*Question G1B05:
[97.111((5)(b)] Which of the following one-way transmissions are permitted?*  

*Correct Answer is  B: Transmissions to assist with learning the International Morse code*  

### AI Response: (may contain errors)  

In the context of amateur radio regulations, one-way transmissions are generally restricted, but there are specific exceptions where they are permitted. Let's break down the choices:

1. **Correct Answer: Transmissions to assist with learning the International Morse code (Choice B)**  
   - The FCC allows one-way transmissions specifically for the purpose of assisting individuals in learning the International Morse code. This is an educational activity that aligns with the amateur radio service's purpose of advancing skills in the radio art.

2. **Why the other choices are incorrect:**

   - **Unidentified test transmissions of less than 10 seconds in duration (Choice A)**  
     - Even though the transmission is brief, FCC rules require that all transmissions be identified with a call sign. Unidentified transmissions, regardless of duration, are not permitted.

   - **Regular transmissions offering equipment for sale, if intended for amateur radio use (Choice C)**  
     - The FCC prohibits using amateur radio frequencies for commercial purposes, including regular transmissions offering equipment for sale. This would violate the non-commercial nature of the amateur radio service.

3. **Useful Rule of Thumb:**
   - Always ensure that transmissions are identified and serve a purpose consistent with the amateur radio service's goals, such as education, experimentation, and advancing technical skills. Commercial activities and unidentified transmissions are generally not allowed.

Understanding these rules helps ensure compliance with FCC regulations and the proper use of amateur radio privileges.