顺便附上ic-735插头定义
pin1 mic (yellow)
pin2 repeater tone (+ 8/9 volts some models)
pin3 up/down
pin4 n/c (squelch some models )
pin5 ptt(red)
pin6 earth (black)
pin7 mic screen
pin8 n/c (green)(external speaker some models )
pin的定义是 面对发射机上的连接端子 限位缺口朝上
外圈逆时针为pin1-7 中心为pin8