麻煩各位大佬！

啱啱買咗個receiver係futaba FP R604FS 但個接收有5個位！一  ch4/batt 二 ch3 三 ch2 四 ch1
五 DSC！我好想知道這個叫四channel但 第一個已用作電池咪冇咗第4ch! 另外DSC有咩用？ 麻煩各位哥哥幫手解答我！謝謝！

ch4/batt .....可作為第4ch / 外置電源輸入,除非你玩油車要用上外置電源外,玩電車己由 ESC 供電比接收,所以第4ch可以用返呢做4ch

DSC......唔知

DSC 咪馬國明賣廣告果間

DSC: Direct Servo Control --> Transmitter use a wire to link to the RX without turn on RF module, so will not jam the other racer.

In old day, during racing, you are not allowed to turn on your radio during racing. Hence, if you want to setup your car during others are racing, you need this DSC port

完全明白！但如果要用到ch4就要買多條一開二？