The following has not been 100% confirmed:
- It "appears" there is a tiny RF Switch chip (not a splitter) that feeds the two antenna's on the board.
If the above is the actual case, then the AR Drone 1 actively switches back and forth between its two antennas.
The orange arrow is the common RF feed point.
An External Antenna Mod could be one of the following:
- * Two External Antenna's. Cut into the two RF feed traces coming out of the tiny RF Switch chip
* One External Antenna. Cut into the single RF feed trace going in to the tiny RF Switch chip (shown with an orange arrow). The tiny RF switch chip must be removed.