it is quite useful. As the radios are weapons you can do the
Player hasWeapon "sebprc25" check
and if is true
showRadio true; EnableRadio true
if it is false
showRadio false; EnableRadio false
I used it in my mission "Seals in Nam Episode 4". You can only issue Radio commands if you are to not to far away from the RTO and the RTO is alive. It is quite hard to find out in a heavy firefight that you can not call for artillery because your RTO is out of action, or you can not call for extraction because you forget to take a radio with you. The good thing is, if you "acquire" a enemy radio, you can also use it.
If you want to try it, down the mission under:http://www.modify-the-game.com/OFP/Seals_in_Nam_Ep4.zip
If there is more interest, i can send you the mission source code (if you can not dePBO it).