Cellular transmitters are devices that send and receive signals for mobile communication. They are part of a network that allows cell phones and other mobile devices to connect to the internet and make calls. These transmitters convert voice and data into radio waves, which are then transmitted over distances to connect users. Typically located on towers or buildings, cellular transmitters work in conjunction with cellular networks to provide coverage across various areas. They operate on different frequency bands, enabling multiple users to communicate simultaneously without interference. This technology is essential for modern communication, supporting services like text messaging and mobile internet.