datacommunication line-of-sight communication if the distance is 30 km, the used frequency is 3 GHz and send Signal power is 2000 w, what will be de received signal power and free space loss in dB? Assume that signal is transmitted in light speed.

a.What is the attenuation of 350 ft of RG-11 U coaxial cable at 100 MHz?b. A transmitter has an output power of 3 W that is fed to an antenna through an RG58A/U cable 20 ft long. How much power reaches the antenna?c. Two engineers have a disagreement over the selection of transmission line for connections within a 100m Data Centre on a project that is at risk for cost overrun. The first engineer is arguing in favor of using multi-mode fibre while the second engineer would like to use single mode fibre. You are the project engineer. Decide which of the two transmission lines to use and justify your answer.d. For typical silica optical fibres with ncore = 1.45 and Δ = 5 x 10-3, calculate nclad and NAe. For a typical silica fibre with D (@ λ = 1.3μm) = 2.5 nm ps/km and a semiconductor laser source centred on λ = 1.3μm with Δλ = 4nm: the bandwidth length BL ≈ 100 Gbps km (singlemode, step-index). What transmission speed is possible at a distance of 5km?f. A link from point a to point b is…

please solve all options a,b,c and d step by step... thank you

A satellite at an altitude of 37654 km transmits a signal of 17 GHz to a ground station directly below it. The following data is given. • Total atmospheric losses = 40dB • Transmit antenna gain = 55dBi • Receiver antenna gain = 60dBi • Signal to noise ratio of received signal = 6dB • Receiver signal noise power = 25pW • Receiver sensitivity = -90dBW I. Calculate the power transmitted. II. Find the Fade Margin for the link and comment on your result.