I overlooked the requirement of the radio, thank you very much MulleDk19

I think the command you are looking for is:

player groupChat (str(copyFromClipboard));

which will print the string representation of the clipboard.

I tested running:

copyToClipboard "AnyTextHereToCopy"
player groupChat (str(copyFromClipboard));

and it printed ""AnyTextHereToCopy"" in my chat. Hope this helps.