I think you're right. Looking through their antennas page shows a lot of similar spherical designs, including the AllSky antenna that's being tested on the same

I think you're right. Looking through their antennas page shows a lot of similar spherical designs, including the AllSky antenna that's being tested on the same balloon as the inflatable one. They look remarkably similar in design: spherical with a moveable transceiver to be able to steer the beam without moving the antenna. https://www.freefallaerospace.com/antennas/ https://www.freefallaerospace.com/antennas/