1.CW timing is optimized, solved the issue of randomly losing DOT/DASH.
2.T/R switch timing is optimized, faster switching time (t<=53ms).
3.Add ALC meter, display below the TX power meter when TXing
   it's mainly for digi mode tx, to get the good linearity, adjust driving level or Line IN volume to
   make the ALC meter value within 30~90.
   Max level of Line IN should not be more than 600mVp-p, or it will overload the input amplifier.
4.PO meter is optimized, more accurate.
5.Rotate encoder driver is optimized, less losing of steps.
6.ACC LINE OUT is optimized, main volume will not effect its output level anymore.
7.ACC Band Voltage switching output is optimized, solved the issue of wrong voltage for 12m band.
8.TS max digit change from 10k to 100k when pushing the main knob.
9.RIT function added: Press and hold main knob to activate.