*Question G2A08:
What is the recommended way to break into a phone contact?*  

*Correct Answer is  B: Say your call sign once*  

### AI Response: (may contain errors)  

To break into a phone contact, the recommended way is to:

**Correct Answer: Say your call sign once.**

### Explanation:

1. **Why the correct answer is correct:**
   - Saying your call sign once is the standard and most effective way to identify yourself when trying to break into a conversation. It clearly indicates your presence and intent to communicate without interrupting the ongoing exchange excessively.

2. **Why the other choices are incorrect:**
   - **A: Say “QRZ” several times, followed by your call sign**  
     - This is not recommended because "QRZ" is typically used by the station that is calling for any station to respond. Repeating it several times can be seen as disruptive and may not effectively convey your intent.
   
   - **C: Say “Breaker Breaker”**  
     - This phrase is more commonly associated with CB (Citizens Band) radio and is not standard practice in amateur radio. It may confuse operators who are not familiar with CB terminology.
   
   - **D: Say “CQ” followed by the call sign of either station**  
     - "CQ" is a general call to all stations and is used to initiate a contact. It is not appropriate for breaking into an existing conversation, as it implies you are calling for a new contact rather than joining an ongoing one.

### Rules of Thumb:
- Always identify yourself clearly and concisely.
- Use your call sign to ensure you are recognized by the other operators.
- Respect ongoing conversations and choose appropriate moments to break in.

By following these guidelines, you can effectively communicate in amateur radio without causing confusion or disruption.