12 bucks was a good deal . I would have gotten one for that price.
I have an older SDR but it doesn't have the SMA connector - has a different smaller one - but wasn't too much problem because I just removed the supplied antenna and used the coax on there to make my own adapter.
I recently got an HF SDR kit . Got it all put together except for the last two connnections - tiny wires from that were wound around a ferrite about the size of a hair that needed to be soldered onto two pins of a surface mount chip that were so close together . I tried everything in my resources - doubled magnifying glasses but just could not get it . Even have a very fine pointed solder iron but my magnifiers were so close I couldn't get the solder iron in there and hold the wire at the same time. So I just shipped it off to a friend who has better skills and a nice stereo magnifying scope.
Classic 150 , 20 Kyocera 135watt , 12s Soneil 2v 540amp lead crystal for 24v pack , Outback 3524 inverter
Classic 150 ,5s 135 watt Kyocero , 16s Calb 100AH LiFePO4 , Outback VFX 3648 inverter
Midnite KID MPPT 24 DC in to 12 volt AGM batterie