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Please help me with this.... Why a radio station can be broadcast to a whole city from a single antenna, whereas a mobile phone system needs a network of basestations???
Thanks,,,
Thanks,,,
What is the context for your question? Is this a question you were asked in school? What grade level are you in school now?Please help me with this.... Why a radio station can be broadcast to a whole city from a single antenna, whereas a mobile phone system needs a network of basestations???
Thanks,,,
TBH I'm not sure on the radiated power from a radio station, however mobile vehicle radios have a maximum radiated power of 50 watts, only if licensed, Canadian FCC regulations has a baseline radiated power of 25 watts. For the portable 2 way radios the radiated power is 5 to 10 watts. Lower frequencies can travel farther, such as AM radio, however their penetration is lower. Higher frequency ranges has better penetration.The power a radio station is able to broadcast is often measured in kilowatts. (50,000 watt AM superstations, anyone?) Radio stations can broadcast to more than a whole city. AM Superstations can cover half the continental US, if the conditions are right.
The power in a mobile phone handset? Maybe a few watts tops, which limits the range of the signal. Because of the short range of the mobile signal, a chain of signal towers is required to pick up the signal, feed it into the phone network, and then broadcast to the receiver phone. When traveling and you lose your cell phone signal, it's because there is a big obstacle in the way, like a mountain, or you are no longer close to a cell tower.
A list of the 50,000 watt stations in the US:TBH I'm not sure on the radiated power from a radio station, however mobile vehicle radios have a maximum radiated power of 50 watts, only if licensed, Canadian FCC regulations has a baseline radiated power of 25 watts. For the portable 2 way radios the radiated power is 5 to 10 watts. Lower frequencies can travel farther, such as AM radio, however their penetration is lower. Higher frequency ranges has better penetration.
Some cell phones have a frequency range of 900 MHz to 1.2 ghz if memory serves me correct.