What is the impact of using excessive effective radiated power on a satellite uplink?

• A. Increased signal clarity
• B. Slow data transmission rates
• C. Blocking access by other users
• D. Improved signal range

Answer: (C)

Using excessive effective radiated power on a satellite uplink can lead to blocking access by other users. When one user transmits at a power level that exceeds what is necessary for effective communication, they can inadvertently interfere with signals from other users who are operating within the same frequency band. This phenomenon is particularly concerning in satellite communication, where multiple users share the same uplink frequency.

When one signal is excessively strong, it can saturate the receiver of the satellite, making it difficult or impossible for the satellite to accurately receive weaker signals from other users. This interference can create a situation where other users are effectively blocked from accessing the satellite, as their signals cannot be properly received or processed. Thus, maintaining appropriate levels of effective radiated power is essential for ensuring fair access and effective communication for all users sharing the satellite link.