What does the term LOS communication mean ? Name the types of waves that are used for this communication. Which of the two heights of transmitting antenna and height of receiving antenna can affect the range over which this mode of communication remains effective?

What does the term LOS communication mean ? Name the types of waves th

1.	What does the term LOS communication mean ? Name the types of waves that are used for this communication. Which of the two heights of transmitting antenna and height of receiving antenna can affect the range over which this mode of communication remains effective?
Answer» Solution :LOS communication is the line of sight communication. It is that communication in which electormagnetic WAVE travels in straight line from transmitting antenna to receiving antenna. TV frequencies and mocrowave links use this mode of communication. The maximum line of sight distance `d_m` (i.e., range of communication) between transmitting antenna of height `h_(T)` and receiving antenna of height `h_(R)` above the EARTH is given by `d_m = SQRT(2Rh_(T)) + sqrt(2Rh_R)` From this relation, it is clear that `d_m` depends on both, `h_(T)` and `h_(R)`.

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What does the term LOS communication mean ? Name the types of waves that are used for this communication. Which of the two heights of transmitting antenna and height of receiving antenna can affect the range over which this mode of communication remains effective?

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