Ok i found this post..
Universal workaround for usage in a preInit function:
{
_x params [["_chan",-1,[0]], ["_noText","true",[""]], ["_noVoice","true",[""]]];
_chan enableChannel [(_noText != "true"), (_noVoice != "true")];
} forEach getArray (missionConfigFile >> "disableChannels");
https://feedback.bistudio.com/T117205
Not sure how this works but i also found it in a wasteland mission file that has channels disabled. but not sure how to implement it im my mission to make it work!?