There are numerous private networks working to establish a national reach and compete against state television. One of the primary challenges for these networks is to develop and maintain a broadcast infrastructure to reach the largest possible audience.
Most networks rely primarily on satellite transmission to affiliated local stations.
The competition for local affiliations has become quite heated. The growth of networks has given local stations a wide range of new programming sources. Local stations also benefit from competition between networks. Many local stations take programming from more than one network.