2.4 SKEW PLANAR WHEEL RIGHT HAND CIRCULAR POLARIZATION
They might cost a little more than other antennas; but the performance is worth it. With a skew on the plane and the helical on the ground, you will get great video at a good distance.
The circularly polarized omnidirectional antenna is suitable for use for both transmitter and receiver. It offers coverage in all directions and is combined with a helical at the receiver that provides more coverage than you might need. This skew planar wheel is clockwise circularly polarized.