TrueRc with there new X-Air antennas have done it again, Greatly improve your signal and range on the DJI FPV HD goggles with the X-Air LHCP antenna upgrade. 
TrueRC did it again with this versatile directional antenna for the DJI FPV HD goggles. Thanks to smart design, you can multiply the range of your system in style. It can be used alone, horizontally, connected to the two top SMA. Or it can be used in pair, flipped vertically and connected to the two SMA on each sides, for maximum video link resilience. This also improves the received picture in the DJI Goggles thanks to less break up pixelating.

Specs

• Bandwidth: 5.1GHz-6.0GHz
• Gain: 10 dBic
• Beam-width*: 120deg
• Beam-width @-3dB**: 68deg.
• Connector: 2x RP-SMA (direct + cable)
• Dimension: 104mm x 41mm x 30mm
• Weight 25g

*Coverage where reception is at least equivalent to an omni.
**Coverage where at least 70% of the max range is obtained.

Included
1 x TrueRC X-Air LHCP Antenna for DJI FPV HD Goggles
Connecting cables.