Allocations

 
U.S. Non-Federal-Government Allocations
335.4 - 399.9 MHz


U.S. Federal Government Allocations
335.4 - 399.9 MHz
FIXED
MOBILE


ITU Region 1 Allocations
335.4 - 387 MHz
FIXED
MOBILE


ITU Region 2 Allocations
335.4 - 387 MHz
FIXED
MOBILE


ITU Region 3 Allocations
335.4 - 387 MHz
FIXED
MOBILE


SpectrumWiki


Footnotes


5.254 The bands 235-322 MHz and 335.4-399.9 MHz may be used by the mobile-satellite service, subject to agreement obtained under No. 9.21, on condition that stations in this service do not cause harmful interference to those of other services operating or planned to be operated in accordance with the Table of Frequency Allocations except for the additional allocation made in footnote No. 5.256A.

G27 In the bands 225-328.6 MHz, 335.4-399.9 MHz, and 1350-1390 MHz, the fixed and mobile services are limited to the military services.

G100 The bands 235-322 MHz and 335.4-399.9 MHz are also allocated on a primary basis to the mobile-satellite service, limited to military operations.

SpectrumWiki

 
Mobile User Objective System (MUOS)
2019 World Radiocommunication Conference (WRC-19) Agenda Item 1.2
Military Mobile-Satellite Communications (NTIA)
IEEE 802.15.4 HRP UWB Standard
NASA Differential GPS (NTIA)
WRC-19 Agenda Item 1.2


Related Documents, Links, and Multimedia:
Occupancy Measurements (10)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 335.4 MHz 367.65 MHz 399.9 MHz
Wavelength 89.4 cm 81.5 cm 75.0 cm
Band designator(s) UHF UHF UHF
Isotropic collecting area 635.8 cm2 529.1 cm2 447.2 cm2
Free space loss (1 m) 23.0 dB 23.8 dB 24.2 dB
Free space loss (1 km) 83.0 dB 83.8 dB 84.2 dB
Free space loss (10 km) 103.0 dB 103.8 dB 104.2 dB
Free space loss (100 km) 123.0 dB 123.8 dB 124.2 dB
Free space loss (1000 km) 143.0 dB 143.8 dB 144.2 dB
Free space loss
(35,786 km = GEO orbit)
174.0 dB 174.8 dB 175.3 dB
Free space loss (378,370 km = Moon) 194.5 dB 195.3 dB 195.8 dB