Final answer:
A lower portable radio that communicates through a series of interconnected repeater stations is called a cellular system. Cell phones use these systems to transmit and receive signals, connecting to the nearest cell tower and smoothly transitioning between towers when mobile. This technology allows for continuous communication over long distances.
Step-by-step explanation:
The term for a lower portable radio that communicates through an interconnected series of repeater stations is called a cellular radio system. Cell phones are equipped with radio receivers and transmitters that can tune to various microwave frequencies.
The signal of a cell phone is deliberately limited in range, to ensure it only connects to the broadcast tower within the current cell. As a user moves, the phone 'hands off' the connection to the next tower with a stronger signal, allowing continuous communication.
Technological improvements have allowed for not only cellular communication but also advanced wireless technologies such as microwave transmission, Wi-Fi, and satellite communications. Unlike other options like Bluetooth, Wi-Fi, and satellite, cellular systems are designed for seamless transition between coverage areas, which is ideal for maintaining communication while traveling.