*Question G1C09:
[97.313(i)] What is the maximum power limit on the 60-meter band?*  

*Correct Answer is  C: ERP of 100 watts PEP with respect to a dipole*  

### AI Response: (may contain errors)  

The correct answer to the question about the maximum power limit on the 60-meter band is:

**C: ERP of 100 watts PEP with respect to a dipole.**

### Explanation of the Correct Answer:
- The 60-meter band has a specific power limit set by the FCC, which is an Effective Radiated Power (ERP) of 100 watts Peak Envelope Power (PEP) when referenced to a dipole antenna. This means that when you calculate the power output of your station, you must consider the gain of your antenna relative to a dipole.

### Why the Other Choices are Incorrect:
- **A: 1500 watts PEP**  
  This limit applies to other amateur bands, such as the HF bands, but not to the 60-meter band. The 60-meter band has a much lower power limit.

- **B: 10 watts RMS**  
  This is not the correct limit for the 60-meter band. While some bands may have lower limits, the 60-meter band specifically allows for 100 watts ERP.

- **D: ERP of 100 watts PEP with respect to an isotropic antenna**  
  The limit is specifically referenced to a dipole antenna, not an isotropic antenna. An isotropic antenna is a theoretical antenna that radiates equally in all directions, and using it as a reference would yield a different power calculation.

### Useful Formulas and Rules of Thumb:
- **Effective Radiated Power (ERP)** is calculated as:
  $$ERP = P_T \times G_A$$
  where:
  - $P_T$ = transmitter power in watts
  - $G_A$ = antenna gain (linear) relative to a dipole

- Remember that for the 60-meter band, you must always reference your ERP to a dipole antenna to ensure compliance with regulations. 

This understanding will help you correctly answer questions related to power limits on the 60-meter band in the Extra Class exam.