0 votes
357 views
in Communication Systems by (27.4k points)
closed by

The height of a transmitting antenna is 200 m. Radius of earth is 6.4 × 106 m

1. Which one of the following is used in TV transmission?

  • Sky wave
  • Space wave
  • Ground wave
  • None of these

2. Find the range up to which the above antenna gives transmission signal.

3. Why is it necessary to use satellite for long distance transmission?

1 Answer

+1 vote
by (27.0k points)
selected by
 
Best answer

1. Space wave

2. dm = \(\sqrt{2Rh}\)

d\(\sqrt{2\times6.4\times10^6\times200}m\)

3. Space waves can not be reflected back by iono sphere. Space wave can be reflected back to earth by making use of artificial satellite.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

...