Technical Baofeng Pofung UV5R UV82 UV82X - Miklor Information Site, VHF UHF Handheld Radios
A standard single button remote spkr/micr will select Display B (the bottom display) when keyed. There are earpiece/microphones available that incorporate two PTT buttons. The wiring configuration for these is shown below. Shorting X to A will select Disp...