When the incoming jet loses power to its radios the pilots then use their cell phones to contact the tower. However, cell phones do NOT work in airliners cruising at altitude. Even if they are very low the speed of the jet means that the cell phone can not connect because it will be passing through the individual cell towers so quickly that they will not even have time for the electronic "handshake" that is required to pass the cellphone signal from one tower to the next. Also the aluminum aircraft acts as a Faraday shield so any cell phone signal would be greatly attenuated.
The only way cell phones can work is in some of the newer airliners when the airplane itself essentially has a "cell tower" which can then relay the signals to a satellite and then to the ground.
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05/03/2025 alle ore 08:37
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