Hey I'm new to the forums, I am trying to create my own mission currently, however I want to use some radio chat in it. Is there anyway to use the radio in Arma 2 like the SecOp's manager does, for example to put the text on the screen and play a selected message from HQ? I really appreciate your help. If there is any way to do this please let me know. Many thanks.

Displaying text is fairly easy, just use the sidechat http://community.bistudio.com/wiki/sideChat

unit1 sideChat "message here";

or

unit1 groupChat "message here";

This in a trigger will display under PAPABEAR:

PAPABEAR=[West,"HQ"]; PAPABEAR SideChat "Hi there";

You can now also define groups as something then have them "talk" under that name, put this in a units init in arma3:

In this example we put this code into a unit called man1:

group1 = group this;
group1 setGroupId ["Mission Command"];

To make "mission command" send a message we put this into a triggers onAct:

man1 sidechat "send a message";