I ordered two Kerlinks and actually got two separate versions: one that is factory calibrated and one that is not.
As far as I know there are 3 type of Kerlink IOT 868 MHz Stations: the 20 dBm with no calibration data, the 27 dBm with no calibration data and the 27 dBm with calibration data. Also there seem to be different versions of LORABOARD_HWVERSION around, pre-5, 5 and post-5.
Next, there are the 915 and 923 MHz versions. So yes, lots of versions of there 