The antenna set that started the revolution and spawned copy after copy. The Bluebeam® Line of Antennas were the first Circularly Polarized antennas made available to FPV pilots way back in 2011.
Cloverleaf (3-Lobe) Skew-Planar Wheel (4-lobe)
Gain: 1.4dbic Gain: 0.92dbic
Axial Ratio: .61 Axial ratio: .54
Polarization: Right Hand Circular (RHCP)