*Question G1B04:
[97.113(c)] Which of the following transmissions is permitted for all amateur stations?*  

*Correct Answer is  C: Occasional retransmission of weather and propagation forecast information from US government stations*  

### AI Response: (may contain errors)  

In this question, we are looking at what types of transmissions are permitted for all amateur radio stations according to FCC rules.

### Correct Answer: C

**Occasional retransmission of weather and propagation forecast information from US government stations** is permitted. This is allowed because it provides valuable information to the amateur radio community, especially for planning and safety purposes. The FCC allows this type of retransmission as long as it is not done on a regular basis and is relevant to amateur radio operations.

### Why the Other Choices are Incorrect:

- **A: Unidentified transmissions of less than 10 seconds duration for test purposes only**  
  This is incorrect because all amateur transmissions must be identified with a call sign, regardless of their duration. The FCC requires identification to ensure accountability and proper use of the amateur bands.

- **B: Automatic retransmission of other amateur signals by any amateur station**  
  This is incorrect because automatic retransmission is generally not allowed unless specific conditions are met, such as in the case of repeaters or digipeaters, which have their own set of rules and requirements.

- **D: Encrypted messages, if not intended to facilitate a criminal act**  
  This is incorrect because encryption is generally prohibited in amateur radio, except for specific cases like satellite control links. The purpose of amateur radio is to be open and accessible, and encryption goes against this principle.

### Key Rule:

- **FCC Rule 97.113(c)**: This rule outlines the types of communications that are prohibited in amateur radio, including encrypted messages and unidentified transmissions. It also specifies exceptions, such as the retransmission of certain government broadcasts.

Understanding these rules helps ensure that amateur radio operators comply with regulations and maintain the integrity of the amateur radio service.