Is there an easy way to change Thread transmit power?

[felixheimes]

Is it possible to reduce the KW41z transmit power in software?  I would like to test a large thread network in mesh configuration in a room that is  ~75 feet-by-75 feet.  In this size of room, nodes on opposite ends are in range.  There is no easy way to test a true mesh unless I have a really large space.

Is there an easy way to reduce wireless range via a software power setting?

The FRDM-KW41Z users guide says "Programmable output power from -30 dBm to +3.5 dBm...".  Can this be accomplished with software or does it require circuit modifications?  I could not find any documentation on this.

Any other suggestions?

[Sebastian_Del_Rio]

Hello Felix, I hope you're doing well,

To change the transmission power for your radio could you please try using the PhyPlmeSetPwrLevelRequest function included in the PHY.h library? This function is first used to set the default power level for the transmitter, and can be used again to modify said power value.

Best regards,

Sebastian