Saved Bookmarks
| 1. |
Why do we require a satellite for long distance T.V. transmission? |
|
Answer» The T. V. signal are of high frequency range 54 MHz to 890 MHz. They can not be reflected by ionosphere and their ground wave propagation is possible up to a limited distance due to heavily energy absorption while moving along the surface of earth. therefore, the propagation of T.V. signal is not possible by either sky waves or ground waves. The T.V. signal can be transmitted over a long distance through satellite communication. In satellite communication the transponder fitted in satellite receives the T.V. signals amplifies it and returns it towards the ground with different frequency waves. |
|