Considering the modem technology, Modems communicate data by using Radio frequency method.
What is Radio frequency method?
The radio frequency method in modem communication allows modems to communicate or transfer data through wireless over a distance of tens of kilometers.
The essence of Radio frequency in modems
With radio frequency, modems can easily communicate without telecommunication or satellite network operators. It usually performs at 300 MHz to 900 MHz range.
Hence, in this case, it is concluded that the correct answer is the Radio frequency method.
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