Which types of communication systems commonly utilize towers?

Cellular, broadcast, and microwave communication systems commonly utilize towers due to their need for extensive coverage and line of sight for effective signal transmission.

Cellular systems rely on a network of towers to ensure mobile phones can connect to the network at various locations. These towers help maintain a strong and reliable connection while allowing for the mobility of users within their service area.

Broadcast communication systems, including television and radio, use towers to transmit signals over large distances, enabling the signal to reach as many receivers as possible. The height and structure of these towers greatly enhance their ability to disseminate signals across broad landscapes.

Microwave communication systems also employ towers for point-to-point communication links. Microwaves require unobstructed line-of-sight paths between the transmitting and receiving equipment, making the elevation provided by towers crucial for functionality.

The other options provided don't align with common practices in communication systems. Wi-Fi and satellite navigation systems typically do not rely on towers in the same way; Wi-Fi operates within a limited range through routers, while satellite navigation systems primarily depend on satellites rather than terrestrial towers. Landline systems use physical cables instead of towers, and public address and intercom systems are designed for localized communication rather than extensive coverage like the aforementioned systems.