Problem
1. Plot and compare the path loss (dB) for the free-space and plane-Earth models at 800 MHz versus distance on a logarithmic scale for distances from lm to 40 km. Assume that the antennas are isotropic and have a height of 10 m.
2. A company owns two office towers in a city and wants to set up a 4-Gliz microwave link between the towers. The two towers have heights of 100 m and 50 zn. respectively, and are separated by 3 km. In the line of sight (LOS) and midway between the two towers is a third tower of height 70 meters. Will line-of-sight transmission be possible between the two towers? Justify your answer. Describe an engineering solution to obtain line-of-sight transmission.