Radio 101: Why AM stations reduce power at night
It''s a question we hear often from listeners who don''t receive as clear a signal after sunset as they do during the day. But what most listeners don''t know is that this is a result of
Base station power refers to the output power level of base stations, which is defined by specific maximum limits (24 dBm for Local Area base stations and 20 dBm for Home base stations) and includes tolerances for deviation from declared power levels, as well as specifications for total power control dynamic range. How useful is this definition?
Maximum base station power is limited to 38 dBm output power for Medium-Range base stations, 24 dBm output power for Local Area base stations, and to 20 dBm for Home base stations. This power is defined per antenna and carrier, except for home base stations, where the power over all antennas (up to four) is counted.
Depending on the size of base station and its traffic, the base station may also have another sources of power such as a diesel generator, wind turbine or biofuels. The base station is a transceiver and acts as an interface between a mobile station and network using microwave radio communication.
Base station antennas direct the radio signals away from the building or mast to obtain coverage in a certain area. The intensity of the radio waves is drastically reduced as the distance increases from the base station antenna.
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