I ordered a Vilmos ADS-B kit ($91 on Amazon, delivered) and got it running. I decided to drive over to KORG to check out the ground station, the only one in Southeast Texas. Anyway, they look a bit like a mini-cell tower (see photo) and are surrounded by a chain-link, barbed wire fence. The one at KORG has a small generator and an LPG tank, not much to it.
Before I drove overI called the FBO and asked if he knew where the tower was. He just said that the FAA had a tower there and he thought it was an RCO. When I drove up it was unmistakeable and literally right off HWY 87. It's a low altitude station and I got great signal parked next to it