I suspect what you called a female connector on the back of your TX is the old Futaba buddy cord connector which may date your radio back pretty far I may have missed something but I did not see a picture of the face of your tx to be able to tell exactly what it is.

OK snipedoggy lets have a heart to heart talk now! I could not agree with what Bill has said more. First that airplane has an engine to large (flyable by a talented pilot but a complete disaster for some needing a real trainer). That Cub (any real cub model) are NOT trainers and never should be used for primary trainers. Your airplane could be made ready for flight by an experienced modeler in just a few evenings but what I fear most is you might just try to fly it without getting an experienced instructor to not only do the initial test(s) flight to get the airplane adjusted and trimmed up properly but also set you up with a trainer cord and start teaching you. If not and you go it alone the airplane is not going to live long.

Park the Cub and get involved with a local Mentor and get a real trainer also simulators are a bit help to new pilots.

John