 The old transmission packet format, as it continues to be used in the 1M PHY and 2M PHY modes, has been named "Uncoded" in Bluetooth 5.The intermediate "LE Coded" S=2 mode allows for a 500 kBit data rate in the payload which is both beneficial for shorter latencies as well lower power consumption as the burst time itself is shorter.Seikimatsu Leader den Takeshi!