Why does the signal is cut off when it’s raining?

For Signal transmission in the Dstv system or satellite, the signal will be sent from the surface of the earth to a satellite orbiting at roughly 35,768 meters.  The signal then will be transmitted to the customers dish on 12 - 14 GHz that are the frequencies standardized by (ITU - International Telecommunication Union) and used worldwide.  These frequencies are naturally magnetic field meaning the strength can be reduced by rain drops and/or dense cloud. 

Resulting in the signal being lost during heavy rain, the period of the signal lost depends on the amount of rain and the density of the cloud. When the rain or density of cloud reduce, the signal will automatically resume normal condition.

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