Airspy can fuck right off. Or, specifically AirspyUS (the US distributor).
Ordered two Airspy Minis several months ago to play with. While one has indeed been great, the other was DOA.
Contacted them to get an RMA to get a replacement and their replies were well beyond condescending. They swore that a faulty product never leaves their establishment and the problem must be me. Ok, maybe... but I rcvd two units and one was GTG w/o issue and the second was complete toast using same hardware (computers, ant. and such).
After finally convincing them to let me send it in, they refused to issue a call tag for brand new out of box item. Ok, whatever. Then I discover they want me to ship it to a PO box rather than physical location which rules out my normal shipping channels (UPS, FedEX). So bit my lip and sent it USPS.
After a month and a half of no contact, again email to check on status of RMA. The reply I got was laughable. It was as if they had no record of the initial contact, or even RMA and advised they don't recall receiving anything. Tracking shows "delivered", but that is about as much as you can glean from USPS. Started a lost package trace, which has gotten me nowhere. And sadly, I think AirspyUS probably rcvd it, but is so poorly run I doubt they are even aware.
Emailed AirspyUS yet again and the last reply rcvd was basically... "Huh, we'll look into it" then nothing.
Lesson learned I suppose, but I would stay far and away from AirspyUS. Perhaps ordering from a different distributor may help... are there any?
YMMV