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Welcome to eGyanKosh, your comprehensive resource for academic excellence! In this section, we present Unit-1: வானொலி: ஒரு ஒலி ஊடகம், a crucial module within the IGNOU curriculum for 2025. This study material delves into the fascinating world of radio as a powerful medium of communication. Whether you are a student preparing for exams, a researcher, or simply curious about the dynamics of radio broadcasting, you will find valuable insights and knowledge here. Best of all, this material is available for free download, ensuring that quality education is accessible to everyone. Explore the depths of radio studies and enhance your understanding of this influential medium!