The copter setup on this test flight was:
2 home-made cloverleaf antennas birdside (2.4G)
2 home-made 5-turn helical antennas on Remote Controller(2.4G)
1 patch antenna (11dbi) for 5.8G
These cloverleaf antennas in combination with the helical ones have brought an enormous improvement in terms of video transmission stability.
Both the cloverleaf and the helical antennas are right hand polarized and are squeezing the very last bit out of this little bird in CE mode.
Pretty amazing for the first try I think, considering there has been no impedance measurements (SWR) yet.
Here are some photos of my modified phantom:
https://www.dropbox.com/sh/0rpbdupus1h91lv/AAB4fLNH2KXvSjIlinMDfp48a?dl=0