Abstract: A system with a containment assembly formed by containment panels in an array about an interior of the assembly, and a ventilation apparatus for permitting passive air movement and producing active air movement through the interior. The ventilation apparatus may include an active air movement structure to produce active air movement into the interior. The active air movement structure may include at least one air entry opening located on the containment assembly toward the first end, at least one air exit opening located on the containment assembly toward the second end, and an air movement assembly positioned with respect to the containment assembly to create air movement in the interior of the containment assembly. Embodiments of the ventilation apparatus may include a passive air movement structure with at least one ventilation slot in the containment assembly and situated to permit a cross flow of air through the interior.

Abstract: A transmission antenna system may include an elongate upstanding main pole, an antenna support assembly extending upwardly from the main pole, at least one antenna mounted on the antenna support assembly, and a concealment assembly mounted on the antenna support assembly and configured to conceal from view the antenna support assembly and the at least one antenna.