*Question T2C11:
What is meant by “check” in a radiogram header?*  

*Correct Answer is  A: The number of words or word equivalents in the text portion of the message*  

### AI Response: (may contain errors)  

In the context of a radiogram header, the term "check" refers to a specific component of the message format.

1. **Correct Answer Explanation:**
   - The correct answer is **A: The number of words or word equivalents in the text portion of the message**. 
   - In radiogram communication, the "check" is used to indicate the total count of words or word equivalents in the message. This helps the receiving station verify that the entire message has been received correctly. If the number of words received matches the "check," it confirms that the message is complete.

2. **Incorrect Answer Explanations:**
   - **B: The call sign of the originating station**: This is incorrect because the call sign is typically included in the header but is not referred to as the "check." The call sign identifies the station that sent the message.
   - **C: A list of stations that have relayed the message**: This is also incorrect. While a message may include information about relaying stations, this is not what the "check" refers to. The "check" specifically counts the words in the message.
   - **D: A box on the message form that indicates that the message was received and/or relayed**: This is incorrect as well. While there may be a section on the form for acknowledgments, the "check" does not serve this purpose. It strictly counts the words in the message.

3. **Useful Rules of Thumb:**
   - When preparing a radiogram, always count the words carefully, as the "check" is crucial for ensuring message integrity.
   - Remember that "word equivalents" can include punctuation and certain abbreviations, so be familiar with how to count these in your messages.

By understanding the role of the "check" in a radiogram, you can ensure accurate communication in amateur radio operations.