Hi Animal!
Yup, it's a Pi 3B (You seen how short supply is for these now?)with the RSP1A hanging off it and it's running the Spyserver software that Prog (the main programmer for SDR#) wrote.
I like the RSP1A although it lacks coverage above 260MHz and there's a gap from 30-60MHz as well.
Keep in mind that Airspy has a good discount on its products right after Thanksgiving - I intend to pick up an Airspy R2 for the 20 odd MHz to 2GHz coverage - I understand it can search the entire MilAir band in two and a half seconds.
And you can pick up a HF+ Discovery for about $130 when they have that sale. Get in there, my son!
Lee