From the Github:

Rayhunter has been built and tested for the Orbic RC400L mobile hotspot. It may work on other orbics and other linux/qualcom devices, but this is the only one we have tested on.

Still very cool, but very, very limited options for using it.

On the plus side, it at least seems like a relatively inexpensive option, only $19 on Amazon.

To be clear, I'm only linking to it on Amazon because it is sold out from the manufacturer itself. Due to being sold out, I assume, Orbic doesn't even list a price for it.

Another important note from the Github (emphasis not mine):

THIS CODE IS A PROOF OF CONCEPT AND SHOULD NOT BE RELIED UPON IN HIGH RISK SITUATIONS!