Sun Outage / Sun Interference Prediction for Geostationary Orbit Satellites
Updated 07 March 2018
More calculators at 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
Max C/N degradation:dB
Sun outage predictions based on:Antenna 3dB beam widthC/N degradation below link margin
Search Address:

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.