REVISION 9/23/2020 - 1 hour laterThe solution below failed. A half amp power supply does not cut it, I now have a 5A power supply I used for an old router that seems to power it just fine (on TX side). That said, I'm checking periodically to make sure something is not getting too hot. It is more stable now, no intermittent operation.REVISION 9/23/2020So, reading for another similar product, I tried putting a power supply on BOTH ends, it now works. I had tried to move the power supply from TX toSee full review