Broadcast transmitters are devices that send out radio or television signals over the air. They convert audio and video signals into electromagnetic waves, which can travel long distances. These transmitters are essential for delivering content to radios and TVs, allowing people to access news, music, and entertainment. The power and frequency of a broadcast transmitter determine how far its signals can reach. AM and FM transmitters are commonly used for radio, while UHF and VHF transmitters are used for television. Proper maintenance and regulation ensure that these transmitters operate efficiently and comply with communication standards.