walkera devo 7e antenna mod -add main and second antenna base

small design for R/C fans who have a devo 7e ,with this small thing ,you can make your devo 7e have two antennas , one is the main one ,the second antenna is for the added A7105 module. (my mod is add a A7105 ,you can add others one which deviationTX supports modules ).
I have uploaded freecad file ,feel free to make the design better!