Summary

Replacing the TX module with a JR compatible transmitter requires you to physically de-install the OEM module and antenna. Here's how to regain the use of your OEM TX/RX in a swappable/pluggable module.

You'll need an RP-SMA pigtail that you will solder onto the OEM TX board.

See the Youtube video here: https://youtu.be/yuytut2ZUlg