*Question E1D06:
[97.215(c)] What is the maximum permitted transmitter output power when operating a model craft by telecommand?*  

*Correct Answer is  A: 1 watt*  

### AI Response: (may contain errors)  

When operating a model craft by telecommand, the FCC rules specify certain limitations on transmitter output power to ensure safe and interference-free operation. According to FCC regulation 97.215(c), the maximum permitted transmitter output power for this type of operation is 1 watt.

### Explanation:

1. **Correct Answer: 1 watt (Choice A)**
   - The FCC regulation 97.215(c) specifically limits the transmitter output power to 1 watt when controlling a model craft by telecommand. This is to minimize interference with other radio services and ensure safe operation within the designated frequency bands.

2. **Why Other Choices Are Incorrect:**
   - **2 watts (Choice B):** This exceeds the FCC's specified limit of 1 watt for telecommand operations, making it non-compliant with the regulation.
   - **5 watts (Choice C):** This is significantly higher than the allowed 1 watt, which could lead to interference and is not permitted under the current rules.
   - **100 watts (Choice D):** This is far beyond the permissible limit and would likely cause substantial interference with other radio services, violating FCC regulations.

### Key Rule:
- **FCC Regulation 97.215(c):** Limits the transmitter output power to 1 watt for telecommand of model crafts to ensure compliance and prevent interference.

Understanding these power limitations is crucial for operating within legal boundaries and maintaining the integrity of the amateur radio spectrum.