*Question E1D09:
[97.207] Which UHF amateur bands have frequencies authorized for space stations?*  

*Correct Answer is  B: 70 centimeters and 13 centimeters*  

### AI Response: (may contain errors)  

The correct answer to the question about which UHF amateur bands have frequencies authorized for space stations is:

**B: 70 centimeters and 13 centimeters**

### Explanation:

1. **Why the correct answer is correct:**
   - The 70 centimeters band (430-440 MHz) and the 13 centimeters band (2.4-2.45 GHz) are both authorized for use by amateur radio operators for communication with space stations. These bands are commonly used for satellite communications, including those involving amateur radio satellites and space stations like the International Space Station (ISS).

2. **Why the other choices are incorrect:**
   - **A: 70 centimeters only**  
     - This choice is incorrect because it omits the 13 centimeters band, which is also authorized for space station communications.
   - **C: 70 centimeters and 33 centimeters**  
     - This choice is incorrect because the 33 centimeters band (902-928 MHz) is not typically used for space station communications.
   - **D: 33 centimeters and 13 centimeters**  
     - This choice is incorrect because, while the 13 centimeters band is authorized, the 33 centimeters band is not used for space station communications.

### Useful Rules of Thumb:
- **Amateur Satellite Frequencies:**  
  - Familiarize yourself with the frequency allocations for amateur radio, especially those used for satellite communications. The 70 cm and 13 cm bands are key for this purpose.
- **Band Plans:**  
  - Review the band plans published by the American Radio Relay League (ARRL) or your local amateur radio organization to understand which frequencies are allocated for specific uses, including space communications.

By understanding these allocations, you can better prepare for questions related to amateur radio frequencies and their applications.