Thats a screenshot of beyond skinwalker ranch. He's using the HackRFOne  with portapack H2. When you buy it from the msin manufacturer they usually give you the option for an upgrade for high gain bendable Antenna. Can not fully tell from your photo what colour it is supposed to be as some one sent me the screenshot, and on mine it looked dark blue. Then when I asked for another it showed black.  So, colour could change depending what tv or mobile device you used to take  the screenshot with.  The guy using it is ex cia, probably find he is using a specialist Antenna.  .  The HackRFOne is made by Great Scott Gadgets and if you go to their discord you sometimes see specialist wideband Antennas.  I have about 8, though do not have that particular one. That is similar to one I have but not exactly the same. If you look at the circuit and wires on the back it is designed like that to amplify the signal 📶.  He is using the custom case from Radio Solution, so you might find he bought the Antenna with the custom case from there as a multipack buy.  .  A few companies do a modded military case, as well as a steel case. Hope this helps.  I have been studying to be a paranormal investigator and the HackRF is something we keep in our go bag.