Advantages Of Geostationary Satellites:

1. This satellite remains almost stationary in respect to a given earth station. Consequently expensive tracking equipment is not required at earth stations.
2. High altitude geosynchronous satellites can cover a much larger area of the earth than their LEO satellite counterpart.
3. There is no need to switch from one satellite to another as they orbit overhead. Consequently there are no breaks in transmission because of switching times.
4. The effects of Doppler shift are negligible.