Allocations

 
U.S. Non-Federal-Government Allocations
4000 - 4200 MHz
FIXED
FIXED-SATELLITE (space-to-Earth) NG457A


U.S. Federal Government Allocations
3700 - 4200 MHz


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


ITU Region 2 Allocations
3700 - 4200 MHz
FIXED
FIXED-SATELLITE (space-to-Earth)
MOBILE except aeronautical mobile


ITU Region 3 Allocations
3700 - 4200 MHz
FIXED
FIXED-SATELLITE (space-to-Earth)
MOBILE except aeronautical mobile


SpectrumWiki

Band Uses (3.6 - 4.2 GHz)

Footnotes

NG182 In the band 3700-4200 MHz, the following provisions shall apply:

  (a) Except as provided in paragraph (c)(1), any currently authorized space stations serving the contiguous United States may continue to operate on a primary basis, but no applications for new space station authorizations or new petitions for market access shall be accepted for filing after June 21, 2018, other than applications by existing operators in the band seeking to make more efficient use of the band 4000-4200 MHz. Applications for extension, cancellation, replacement, or modification of existing space station authorizations in the band will continue to be accepted and processed normally.

  (b) In areas outside the contiguous United States, the band 3700-4000 MHz is also allocated to the fixed-satellite service (space-to-Earth) on a primary basis.

  (c) In the contiguous United States, i.e., the contiguous 48 states and the District of Columbia as defined by Partial Economic Areas Nos. 1-41, 43-211, 213-263, 265-297, 299-359, and 361-411, which includes areas within 12 nautical miles of the U.S. Gulf coastline (see § 27.6(m) of this chapter), the following provisions apply:

    (1) Incumbent use of the fixed-satellite service (space-to-Earth) in the band 3700-4000 MHz is subject to the provisions of §§ 25.138, 25.147, 25.203(n) and part 27, subpart O of this chapter;

    (2) Fixed service licensees authorized as of April 19, 2018, pursuant to part 101 of this chapter, must self-relocate their point-to-point links out of the band 3700-4200 MHz by December 5, 2023;

    (3) In the band 3980-4000 MHz, no new fixed or mobile operations will be permitted until specified by Commission rule, order, or notice.

NG457A  Earth stations on vessels (ESVs), as regulated under 47 CFR part 25, are an application of the fixed-satellite service and the following provisions shall apply:

  (a) In the band 3700-4200 MHz, ESVs may be authorized to receive FSS signals from geostationary satellites. ESVs in motion are subject to the condition that these earth stations may not claim protection from transmissions of non-Federal stations in the fixed and mobile except aeronautical mobile services. While docked, ESVs receiving in the band 4000-4200 MHz may be coordinated for up to 180 days, renewable. NG182 applies to incumbent licensees that provide service to ESVs in the band 3700-4000 MHz.

  (b) In the band 5925-6425 MHz, ESVs may be authorized to transmit to geostationary satellites on a primary basis.


SpectrumWiki

 
Aeronautical Radio Altimeters
4 GHz Fixed Service Band
Geostationary Fixed Satellite Service (GSO FSS)
Citizens Broadband Radio Service (CBRS)
Common Carrier Fixed Point-to-Point Microwave
FCC Proposed Rules for Citizens Broadband Service
SPN-43 Shipborne Radar
Standard LTE Bands
UK Broadband
WRC 23 Agenda Item 1.2 IMT identification
WRC-23 Agenda Item 1.3
802.11/WLAN/Wi-Fi/WiGig
IEEE 802.15.4 HRP UWB
Actions to support FSS Earth stations in 3400-4200 MHz (WRC-15 Agenda Item 9.1.5)
WRC-27 consideration of EESS (passive) allocations


Related Documents, Links, and Multimedia:
FCC Proceeding (5)
Other (1)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 3.6 GHz 3.9 GHz 4.2 GHz
Wavelength 8.3 cm 7.7 cm 7.1 cm
Band designator(s) SHF; S-band (IEEE) SHF; S-band (IEEE) SHF; C-band (IEEE)
Isotropic collecting area 5.5 cm2 4.7 cm2 4.1 cm2
Free space loss (1 m) 43.8 dB 44.3 dB 44.9 dB
Free space loss (1 km) 103.8 dB 104.3 dB 104.9 dB
Free space loss (10 km) 123.8 dB 124.3 dB 124.9 dB
Free space loss (100 km) 143.8 dB 144.3 dB 144.9 dB
Free space loss (1000 km) 163.8 dB 164.3 dB 164.9 dB
Free space loss
(35,786 km = GEO orbit)
194.9 dB 195.3 dB 196.0 dB
Free space loss (378,370 km = Moon) 215.4 dB 215.8 dB 216.5 dB
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