A television antenna is a device that receives broadcast signals from television stations. It converts these signals into audio and video, allowing viewers to watch their favorite shows without needing a cable subscription. Antennas can be indoor or outdoor, with outdoor antennas typically providing better reception due to their height and exposure. There are different types of antennas, including dipole antennas and Yagi-Uda antennas, each designed for specific reception needs. The choice of antenna depends on factors like distance from broadcast towers and the surrounding environment. Proper installation and positioning can significantly improve signal quality and viewing experience.