UbitX ver 4 Audio amlifire and Tx popfix plus S-meter sensor PCB I have ubitX ver3 working well with SSB and Digital mods Just now om Farhan released ver 4 circuit with new transistorised audio amplifire and Tx popfix circuit,and mods in Rf PA, I decided to apply audio amp and popfix mod to my ver 3 pcb,and also want to upgrade software ver 1.08 wirh S-meter and 4line LCD display by KD8CEC So decided to design pcb for this 3 modifications in one,which is easy to fix on ver 3 pcb here is some pictures and all details to connect new small pcb to original ver 3 ubitx Pcb design with sprint layout and will shortly upload all pcb files to FB bitx groups all original Ideas from Om Farhanji and Mr Lee(KD8CEC), I just design pcb to use it Tkanks to both Results popfix working fine no click from speaker S-meter sensor circuit working fine ,s-meter tune with ubitx manager ver 1.081 my setup sample value are as 125 128 130 134 140 158 188 223