The plan as I have it is to merge P25 and Trbo into a Tetra Product, for release in 2012, at which time Turbo will be discontinued and abandoned as its not true 6.25kc and wont comply with the new 2.5kc standard that all will have to start adhering to. Trbo takes up 12.5kc though it provides 2 voice paths, its not 6.25kc wide.
My question is when will the 440 and 2m bands start talking about making a unified 6.25 kc divisible bandplan and apply it nationwide? They will have to do it so might as well get started talking about it. I know that there are a lot of people with 25/30 kc radios that are not going to care for hearing about this. A good first step is to design the layout in 12.5 kc steps for each band and start planning on at least going to 2.5kc deviation around that time..
