*Question G0A03:
[97.13(c)(1)] How can you determine that your station complies with FCC RF exposure regulations?*  

*Correct Answer is  D: All these choices are correct*  

### AI Response: (may contain errors)  

To determine if your station complies with FCC RF exposure regulations, the correct answer is:

**D: All these choices are correct.**

### Explanation:

1. **Why the correct answer is correct:**
   - Compliance with FCC RF exposure regulations can be established through multiple methods:
     - **Calculation based on FCC OET Bulletin 65:** This bulletin provides guidelines for evaluating RF exposure and allows you to calculate exposure levels based on your station's parameters.
     - **Calculation based on computer modeling:** Software tools can simulate RF exposure scenarios, helping to predict compliance without physical measurements.
     - **Measurement of field strength using calibrated equipment:** Direct measurements of RF field strength can be taken to assess exposure levels in real-world conditions.

   Since all these methods are valid for determining compliance, the answer is indeed "All these choices are correct."

2. **Why the other choices are incorrect:**
   - **A: By calculation based on FCC OET Bulletin 65:** While this method is valid, it is only one of the ways to determine compliance, not the only method.
   - **B: By calculation based on computer modeling:** Similar to choice A, this is a valid method but does not encompass all possible approaches to compliance.
   - **C: By measurement of field strength using calibrated equipment:** This is also a valid method, but again, it is just one of several ways to ensure compliance.

3. **Useful formulas or rules of thumb:**
   - The FCC guidelines often refer to the concept of Maximum Permissible Exposure (MPE). The MPE can be calculated using the formula:
     $$MPE = \frac{P}{A}$$
     where:
     - $P$ = power in watts
     - $A$ = area in square meters (for the specific frequency and distance)

   - For practical compliance, it is essential to consider the frequency of operation and the distance from the antenna, as these factors influence the RF exposure levels.

By understanding these methods and calculations, you can effectively assess your station's compliance with FCC RF exposure regulations.