Which of the following articles deals with community antenna television systems?

The correct answer, Article 820, specifically addresses community antenna television (CATV) systems within the National Electrical Code (NEC). This article outlines the requirements for the installation, maintenance, and safety standards applicable to CATV systems, which are essential for ensuring proper functioning and safety in the distribution of television signals through cable systems.

Article 820 focuses on aspects such as grounding, bonding, and protecting equipment within these systems. It offers guidance on the construction and installation practices necessary to prevent issues such as signal interference and to enhance the safety of both the equipment and users. By establishing these standards, Article 820 ensures that community antenna systems operate effectively while minimizing hazards related to electrical installations.

In contrast, other articles mentioned address different types of communication systems. For instance, Article 800 deals with general communication circuits, Article 810 relates to radio and television equipment, and Article 830 addresses network-powered broadband communications. Each article has its specific focus, which is why Article 820 is the most relevant for community antenna television systems.