In the communications end of it they like the regular army use the SINCGAR radio which is quite a nice piece of equipment. when our intel boys in the Curragh got a hold if it (like anyone that gets em) they put in their own code and apparently it is the most complex and secure in existence at the moment. I'm in comms. Given most of the info on the SINCGAR is restricted I can say nothing more that you yourself could not already find out.
I hope I have been informative and if you have any more questions I will answer them to the best of my ability if I can.
