*Question G1B09:
[97.203(d)] On what HF frequencies are automatically controlled beacons permitted?*  

*Correct Answer is  D: 28.20 MHz to 28.30 MHz*  

### AI Response: (may contain errors)  

To determine the permitted HF frequencies for automatically controlled beacons, we refer to the regulations set forth by the FCC. The correct answer is:

**Correct Answer: D: 28.20 MHz to 28.30 MHz**

### Explanation of the Correct Answer:
- **Regulatory Basis**: The FCC allows automatically controlled beacons to operate in the 10-meter band, specifically between 28.20 MHz and 28.30 MHz. This is a designated frequency range for such operations, ensuring that they do not interfere with other communications.

### Why the Other Choices are Incorrect:
- **A: On any frequency if power is less than 1 watt**  
  - This is incorrect because there are specific frequency allocations for automatically controlled beacons, and they cannot operate on just any frequency, regardless of power level.

- **B: On any frequency if transmissions are in Morse code**  
  - This is also incorrect. While Morse code is a valid mode of transmission, it does not grant permission to operate on any frequency. The same frequency restrictions apply regardless of the mode used.

- **C: 21.08 MHz to 21.09 MHz**  
  - This choice is incorrect as it does not fall within the designated frequency range for automatically controlled beacons. The 15-meter band (21 MHz) does not permit such beacons.

### Summary:
- Automatically controlled beacons are specifically allowed to operate in the frequency range of 28.20 MHz to 28.30 MHz.
- Always refer to the latest FCC regulations for the most accurate and up-to-date information regarding frequency allocations and operational rules.