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Engineering data
Allocations
U.S. Non-Federal-Government Allocations
401
-
402
MHz
METEOROLOGICAL AIDS (radiosonde)
US70
SPACE OPERATION (space-to-Earth)
Earth exploration-satellite (Earth-to-space)
Meteorological-satellite (Earth-to-space)
US64
US384
FCC Rule Parts:
MEDRadio (95I)
U.S. Federal Government Allocations
401
-
402
MHz
METEOROLOGICAL AIDS (radiosonde)
US70
SPACE OPERATION (space-to-Earth)
EARTH EXPLORATION-SATELLITE (Earth-to-space)
METEOROLOGICAL-SATELLITE (Earth-to-space)
US64
US384
ITU Region 1 Allocations
401
-
402
MHz
METEOROLOGICAL AIDS
SPACE OPERATION (space-to-Earth)
EARTH EXPLORATION-SATELLITE (Earth-to-space)
METEOROLOGICAL-SATELLITE (Earth-to-space)
Fixed
Mobile except aeronautical mobile
ITU Region 2 Allocations
401
-
402
MHz
METEOROLOGICAL AIDS
SPACE OPERATION (space-to-Earth)
EARTH EXPLORATION-SATELLITE (Earth-to-space)
METEOROLOGICAL-SATELLITE (Earth-to-space)
Fixed
Mobile except aeronautical mobile
ITU Region 3 Allocations
401
-
402
MHz
METEOROLOGICAL AIDS
SPACE OPERATION (space-to-Earth)
EARTH EXPLORATION-SATELLITE (Earth-to-space)
METEOROLOGICAL-SATELLITE (Earth-to-space)
Fixed
Mobile except aeronautical mobile
SpectrumWiki
2019 World Radiocommunication Conference (WRC-19) Agenda Item 1.2
WRC-19 Agenda Item 1.2
More...
Footnotes
Could not find US64
US70
The meteorological aids service allocation in the band 400.15-406.0 MHz does not preclude the operation therein of associated ground transmitters.
US384
In the band 401-403 MHz, the non-Federal Earth exploration-satellite (Earth-to-space) and meteorological-satellite (Earth-to-space) services are limited to earth stations transmitting to Federal space stations.
SpectrumWiki
2019 World Radiocommunication Conference (WRC-19) Agenda Item 1.2
1.2 to consider in-band power limits for earth stations operating in the mobile-satellite service, meteorological-satellite service and Earth exploration-satellite service in the frequency bands 401-403 MHz and 399.9-400.05 MHz, in accordance with Resolution 765 [COM6/7] (WRC-15);
Frequency Bands
Band
Use
Service
Table
399.9
-
400.05
MHz
WRC-19 Agenda Item 1.2
-
-
401
-
403
MHz
WRC-19 Agenda Item 1.2
-
-
External Links:
WRC-19 (International Telecommunication Union)
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WRC-19 Agenda Item 1.2
"to consider in-band power limits for earth stations operating in the mobile-satellite service, meteorological-satellite service and Earth exploration-satellite service in the frequency bands 401-403 MHz and 399.9-400.05 MHz, in accordance with Resolution COM6/7 (WRC 15)"
Frequency Bands
Band
Use
Service
Table
399.9
-
400.05
MHz
WRC-19 Agenda Item 1.2
-
-
401
-
403
MHz
WRC-19 Agenda Item 1.2
-
-
Display this entry in a page by itself
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Related Documents, Links, and Multimedia:
Occupancy Measurements (10)
Shared Spectrum Company General Survey of Radio Frequency Bands (30 MHz to 3 GHz): Vienna, Virginia, September 1-5, 2009
Frequencies/Bands
30
-
3000
MHz
Document type and status:
Occupancy measurements (Current)
Document date or date of hyperlink query:
March 30, 2012
Shared Spectrum Company General Survey of Radio Frequency Bands (30 MHz to 3 GHz): Vienna, Virginia, September 1-5, 2009
Edit...
Shared Spectrum Company Spectrum Occupancy Measurements: Loring Commerce Centre, Limestone, Maine, September 18-20, 2007
Frequencies/Bands
30
-
3000
MHz
Document type and status:
Occupancy measurements (Current)
Document date or date of hyperlink query:
March 30, 2012
Shared Spectrum Company Spectrum Occupancy Measurements: Loring Commerce Centre, Limestone, Maine, September 18-20, 2007
Edit...
