Why not APPROACH all the time? You should be telling the pilot what type of service he/she is getting - if it is radar, then you IDENTIFY them. If it is procedural, then you do not. Works for me. I know in Australia, the RADAR callsigns are used for aircraft getting a RIS outside controlled airspace but not under RADAR control. APPROACH/DEPARTURES/CENTRE is usually used for all control positions regardless if they have radar or not. And lets face it, Australia has only about 10% radar coverage anyway! Big place this. Cheers,
NFR.