The present disclosure provides a device for providing connectivity to a balloon network. The device may include a sealed vessel partially filled with a liquid. The device may also include a floating base that is comprised of a material that is positively buoyant in the liquid. The device may also include an antenna coupled to the floating base. The antenna may be configured to receive and emit radiation. The antenna and the floating base may be positioned within the sealed vessel, and the floating base may be configured to position the antenna such that the antenna emits an emission pattern that is substantially perpendicular to a surface of the liquid.