Digital Radio and Direct-to-Mobile Technologies Transform Mass Communication; Enable Affordable Entertainment and Education, and Robust Critical Messaging

• Digital Radio and Direct-to-Mobile (D2M) are next-generation broadcast technologies that use terrestrial spectrum to deliver multiple audio/video/data channels over a single frequency, bypassing SIM cards and mobile data.
• D2M creates a one-to-many "data pipe" for affordable entertainment, education, and emergency/disaster alerts directly to handsets.
• UPSC relevance: intersects GS-II (governance, citizen services), GS-III (S&T, disaster management, internal security via alerts) and current-affairs convergence with TRAI's anti-spam DLT (blockchain) framework.