Download the exe from https://github.com/jumbo5566/SRFRS
Step 1: Select the COM
Step 2: Click on Operate, change OPEN to CLOSE
Step 3: In Debug Sent View type: AT+DMOSETGROUP=1,435.1750,435.1750,68,5,68,0
Step 4: Hit Write Custom
Under RX Status, if it returns: +DMOSETGROUP:0 meaning the write is successful
** IMPORTANT **
Make sure to hit CLOSE button at Operate so it will change to OPEN before pull off the cable
Set COS to USB-invert
Table of CTSSS
Table of DCS
