Allocations

 
U.S. Non-Federal-Government Allocations
1675 - 1695 MHz
METEOROLOGICAL AIDS (radiosonde)
METEOROLOGICAL-SATELLITE (space-to-Earth) US88


U.S. Federal Government Allocations
1675 - 1695 MHz
METEOROLOGICAL AIDS (radiosonde)
METEOROLOGICAL-SATELLITE (space-to-Earth) US88


ITU Region 1 Allocations
1675 - 1690 MHz
METEOROLOGICAL AIDS
FIXED
METEOROLOGICAL-SATELLITE (space-to-Earth)
MOBILE except aeronautical mobile


ITU Region 2 Allocations
1675 - 1690 MHz
METEOROLOGICAL AIDS
FIXED
METEOROLOGICAL-SATELLITE (space-to-Earth)
MOBILE except aeronautical mobile


ITU Region 3 Allocations
1675 - 1690 MHz
METEOROLOGICAL AIDS
FIXED
METEOROLOGICAL-SATELLITE (space-to-Earth)
MOBILE except aeronautical mobile


SpectrumWiki


Footnotes


5.341 In the bands 1400-1727 MHz, 101-120 GHz and 197-220 GHz, passive research is being conducted by some countries in a programme for the search for intentional emissions of extraterrestrial origin.

Could not find US88

US211 In the bands 1670-1690, 5000-5250 MHz and 10.7-11.7, 15.1365-15.35, 15.4-15.7, 22.5-22.55, 24-24.05, 31.0-31.3, 31.8-32.0, 40.5-42.5, 116-122.25, 123-130, 158.5-164, 167-168, 191.8-200, and 252-265 GHz, applicants for airborne or space station assignments are urged to take all practicable steps to protect radio astronomy observations in the adjacent bands from harmful interference; however, US74 applies.

Could not find US289

SpectrumWiki

 
GOES, POES, & MetOp Weather Satellites
Radiosondes
WRC-27 consideration of MSS space-to-space links


Related Documents, Links, and Multimedia:
FCC Proceeding (2)
Occupancy Measurements (10)
Band Plan (1)
Legislation (1)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 1675 MHz 1685 MHz 1695 MHz
Wavelength 17.9 cm 17.8 cm 17.7 cm
Band designator(s) UHF; L-band (IEEE) UHF; L-band (IEEE) UHF; L-band (IEEE)
Isotropic collecting area 25.5 cm2 25.2 cm2 24.9 cm2
Free space loss (1 m) 36.9 dB 37.0 dB 37.0 dB
Free space loss (1 km) 96.9 dB 97.0 dB 97.0 dB
Free space loss (10 km) 116.9 dB 117.0 dB 117.0 dB
Free space loss (100 km) 136.9 dB 137.0 dB 137.0 dB
Free space loss (1000 km) 156.9 dB 157.0 dB 157.0 dB
Free space loss
(35,786 km = GEO orbit)
188.0 dB 188.1 dB 188.1 dB
Free space loss (378,370 km = Moon) 208.5 dB 208.5 dB 208.6 dB