Have you installed an SWP/Power sensor?? That was not included in the sBitx DE V1 radio.? You would need to build/buy a Stockton bridge and an ATTiny85 and wire them in.? Ashhar Farhan did say there would be a manual calibration method published for us DE owners that do not want to add the sensor.? I have not seen the instructions as of today.
73
Evan
AC9TU