*Question G1C04:
[97.303(i)] Which of the following is required by the FCC rules when operating in the 60-meter band?*  

*Correct Answer is  A: If you are using an antenna other than a dipole, you must keep a record of the gain of your antenna*  

### AI Response: (may contain errors)  

In the 60-meter band, the FCC has specific requirements to ensure that operators do not exceed the allowed Effective Radiated Power (ERP). Here's why the correct answer is correct and why the other choices are incorrect:

1. **Correct Answer: A**  
   - **Explanation**: The FCC rules for the 60-meter band specify that if you are using an antenna other than a dipole, you must keep a record of the antenna's gain. This is because the ERP limit for the 60-meter band is 100 watts PEP (Peak Envelope Power) relative to a dipole. Knowing the gain of your antenna is essential to ensure compliance with this ERP limit.

2. **Why the Other Choices are Incorrect**:
   - **B: You must keep a record of the date, time, frequency, power level, and stations worked**  
     - This is not a specific requirement for the 60-meter band. While logging can be good practice, it is not mandated by the FCC for this band.
   - **C: You must keep a record of all third-party traffic**  
     - There is no specific requirement to keep a record of third-party traffic for the 60-meter band. Third-party traffic rules apply more generally and are not specific to this band.
   - **D: You must keep a record of the manufacturer of your equipment and the antenna used**  
     - The FCC does not require operators to keep records of equipment manufacturers or antenna types for the 60-meter band.

3. **Useful Formula**:
   - To calculate ERP when using an antenna with gain, use the formula:  
     $$ ERP = P_T \times G_A $$
     where:
     - $P_T$ = transmitter power in watts
     - $G_A$ = antenna gain (linear, not in dB)

   - For a dipole, the gain is typically considered to be 1 (or 0 dB), so the ERP is simply the transmitter power. For other antennas, knowing the gain is crucial to ensure the ERP does not exceed the 100 watts PEP limit.