*Question G1E08:
[97.313(j)] What is the maximum PEP output allowed for spread spectrum transmissions?*  

*Correct Answer is  B: 10 watts*  

### AI Response: (may contain errors)  

For spread spectrum transmissions, the maximum peak envelope power (PEP) output allowed is 10 watts. This is specified in the FCC rules under Part 97, which governs amateur radio operations.

1. **Why the correct answer is correct:**
   - The correct answer is **B: 10 watts**. According to FCC regulation 97.313(j), the maximum PEP output for spread spectrum emissions is limited to 10 watts. This limitation is in place to minimize interference with other communications and ensure efficient use of the radio spectrum.

2. **Why the other choices are incorrect:**
   - **A: 100 milliwatts**: This is too low compared to the allowed maximum of 10 watts. While some low-power operations might use 100 milliwatts, it is not the maximum allowed for spread spectrum.
   - **C: 100 watts**: This exceeds the 10-watt limit set by the FCC for spread spectrum transmissions. Using 100 watts would violate the regulations.
   - **D: 1500 watts**: This is the maximum PEP output allowed for most amateur radio transmissions, but it is not applicable to spread spectrum, which is specifically limited to 10 watts.

3. **Useful rules of thumb:**
   - Remember that spread spectrum techniques, such as frequency hopping or direct sequence, are designed to spread the signal over a wider bandwidth. This can help reduce interference and improve security, but it also requires adherence to stricter power limits to prevent interference with other users.
   - Always check the specific FCC regulations for different modes of operation, as power limits can vary significantly depending on the mode and frequency band.