radar testing.

NASA. This band is used for missile tracking via radar.

No changes are planned. Use expected to increase.
5725- 5830 RADIOLOCATION

S5.150 G2

ISM S5.150 Military Radars. This band contains fixed, transportable, and mobile radars whose purposes are used primarily for surveillance radars, test range instrumentation radars, airborne transponders and experimental radar testing. Extensive use of these radars is in support of national and military test range operations in the tracking and control of manned and unmanned airborne vehicles.

NASA. This band is used for missile tracking via radar.

ISM. The band 5725-5875 MHz (center frequency 5800 MHz) is designated for industrial, scientific and medical (ISM) applications.

No changes are planned. Use expected to increase.
5830- 5850 RADIOLOCATION

S5.150 G2

ISM S5.150 Military Radars. This band contains fixed, transportable, and mobile radars whose purposes are used primarily for surveillance radars, test range instrumentation radars, airborne transponders and experimental radar testing. Extensive use of these radars is in support of national and military test range operations in the tracking and control of manned and unmanned airborne vehicles. Other radars support missile and satellite tracking during launch and on-orbit.

NASA. This band is used for missile tracking via radar.

ISM. The band 5725-5875 MHz (center frequency 5800 MHz) is designated for industrial, scientific and medical (ISM) applications.

No changes are planned. Use expected to increase.
5850- 5875 RADIOLOCATION

S5.150 US245 G2

ISM S5.150 Military Radars. This band contains fixed, transportable, and mobile radars whose purposes are used primarily for surveillance radars, test range instrumentation radars, airborne transponders and experimental radar testing. Extensive use of these radars is in support of national and military test range operations in the tracking and control of manned and unmanned airborne vehicles. Other radars support missile and satellite tracking during launch and on-orbit.

NASA. This band is used for missile tracking via radar.

ISM. The band 5725-5875 MHz (center frequency 5800 MHz) is designated for industrial, scientific and medical (ISM) applications.

No changes are planned. Use expected to increase.
5875- 5925 RADIOLOCATION

US245 G2

None Military Radars. This band contains fixed, transportable, and mobile radars whose purposes are used primarily for surveillance radars, test range instrumentation radars, airborne transponders and experimental radar testing. Extensive use of these radars is in support of national and military test range operations in the tracking and control of manned and unmanned airborne vehicles.

NASA. This band is used for missile tracking via radar.

No changes are planned. Use expected to increase.
5925- 6425 None None Earth Stations. Federal agencies operate earth stations that transmit voice, data, video signals to an international common carrier GSO satellite system. Some of the users are BBG, FAA, and military services. Use expected to increase.
6425- 6429 None

S5.440 S5.458

Standard Frequency-Satellite S5.440 Research. NASA participates in remote microwave scanning measurements made over oceans for oceanographic studiesresearch.

Experimental. RDT&E of radiocommunications equipment is performed on national and military test ranges as well as at contractor factories.

Use expected to continue.
6429- 6525 None

S5.458

None Research. NASA participates in remote microwave scanning measurements made over oceans for oceanographic studiesresearch.

Experimental. RDT&E of radiocommunications equipment is performed on national and military test ranges as well as at contractor factories.

Use expected to continue.
6525- 6700 None

S5.149 S5.458

None Research. NASA participates in remote microwave scanning measurements made over oceans for oceanographic studiesresearch.

Experimental. RDT&E of radiocommunications equipment is performed on national and military test ranges as well as at contractor factories.

Use expected to continue.
6700- 6875 None

S5.149 S5.458

None Research. NASA participates in remote microwave scanning measurements made over oceans for oceanographic studiesresearch.

Experimental. RDT&E of radiocommunications equipment is performed on national and military test ranges as well as at contractor factories.

Use expected to continue.
6875- 7075 None

S5.149 S5.458

None Research. NASA participates in remote microwave scanning measurements made over oceans for oceanographic studiesresearch.

Experimental. RDT&E of radiocommunications equipment is performed on national and military test ranges as well as at contractor factories.

Use expected to continue.
7075- 7125 None

S5.458

None Research. NASA participates in remote microwave scanning measurements made over oceans for oceanographic studies research.

