(Answered) Suppose a transmitter antenna transmits power at 0 db unity

Engineering

Suppose a transmitter antenna transmits power at 0 db (unity output, i.e., 1W). An identical receiver antenna is used for reception at a distance of 1km. assuming half the power transmitted is lost due to propagation in the atmosphere, calculate the maximum directivity of each antenna for a reception level of -120 db. Propagation is at a wavelength of 1m.

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