*Question G2B08:
What is the voluntary band plan restriction for US stations transmitting within the 48 contiguous states in the 50.1 MHz to 50.125 MHz band segment?*  

*Correct Answer is  A: Only contacts with stations not within the 48 contiguous states*  

### AI Response: (may contain errors)  

In the 6-meter band, specifically the 50.1 MHz to 50.125 MHz segment, there is a voluntary band plan restriction for US stations operating within the 48 contiguous states. This restriction is designed to facilitate long-distance communication, often referred to as "DX" contacts.

1. **Correct Answer Explanation (A):**  
   - The correct answer is that only contacts with stations not within the 48 contiguous states are allowed. This segment is reserved for DX contacts to encourage and facilitate communication with stations outside the contiguous United States, such as those in Alaska, Hawaii, or other countries.

2. **Why Other Choices Are Incorrect:**
   - **B: Only contacts with other stations within the 48 contiguous states**  
     This is incorrect because the purpose of this band segment is to promote DX contacts, not local or regional communication within the contiguous states.
   - **C: Only digital contacts**  
     This is incorrect because the restriction is not based on the mode of communication (e.g., digital, voice, etc.) but rather on the geographic location of the stations involved.
   - **D: Only SSTV contacts**  
     This is incorrect for the same reason as choice C. The restriction is not mode-specific but is instead focused on enabling long-distance contacts.

3. **Useful Rules of Thumb:**
   - The 50.1 MHz to 50.125 MHz segment is often referred to as the "DX window" on the 6-meter band.
   - Voluntary band plans are not legally binding but are widely respected to ensure efficient use of the spectrum and to minimize interference.

Understanding these voluntary band plan restrictions helps ensure that operators use the spectrum efficiently and respect the established norms for different band segments.