This is a new development for FPV antennas. It’s a 2.75 turns helix, the turns are more closely spaced than a conventional helix, and it uses a parasitic disk to achieve higher gain (9.3dBi) and better axial ratio compared to a regular helix.

The result is a very compact moderately directional antenna with very good efficiency, and same gain as a 3 turns conventional helix. The total length is less than half that of a comparable 3 turns helix, which is slightly more than a linear patch antenna which shines if attached directly to your FPV goggles. The ease of aiming this is unbelievable it feels almost as an omni when flying your course nearby and it becomes slightly directional with very wide beam width when going far. We have taking our racing quad to 3-4km with a 200mw VTX and this antenna.

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