Debugging 1W transmissions on a Digi XBEE PRO

This describes our (me, Akarsh & Michael) little adventure of trying to figure out why the transmission power from a Digi Xbee PRO module was much lower than expected.

Digi XBee Pro node without the metal can

XBEE PRO SX module hardware

We could identify these ICs on the Xbee PRO module:

  • Silicon Labs EFM32-G230F256G Gecko Cortex-M3 microcontroller
  • Analog Devices ADF7023 FSK/ASK transceiver
  • Qorvo RF5110 GSM power amplifier