to the USB wires on the row of pins towards the center
of the board. Ground is available on the capacitor
next to it, on the end towards the USB wires.
+
+ TeleBT v4::
+
+ Connect pin 30 on the CPU to ground. Pin 30 is the 6th
+ pin from the right on the top when the unit is oriented
+ such that the SMA is at the top.
endif::telemetrum[]
Once you've located the right pins: