*Question E1B11:
[97.15] What does PRB-1 require of state and local regulations affecting amateur radio antenna size and structures?*  

*Correct Answer is  B: Reasonable accommodations of amateur radio must be made*  

### AI Response: (may contain errors)  

PRB-1, or the "Preemption of Local Zoning Regulations," is a policy that encourages local governments to make reasonable accommodations for amateur radio operators regarding antenna size and placement. 

### Correct Answer: B - Reasonable accommodations of amateur radio must be made

- **Explanation**: PRB-1 requires that local regulations should not impose unreasonable restrictions on amateur radio antennas. This means that while local governments can have regulations, they must allow for reasonable accommodations to ensure that amateur radio operators can effectively communicate, especially for emergency purposes.

### Why the Other Choices are Incorrect:

- **A: No limitations may be placed on antenna size or placement**  
  - This is incorrect because PRB-1 does not eliminate all limitations. It allows for reasonable regulations but does not prohibit them entirely.

- **C: Such structures must be permitted when use for emergency communications can be demonstrated**  
  - This is misleading. While emergency communications are important, PRB-1 does not state that permits are conditional on demonstrating emergency use. It focuses on reasonable accommodations for all amateur radio operations.

- **D: Such structures must be permitted if certified by a registered professional engineer**  
  - This is incorrect because PRB-1 does not require certification by a professional engineer for antenna structures. It emphasizes reasonable accommodation rather than specific engineering certifications.

### Summary

PRB-1 aims to balance local zoning laws with the needs of amateur radio operators, ensuring that they can maintain effective communication capabilities without facing unreasonable restrictions. Understanding this balance is crucial for navigating local regulations as an amateur radio operator.