Using the radio programming software, tone modes are listed as:
None, Tone, T Sql, DCS, D Code, T DCS, D Tone
I was able to program split tones for a number of the local GMRS repeaters using the codes listed, except for one. That repeater has DCS Tx & DCS Rx split tones, which I cannot get to work.
My Icom IC-F6021 (Business Band radio) allows for the programming of DCS split tones and I was able to access the repeater. That radio is my base rig for GMRS repeater communications. I wanted to use the Wouxun KG-UV920P as my mobile rig (it's a better fit for my Jeep since the control head is removable).