Allocations

 
U.S. Non-Federal-Government Allocations
3650 - 3700 MHz
FIXED
FIXED-SATELLITE (space-to-Earth) NG169 NG185
MOBILE except aeronautical mobile


U.S. Federal Government Allocations
3650 - 3700 MHz


ITU Region 1 Allocations
3600 - 4200 MHz
FIXED
FIXED-SATELLITE (space-to-Earth)
Mobile


ITU Region 2 Allocations
3500 - 3700 MHz
FIXED
FIXED-SATELLITE (space-to-Earth)
MOBILE except aeronautical mobile
Radiolocation 5.433


ITU Region 3 Allocations
3600 - 3700 MHz
FIXED
FIXED-SATELLITE (space-to-Earth)
MOBILE except aeronautical mobile
Radiolocation 5.433


SpectrumWiki


Footnotes


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

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

US109 The band 3650-3700 MHz is also allocated to the Federal radiolocation service on a primary basis at the following sites: St. Inigoes, MD (38° 10' N, 76° 23' W); Pascagoula, MS (30° 22' N, 88° 29' W); and Pensacola, FL (30° 21' 28'' N, 87° 16' 26'' W). The FCC shall coordinate all non-Federal operations authorized under 47 CFR Part 90 within 80 km of these sites with NTIA on a case-by-case basis. For stations in the Citizens Broadband Radio Service these sites shall be protected consistent with the procedures set forth in 47 CFR 96.15(b) and 96.67.

US349 The band 3650-3700 MHz is also allocated to the Federal radiolocation service on a non-interference basis for use by ship stations located at least 44 nautical miles in off-shore ocean areas on the condition that harmful interference is not caused to non-Federal operations.

NG169 After December 1, 2000, operations on a primary basis by the fixed-satellite service (space-to-Earth) in the band 3650-3700 MHz shall be limited to grandfathered earth stations. All other fixed-satellite service earth station operations in the band 3650-3700 MHz shall be on a secondary basis. Grandfathered earth stations are those authorized prior to December 1, 2000, or granted as a result of an application filed prior to December 1, 2000, and constructed within 12 months of initial authorization. License applications for primary operations for new earth stations, major amendments to pending earth station applications, or applications for major modifications to earth station facilities filed on or after December 18, 1998, and prior to December 1, 2000, shall not be accepted unless the proposed facilities are within 16.1 kilometers (10 miles) of an authorized primary earth station operating in the band 3650-3700 MHz. License applications for primary operations by new earth stations, major amendments to pending earth station applications, and applications for major modifications to earth station facilities, filed after December 1, 2000, shall not be accepted, except for changes in polarization, antenna orientation or ownership of a grandfathered earth station.

NG185 In the band 3650-3700 MHz, the use of the non-Federal fixed-satellite service (space-to-Earth) is limited to international inter-continental systems.

SpectrumWiki

 
Aeronautical Radio Altimeters
4 GHz Fixed Service Band
Geostationary Fixed Satellite Service (GSO FSS)
Citizens Broadband Radio Service (CBRS)
Wi-Fi
Common Carrier Fixed Point-to-Point Microwave
FCC Proposed Rules for Citizens Broadband Service
SPN-43 Shipborne Radar
Standard LTE Bands
UK Broadband
SPY-1 Shipborne Air Surveillance Radar
Through-wall Radar waiver
Actions to support FSS Earth stations in 3400-4200 MHz (WRC-15 Agenda Item 9.1.5)


Related Documents, Links, and Multimedia:
FCC Proceeding (4)
Band Plan (1)
Other (1)

Engineering Data

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