ObjectiveMcq
Print Protected
This page is protected for print. Use the website to view the content.
Which of the following do not undergo free space propagation?
Correct Answer: B — Wired telephone systems
EM signals when traveling through wireless channels experience fading effects due to various effects. But in some cases the transmission is with no obstruction and direct line of sight such as in satellite communication, microwave and wireless line of sight radio links.