Get high gain antenna kits to improve indoor coverage for this device here: https://wdi.rfwel.com/wireless-devic...atlas-m1-.html
If you already have the antennas/ cables and simply need the pigtail to allow the AT&T Nighthawk to mate with the cables you can use this pigtail: PIGMR1100
If you already have the antennas/ cables and simply need the pigtail to allow the AT&T Nighthawk to mate with the cables you can use this pigtail: PIGMR1100