I spent some time copying the layout of the rear of the Vortex 250 Pro carbon top plate. This was then mixed with a simple antenna mount resulting in a bolt over item. Stiffens up the frame even further and gives you an antenna mount in a very convenient location.
This is aimed at using the FRSky D4R and X4R range of receivers but will probably fit others. If you do not wish to mount the receiver between the carbon frames then also this mount does not compromise the existing mounting location.
Look out for further upgrades that i am workiing on 🙂