Are they using any peculiar feature of the TinySA? From the photo it seems they're doing normal spectrum monitoring, but for that purpose a SDR dongle would work as well, For rexample the one by rtl-sdr.com. Beside being much cheaper, it can be interfaced easily with also cheap *Pi-like single board computers and operated remotely to cover wide areas. But again I have no idea if the TinySA offers any advantage over a SDR receiver in that context.