*Question E2D06:
Which of the following is a method for establishing EME contacts?*  

*Correct Answer is  A: Time-synchronous transmissions alternating between stations*  

### AI Response: (may contain errors)  

To establish Earth-Moon-Earth (EME) contacts, the correct method is:

**Correct Answer: A: Time-synchronous transmissions alternating between stations**

### Explanation of the Correct Answer:
- **Time-synchronous transmissions** are crucial for EME communication because the signals must be coordinated to ensure that both stations are transmitting and receiving at the same time. This synchronization helps to maximize the chances of the signal being reflected off the moon and received by the other station.

### Why the Other Choices are Incorrect:
- **B: Storing and forwarding digital messages**  
  This method is not suitable for EME contacts because EME requires real-time communication. Storing and forwarding is more applicable to packet radio or digital modes where messages can be sent and received at different times.

- **C: Judging optimum transmission times by monitoring beacons reflected from the moon**  
  While monitoring beacons can provide useful information about the propagation conditions, it does not directly establish contacts. EME requires active participation from both stations at the same time, rather than just monitoring.

- **D: High-speed CW identification to avoid fading**  
  High-speed CW (Continuous Wave) identification is not a method for establishing EME contacts. While CW can be used in EME, the focus should be on synchronized transmissions rather than just identification to avoid fading.

### Summary:
For successful EME communication, stations must coordinate their transmissions to ensure they are both active at the same time, making **time-synchronous transmissions** the most effective method.