Experimental. Some RDT&E of radiocommunications equipment is performed in this band.

Use expected to continue.
7125- 7145 FIXED

S5.458 G116

SPACE OPERATIONS G116 Point-to-Point. This band is used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's national and military test range communications, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc.

Research. NASA participates in remote microwave scanning measurements made over oceans for oceanographic studiesresearch.

Experimental. Some experimental test stations operate at national and military test ranges. Also, NASA is conducting development testing at the DSN 26m antenna in support of Mars Global Surveyor..

No changes are planned. Use expected to continue.
7145- 7155 FIXED

SPACE RESEARCH (Earth-to-space)

S5.458 US252 G116

SPACE OPERATIONS G116 Point-to-Point. This band is used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's national and military test range communications, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc.

NASA Deep Space. Deep space command and control communications to Earth-launched vehicles.

Research. NASA participates in remote microwave scanning measurements made over oceans for oceanographic studiesresearch.

Experimental. Some experimental test stations operate at national and military test ranges.

No changes are planned. Use expected to continue.
7155- 7190 FIXED

SPACE RESEARCH (Earth-to-space)

S5.458 US252

None NASA Deep Space. NASA tracking, ranging, and command uplinks to deep space probes Voyager 1 (Jupiter and beyond), Voyager 2 (Jupiter, Saturn, and beyond), Galileo (Jupiter), Near Earth Asteroid Rendezvous (NEAR), Mars Global Surveyor spacecrafts and others.

Research. NASA participates in remote microwave scanning measurements made over oceans for oceanographic studiesresearch.

Point-to-Point. This band is used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's national and military test range communications, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc.

No changes are planned. Use expected to continue.
7190- 7235 FIXED

SPACE RESEARCH

(Earth-to-space)

S5.458

None NASA Near Earth. NASA tracking, ranging, and command uplinks in support of various programs such as the Summer Undergraduate Research Fellowship Satellites I & II (SURFSAT), Space Program Wideband Data Collection System, international remote sensing satellites, etc.

Research. NASA participates in remote microwave scanning measurements made over oceans for oceanographic studiesresearch.

Point-to-Point. This band is used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's national and military test range communications, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc.

No changes are planned. Use expected to continue.
7235- 7250 FIXED

S5.458

None Point-to-Point. This band is primarily used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc. No changes are planned. Use expected to continue.
7250- 7300 FIXED-SATELLITE (space-to-Earth)

MOBILE-SATELLITE (space-to-Earth)

Fixed

G117

None Point-to-Point. This band is primarily used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc.

Military SATCOM. In this band, the DOD uses the Defense Satellite Communications Systems (DSCS) downlinks for global voice and data communications as well as NATO SATCOM .

TT&C. Also, space tracking & telecommand of communications satellites is done in this band.

No changes are planned. Use expected to continue.
7300- 7450 FIXED

FIXED-SATELLITE (space-to-Earth)

Mobile-Satellite

(space-to-Earth)

G117

None Point-to-Point. This band is primarily used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc.

Military SATCOM. In this band, the DOD uses the Defense Satellite Communications Systems (DSCS) downlinks for global voice and data communications as well as NATO SATCOM.

No changes are planned. Use expected to continue.
7450- 7550 FIXED

FIXED-SATELLITE (space-to-Earth)

METEOROLOGICAL-

SATELLITE (space-to-Earth)

Mobile-Satellite

(space-to-Earth)

G104 G117

None Point-to-Point. This band is primarily used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc.

Military SATCOM. In this band, the DOD uses the Defense Satellite Communications Systems (DSCS) downlinks for global voice and data communications as well as NATO SATCOM.

No changes are planned. Use expected to continue.
7550- 7750 FIXED

FIXED-SATELLITE (space-to-Earth)

Mobile-Satellite

(space-to-Earth)

G117

None Point-to-Point. This band is primarily used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc.

Military SATCOM. In this band, the DOD uses the Defense Satellite Communications Systems (DSCS) downlinks for global voice and data communications as well as NATO SATCOM.

TT&C. Also, space tracking & telecommand of communications satellites is done in this band.

