When you show up and get your pubs, you'll get a set of the SQ standards and local guidelines that outlines basically everything you say on the radio, including talking with the RSU. When in doubt, <who you're talking to> <who you are> <what you want>
If you already know where you're going to UPT, you could get a copy from one of your bros. A lot of it may not make sense to you, but it's really not all that difficult.