How do base stations function?
A base station provides radio coverage to people using cell phones in its specific surrounding geographical area. The base station houses a sensitive receiver and low power transmitter and is merely one of many that are required to provide cellular telephony in an extended area. The transmitter inside the base station produces a radio signal at a frequency of about 900 MHz and at an average output power of 20 Watts. The antenna’s function is to focus the radio waves in a particular direction (generally away from the supporting structure). Independent measurements at ground level show that the radio transmissions near base stations are typically many hundreds of times below the international guidelines set for RF safety.