No changes are planned. Use expected to continue.
7750- 7850 FIXED

METEOROLOGICAL-

SATELLITE (space-to-Earth)

S5.461B

None Point-to-Point. This band is primarily used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc. No changes are planned. Use expected to continue.
7850- 7900 FIXED

None Point-to-Point. This band is primarily used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc. No changes are planned. Use expected to continue.
7900- 8025 FIXED-SATELLITE (Earth-to-space)

MOBILE-SATELLITE (Earth-to-space)

Fixed

G117

None Point-to-Point. This band is primarily used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc.

Military SATCOM. In this band, the DOD uses the Defense Satellite Communications Systems (DSCS) uplinks for global voice and data communications as well as NATO SATCOM.

TT&C. Also, space tracking & telecommand of SATCOMs are done in this band.

No changes are planned. Use expected to continue.
8025- 8175 EARTH EXPLORATION-SATELLITE (space-to-Earth)

FIXED

FIXED-SATELLITE (Earth-to-space)

Mobile-Satellite (Earth-to-space) (No Airborne Transmission)

US258 G117

None Point-to-Point. This band is primarily used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc.

Military SATCOM. In this band, the DOD uses the Defense Satellite Communications Systems (DSCS) uplinks for global voice and data communications as well as NATO SATCOM.

TT&C. Also, space tracking & telecommand of SATCOMs are done in this band.

Earth Exploration. The 8025-8400 MHz band is the primary wideband data return for spaceborne sensors.

NASA Downlinks. NASA's space-to-ground link for many Earth exploration-satellite systems operate in this band.

No changes are planned. Use expected to continue.
8175- 8215 EARTH EXPLORATION-SATELLITE (space-to-Earth)

FIXED

FIXED-SATELLITE (Earth-to-space)

METEOROLOGICAL- SATELLITE (Earth-to-space)

Mobile-Satellite (Earth-to-space) (No Airborne Transmissions)

US258 G104 G117

None Point-to-Point. This band is primarily used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc.

Military SATCOM. In this band, the DOD uses the Defense Satellite Communications Systems (DSCS) uplinks for global voice and data communications as well as NATO SATCOM.

TT&C. Also, space tracking & telecommand of SATCOMs are done in this band.

Earth Exploration. The 8025-8400 MHz band is the primary wideband data return for spaceborne sensors.

NASA Downlinks. NASA's space-to-ground link for many Earth exploration-satellite systems operate in this band.

No changes are planned. Use expected to continue.
8215- 8400 EARTH EXPLORATION-SATELLITE (space-to-Earth)

FIXED

FIXED-SATELLITE (Earth-to-space)

Mobile-Satellite (Earth-to-space) (No Airborne Transmissions)

US258 G117

None Point-to-Point. This band is primarily used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, power management, etc.

Military SATCOM. In this band, the DOD uses the Defense Satellite Communications Systems (DSCS) uplinks for global voice and data communications.

TT&C. Also, space tracking & telecommand of SATCOMs are done in this band.

Earth Exploration. The 8025-8400 MHz band is the primary wideband data return for spaceborne sensors.

NASA Downlinks. NASA's space-to-ground link for many Earth exploration-satellite systems operate in this band.

No changes are planned. Use expected to continue.
8400- 8450 FIXED

SPACE RESEARCH (space-to-Earth) (Deep Space only)

None Point-to-Point. This band is primarily used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, etc.

NASA Deep Space. Space communications in this band are used for tracking and command from NASA deep space probes Voyager 1 (Jupiter and beyond), Voyager 2 (Jupiter, Saturn, and beyond), Galileo (Jupiter), the NASAESA cooperative Ulysses mission (formerly International Solar Polar Mission), Near Earth Asteroid Rendezvous (NEAR) , Mars Global Surveyor spacecrafts.

No changes are planned. Use expected to continue.
8450- 8500 FIXED

SPACE RESEARCH (space-to-Earth)

None Point-to-Point. This band is primarily used for fixed point-to-point microwave links associated with many Federal agencies' missions including the DOD's, and the remoting of data for such functions as air traffic control radar, weather, vessel traffic information, etc.

Space Research. Some Federal agencies are conducting research and downlinking collected data from such activities as the measurement of Earth & space phenomena, seismic activity, etc.

