V1.4 vs 1.3 Compare?

[jack]

For v1.4, by default, the configuration is on board antenna. The design reserved the external wifi antenna configuration at paste time. If you want to modify the normal v1.4 board to use external wifi antenna, you should:

1. solder a uFL connector
2. change the orientation of capacitor c3/c4

Check this thread for the picture:

New PCB Version? 1.3 ->1.4

Yes, by default the antenna is routed to on board antenna, but we can also solder an U.FL connector and change the orientation of C3/C4(sharing one pad) to U.FL connector. [wifi_ant] Check page 22 of the sch: https://dl.radxa.com/rockpi4/docs/hw/rockpi4/rockpi4_v13_sch_20181112.pdf [ant_sch]