It's a great idea but is it legal to operate a personal Stingray?
It would also need permission from the licensed spectrum holder, that could be harder to get.
But yes, completely legit with the right paperwork.
[1] The FCC has been pretty engaged in understanding the impacts of SDRs because of their potential for abuse (as one attendee called it, "The Drones of spectrum." As an amateur (AI6ZR) and someone in industry I've been helping as an SME to explain some of this stuff to their less technical staff.