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Why can aircraft transmit hundreds of miles by only operating a very low watt of power radio system?

User Dias
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Answer:

Explanation: The reason why aircraft can transmit hundreds of miles using such a low power radio system is due to the fact that they are equipped with high-gain antennas, which amplify the signal and focus it in a narrow beam towards the receiver. This allows for the signal to travel further while consuming less energy. Additionally, the air itself acts as a natural conductor, allowing the signal to propagate more efficiently through the atmosphere.