Some embodiments of the present disclosure are directed to an antenna system for an airplane. The antenna system including an antenna system enclosure and a desiccant enclosure within the antenna system enclosure and having desiccant material positioned between an outside air pipe and an inside air pipe, the inside air pipe extending from the desiccant enclosure to open to an interior air volume of at least one component of the antenna system within the antenna system enclosure, the outside air pipe extending from the desiccant enclosure to ambient air outside the antenna system enclosure, and the desiccant material is configured to absorb moisture in the ambient air flowing from the outside air pipe to the inside air pipe through the desiccant enclosure while air pressure is being equalized from outside to inside the antenna system enclosure.