What is cellular technology in a signal tower?
When a call is made on a cellular phone, the signal is transmitted by radio to the nearest antenna tower. Once the antenna site electronically determines that the originating phone is authorized to use its network, the message is then sent by radio -- for cell-to-cell calls -- or telephone line for calls to land lines. Cellular technology divides geographical regions into cells, each with its own radio receiver/antenna. These cells range in size from an individual building to 20 miles wide. When a cell phone customer gets too far away from one antenna, the network senses that the signal is getting weaker and relays the signal to the antenna of a closer cell.
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