*Question G2D09:
Which of the following is required when participating in a contest on HF frequencies?*  

*Correct Answer is  C: Identify your station according to normal FCC regulations*  

### AI Response: (may contain errors)  

When participating in a contest on HF frequencies, it is essential to follow all standard operating procedures, including proper station identification. Here's why the correct answer is correct and why the other choices are not:

1. **Correct Answer: C: Identify your station according to normal FCC regulations**
   - **Explanation**: The Federal Communications Commission (FCC) requires that all amateur radio operators identify their station with their call sign at the end of a communication and at least every 10 minutes during a communication. This rule applies at all times, including during contests. Proper identification ensures compliance with FCC regulations and helps maintain orderly communication on the bands.

2. **Why the Other Choices are Incorrect**:
   - **A: Submit a log to the contest sponsor**: While submitting a log is often encouraged and necessary to officially participate in a contest, it is not a requirement for simply operating during the contest. You can participate informally without submitting a log.
   - **B: Send a QSL card to the stations worked, or QSL via Logbook of The World**: Sending QSL cards or confirming contacts via Logbook of The World is a common practice for confirming contacts, but it is not a requirement for contest participation. It is a courtesy and a personal choice.
   - **D: All these choices are correct**: Since options A and B are not required for contest participation, this choice is incorrect.

In summary, the key requirement during a contest is to ensure that you are identifying your station according to FCC regulations, which is why option C is the correct answer.