Sun Outage / Sun Interference Prediction for Geostationary Orbit Satellites
Updated 07 March 2018
More calculators at https://www.satellite-calculations.com- Jens T. Sætre

It is also recommended to try out the Sun Outage Visualizer Tool for Geostationary Satellites which can plot affected area in near real time



Satellite position:
CkuUser Band(GHz) Antenna Size(Meters)Antenna Size(Feet)Antenna Size(Inches)Antenna Efficiency
SeasonSpringFall Year(YYYY)

Antenna Noise Temp°K
Waveguide/feed lossdB
LNB Noise Temp°K
LNB Noise FiguredB
System Noise Temperature°K
Polarization:CircularLinear
Max C/N degradation:dB
Sun outage predictions based on:Antenna 3dB beam widthC/N degradation below link margin
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NOTE ! Local time is based on computer local time zone and daylight savings settings
NOTE: Inclination not accounted for
C/N calculations from ITU-R S.1525-1 & ITU-R BO.1506 simplified model
Be aware that the C/N calculations does not match ITU-R S.1525-1 & ITU-R BO.1506 100% with current implementation.
Also the radiation intensity from the Sun can be different from the average value used in the ITU papers
C/N reduction is less accurate for Ku antennas above 1.8m

ITU-R BO.1213 and ITU-R BO.1900 is used as reference antanna patterns
This patterns does not apply for C-band but due to the lack of C-band reference pattern the ITU-R BO.1213 is also used as pattern for C-band.