In wave propagation, determine the refractive index of an ionospheric layer with 100 x 106 free electrons per cubic meter at 5 MHz frequency. Calculate the electric field intensity in millivolts per meter at 30kW from a 5 miles source. What is the angle of incidence of the radio wave signal as it moves from air to glass, if the angle of refraction is 8.2o? Dielectric constant for glass is 7.8. What is the free space path loss in dB between two microwave parabolic antennas 38.0 kilometer apart operating at 7.0 GHz? 6. Determine the power density at a distance of 100 meters. The total power delivered to the radiator of an isotropic antenna is 200,000 W. If the critical frequency is 10 MHz in sky wave propagation, what is the best frequency to use assuming 300 of radiation angle? 4. At a certain time, the MUF for transmissions at an angle of incidence of 75 o is 17MHz. How far away is the radio horizon if an antenna 500 ft high? 2. 30 Solved Problems on Wave Propagation 1.
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