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

Choices:  
A: 1 watt  
B: 2 watts  
C: 5 watts  
D: 100 watts    

Correct Answer is  A: 1 watt  

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FCC Part 97.215(c) sets a special power limit for Amateur Radio telecommand of model craft: the transmitter output power must not exceed 1 watt.

Why the correct answer is correct:
- The rule states: $P_{TX} \le 1\,\text{W}$ when transmitting telecommand signals to a model craft. So 1 watt is the maximum permitted transmitter output power.

Why the other choices are incorrect:
- 2 watts, 5 watts, and 100 watts all exceed the 1 watt maximum set by 97.215(c), so they are not permitted for this specific use.

Useful rules of thumb:
- For model-craft telecommand on the amateur bands: $P_{TX,\text{max}} = 1\,\text{W}$.
- This limit is on transmitter output power (TPO), not ERP/EIRP.
- The 1 W cap is a special case; other amateur operations follow the usual band-specific power limits unless otherwise restricted.

Answer: 1 watt (Choice A).