Shared Spectrum Company Spectrum Occupancy Measurements: Dublin, Ireland, April 16-18, 2007
Frequencies/Bands
30
-
3000
MHz
Document type and status:
Occupancy measurements (Current)
Document date or date of hyperlink query:
March 30, 2012
Shared Spectrum Company Spectrum Occupancy Measurements: Dublin, Ireland, April 16-18, 2007
Edit...
Shared Spectrum Company Spectrum Occupancy Measurements: Chicago, Illinois, November 16-18, 2005
Frequencies/Bands
30
-
2900
MHz
Document type and status:
Occupancy measurements (Current)
Document date or date of hyperlink query:
March 30, 2012
Shared Spectrum Company Spectrum Occupancy Measurements: Chicago, Illinois, November 16-18, 2005
Edit...
Shared Spectrum Company Spectrum Occupancy Measurements: Riverbend Park, Great Falls, Virginia, April 7, 2004
Frequencies/Bands
30
-
3000
MHz
Document type and status:
Occupancy measurements (Current)
Document date or date of hyperlink query:
March 30, 2012
Shared Spectrum Company Spectrum Occupancy Measurements: Riverbend Park, Great Falls, Virginia, April 7, 2004
Edit...
Shared Spectrum Company Spectrum Occupancy Measurements: Tyson’s Square Center, Vienna, Virginia, April 9, 2004
Frequencies/Bands
30
-
3000
MHz
Document type and status:
Occupancy measurements (Current)
Document date or date of hyperlink query:
March 30, 2012
Shared Spectrum Company Spectrum Occupancy Measurements: Tyson’s Square Center, Vienna, Virginia, April 9, 2004
Edit...
Shared Spectrum Company Spectrum Occupancy Measurements: National Science Foundation Building Roof, April 16, 2004
Frequencies/Bands
30
-
3000
MHz
Document type and status:
Occupancy measurements (Current)
Document date or date of hyperlink query:
March 30, 2012
Shared Spectrum Company Spectrum Occupancy Measurements: National Science Foundation Building Roof, April 16, 2004
Edit...
Shared Spectrum Company Spectrum Occupancy Measurements: Republican National Convention, New York City, New York, August 30 – September 3, 2004
Frequencies/Bands
30
-
3000
MHz
Document type and status:
Occupancy measurements (Current)
Document date or date of hyperlink query:
March 30, 2012
Shared Spectrum Company Spectrum Occupancy Measurements: Republican National Convention, New York City, New York, August 30 – September 3, 2004
Edit...
Shared Spectrum Company Spectrum Occupancy Measurements: National Radio Astronomy Observatory (NRAO), October 10-11, 2004
Frequencies/Bands
30
-
3000
MHz
Document type and status:
Occupancy measurements (Current)
Document date or date of hyperlink query:
March 30, 2012
Shared Spectrum Company Spectrum Occupancy Measurements: National Radio Astronomy Observatory (NRAO), October 10-11, 2004
Edit...
Shared Spectrum Company Spectrum Occupancy Measurements: Shared Spectrum Building Roof, Vienna, Virginia, December 15-16, 2004
Frequencies/Bands
30
-
3000
MHz
Document type and status:
Occupancy measurements (Current)
Document date or date of hyperlink query:
March 30, 2012
Shared Spectrum Company Spectrum Occupancy Measurements: Shared Spectrum Building Roof, Vienna, Virginia, December 15-16, 2004
Edit...
Engineering Data
Lower Frequency
Center Frequency
Upper Frequency
Frequency
401 MHz
401.5 MHz
402 MHz
Wavelength
74.8 cm
74.7 cm
74.6 cm
Band designator(s)
UHF
UHF
UHF
Isotropic collecting area
444.8 cm
2
443.7 cm
2
442.6 cm
2
Free space loss (1 m)
24.5 dB
24.5 dB
24.5 dB
Free space loss (1 km)
84.5 dB
84.5 dB
84.5 dB
Free space loss (10 km)
104.5 dB
104.5 dB
104.5 dB
Free space loss (100 km)
124.5 dB
124.5 dB
124.5 dB
Free space loss (1000 km)
144.5 dB
144.5 dB
144.5 dB
Free space loss
(35,786 km = GEO orbit)
175.6 dB
175.6 dB
175.6 dB
Free space loss (378,370 km = Moon)
196.1 dB
196.1 dB
196.1 dB