Question

A transmitting antenna at the top of a tower has a height 32 m and the height of the receiving antenna is 50 m. What is the maximum distance between them for satisfactory communication in LOS mode? Given radius of earth 6.4xx10^(6)m.

Answer 1

Answer:

18 metres is the maximum distance.

Answer 2

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• ${dm}$=$\sqrt{2RhT}$$\sqrt{2RhR}$
• ${dm}$=$\sqrt{2×64×10^5×32}$+$\sqrt{2×64×10^5×50m}$
• ${=64×10^2}$$\sqrt{10}$${+8×10^3}$×$\sqrt{10}$
• ${144×10^2}$×$\sqrt{10}m[\tex]= [tex]{45.5km}$