Default Data Rate for channels in CFList in region EU868

[wm-eisos]

I have noticed this line which sets the valid range for the channels received in the join accept frame is dr0..dr5 even though one of the channels supports dr6 but then when i try to use dr6 it will report no channels found

newChannel.DrRange.Value = ( DR_5 << 4 ) | DR_0;

[wm-eisos]

According to LoraWAN the channels are assumed to support dr 0 to 5