In this video I will show you how to make my new circular
polarised antenna “the Celtic Knot” that I have been working on for some time now. It is an omnidirectional antenna but with all the benefits that come from circular polarization making it perfect for FPV on a fast turning quadcopter.
The 3 blade for transmitting and the 4 blade for receiving
Soldering SMA connectors to RG402 coax
Circular polarization: http://en.wikipedia.org/wiki/Circular_polarization