Hi Bobby,
The first 3 are photos of one of my SMA modded Gotenna Mesh units. The last 6 images I pulled from online someplace and are what I used as a guide in my mod. Ignore the contact that is marked green. Solder the center wire of your mini coax across C50 (marked in red) to bypass it. Alternatively you can remove C50 and then bridge the gap with solder. You will also want to sever the circuit board trace to the internal antenna. The outer sheath of the coax should be soldered to the ground plane as indicated in the photo below.
Hope this helps. Good luck on your modding!
Jim - KH2SR
