There is a mo to the OEM antennas on the bird that is told to have great results. Just bring the OEM antennas to the outside of the bird, and instead of putting the sideways, mount them in front and back.There's no practical modification to the OEM antennas to improve overall reception except they be straight and as low as possible on the quad.
You can replace them and there's many options out there if you look around however this requires some skills and patience.
I'm talking about the wifi antennas. Normally you loose FPV before RC.Hmm.
Not sure I understand.
Not really any better place for a dipole on a P2 than to be oriented vertically and below the a/c to avoid shadowing by the fuselage.