4. A microwave system requires the use of repeaters when :
(a) the intervening terrain is favorable (b) the distances involve are grater (c) the required reliability is meet (d) the radio fading is unacceptable
Answer
Answer : (b)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Microwave Communication Systems » Exercise - 1 12. The normal fade margin in a line-of-sight microwave system is : (a) 10 db (b) 25 db (c) 40 db (d) 60 db
Introduction to Microwave » Exercise - 1 12. The wavelength for microwave frequencies are : (a) More than 1 m (b) Less than 1 mm (c) From 1 mm to 1 m (d) 0.3 to 300 m
Microwave Communication Systems » Exercise - 1 10. Which of the following antenna is best excited from a waveguide : (a) Horn (b) Discone (c) Helical (d) Biconical