NASA. NASA use includes downlinks for remote sensing spacecraft including the EOS and the Surfsat. In Addition, the band is under consideration for the Next Generation Space Telescope.

No changes are planned. Use expected to continue.
8500- 8550 RADIOLOCATION

US110 G59

None Radars. Mobile and fixed radars operate in this band for RDT&E support, air and surface target tracking, and for NASA's planetary radar. No changes are planned. Use expected to continue.
8550- 8650 RADIOLOCATION

EARTH EXPLORATION-SATELLITE (active

SPACE RESEARCH (active)

US110 G59

None Military Radars. Various military target tracking radars and experimental radars undergoing RDT&E use this band extensively.

Space Research. Also in this band are synthetic aperture radars aboard space-borne vehicles studying Earth sciences.

No changes are planned. Use expected to continue.
8650- 8750 RADIOLOCATION

US53 US110 G59

Aeronautical Radionavigation US53 Military Radars. This band is used by the military services for mobile and transportable target acquisition radars, radar RDT&E activities on national and military test ranges, and tactical and training exercises. No changes are planned. Use expected to continue.
8750- 8850 RADIOLOCATION

US53 US110 G59

Aeronautical Radionavigation US53 Military Radars. This band is used by the military services for mobile and transportable target acquisition radars, radar RDT&E activities on national and military test ranges, and tactical and training exercises. No changes are planned. Use expected to continue.
8850- 9000 RADIOLOCATION

US53 US110 G59

Aeronautical Radionavigation US53 Military Radars. This band is used by the military services for mobile and transportable target acquisition radars, radar RDT&E activities on national and military test ranges, and tactical and training exercises. No changes are planned. Use expected to continue.
9000- 9200 AERONAUTICAL RADIONAVIGATION

Radiolocation

US48 US54 S5.337 G2 G19

None Aero-Radionav. This band is used extensively by the military services for precision approach radars. No changes are planned. Use expected to increase. The FAA has plans for ASDE-X radars.
9200- 9225 MARITIME RADIONAVIGATION

Radiolocation

US110 S5.472 S5.474 G59

None Military Radars. This band is used by the military services for mobile and transportable target acquisition radars, radar RDT&E activities on national and military test ranges, and tactical and training exercises. No changes are planned. Use expected to increase.
9225- 9300 MARITIME RADIONAVIGATION

Radiolocation

US110 S5.472 S5.474 G59

None Military Radars. This band is used by the military services for mobile and transportable target acquisition radars, radar RDT&E activities on national and military test ranges, and tactical and training exercises. No changes are planned. Use expected to increase.
9300- 9500 RADIONAVIGATION

Meteorological Aids

Radiolocation

US51 US66 US67 US71 S5.427 S5.474 S5.476 G56

None Maritime Radionav. Used by the USCG for harbor surveillance radars in support of vessel traffic services.

WXD Radars. Numerous Federal agencies have weather radars operating in this band.

Military Radars. The military services use this band for their mobile and transportable radars.

No changes are planned. Use expected to increase.
9500- 9800 RADIOLOCATION

EARTH EXPLORATION-SATELLITE (active)

SPACE RESEARCH (active)

S5.479 US110

None Military Radars. Used extensively for military tactical and training in the use of its various radar systems. Some Military RDT&E of radars systems is done in this band.

Research. Supports NASA airborne radar in the research and experimentation of convective storm and mesoscale phenomena. Also used by NASA and collaborators for active microwave sensing of the Earth's surface.

No changes are planned. Use expected to increase.
9800- 9975 RADIOLOCATION

US110

None Military Radars. Used extensively for military tactical and training in the use of its various radar systems. Some RDT&E of radars systems is done in this band. No changes are planned. Use expected to increase.
9975- 10000 RADIOLOCATION

S5.479 US110

Meteorological-Satellite S5.479 Military Radars. Used for military tactical and training in the use of its various radar systems. Some RDT&E of radars systems is done in this band.

WXD Satellite. NOAA meteorological satellite radar operates in this band.

No changes are planned. Use expected to increase.

Go to Federal Spectrum Use Summary home page.
Go to NTIA/OSM home page.
Go to NTIA home page.