This is the perfect directional antenna for your diversity goggle (or groundstation) setup. I have personally flown out over 2.5miles in one direction with 200mW vTx combined with the TrueRC X-Air 5.8GHz aimed in the direction of flight with zero issues and zero breakup (I recommend using a long range control link for this distance. The Crossfire Micro Tx is perfect for this task and can be found here: http://bouldermultirotor.com/product/tbs-crossfire-micro-tx/ )
Heres a description straight from TrueRC’s website:
Our most popular! The X-AIR 5.8 is the next generation crosshair antenna. Featuring state of the art PCB material, there’s no compromise in beam width or gain. Wide coverage and high axial ratio make it perfect for proximity flying, by keeping signal behind bushes and trees. Mount it right on your goggles whether they have top or side SMA connection, the included low-loss semi-flexible extension have them covered.
And the All Important Specs:
- Frequency: 5.8GHz
- Gain: 10 dBic
- Axial Ratio: 1 (perfect)
- Beam-width*: 120deg
- Beam-width @-3dB**: 68deg.
- Connector: SMA male
- Dimension: 2.1″x2.1″x0.6″
- Included 5cm low-loss semi-flexible extension.
*Coverage where reception is at least equivalent to an omni.
**Coverage where at least 70% of the max range is obtained.