Launch of first public radio transmitter in Iran as Radio Tehran, Ordibehesht 4. On this date, Iran’s first public radio transmitter began operating under the name Radio Tehran, making audio broadcasting accessible to the general public. This event marked a turning point in the history of mass media in Iran and played a significant role in expanding communication and information dissemination. The establishment of Radio Tehran enabled wider access to news, music, and cultural programming for people across the country. This development paved the way for the growth of audio media and the advancement of listening culture in Iran, having a notable impact on daily life and public awareness.