Found an eBay seller (Rokland, no affiliation) that sells a bunch of different ALFA branded devices with AR9331 chipsets.
I still don't have testing equipment that I trust to accurately measure power consumption in these ranges. I'll try to provide updates as experimentation progresses.
I have these under testing so far:
- ALFA Tube 2HP
- ALFA AP121U
- ALFA Tube 2H