Question
What is the maximum PEP output allowed for spread spectrum transmissions?
Answer Options
- A) 100 milliwatts
- B) 10 watts
- C) 100 watts
- D) 1500 watts
Correct Answer: B
Explanation
Spread spectrum (SS) transmissions, which utilize a bandwidth much wider than the information rate, are permitted in the amateur service but are subject to a strict power limit. FCC Rule \S 97.313(\text{j}) sets the maximum peak envelope power (PEP) output for SS transmissions at 10 watts.
This low power limit is imposed because SS emissions occupy a large portion of the spectrum, and restricting the power helps to prevent widespread interference to other amateur stations operating on different modes within that bandwidth. The rule requires that the SS emission must be confined to the band for which it is authorized.
This topic was automatically created to facilitate community discussion about this exam question. Feel free to share study tips, memory tricks, or additional explanations!