The big problem with Phase II (at least to me) it that is seems to make encryption relatively easy and that could be temping a lot of police chiefs and sheriffs.
Gosh, I really was not referring to Phase I systems converting to Phase II systems ( or did I write that?). No what I was referring to were smaller cities and counties that are converting from older analog systems to new digital Phase II TDMA and how temping is was to encrypted radio traffic. Yes I know Phase I already has that capability but thanks for pointing that out. Sorry I did not make that clearer.Whether a system is Phase I or Phase II has nothing to do with encryption. All Phase II adds is the ability to use TDMA to double the amount of traffic your system can carry.
Once the voice is P25 whether it's an old 3600baud system, P25 Phase I or P25 Phase II system, it's trivial to encrypt.
I am thinking more along the lines of places like Pittsylvania and Spotsylvania Counties in Virginia which are making or considering making the jump to Phase II TDMA. I don’t know about Pittsylvania but Spotsylvania is definitely thinking about the “E” word. Anyways for a while there is was also said that places such as these were too small in size and people for a Phase II TDMA System however apparently that is no longer the case.I am not sure it is any easier to encrypt Phase II than it is to do Phase I. I believe the reason a lot of smaller localities are now going Phase II is they have put off upgrading their radio systems as long as they can and now have to do something. If you are going to put in a new system now it might as well be Phase II if you have to replace everything anyway. Also it is a way to make a smaller pool of frequencies go further. A lot of the new Phase II systems around here are operating on 8 frequencies or less while the older Phase I systems generally have 20 or more. If you have a legacy Phase I system that the user radios aren't too old it is more cost effective to upgrade and remain Phase I since you can reuse some equipment and you have lots of frequencies already. Encryption isn't really related unless you are having to buy a bunch of new radios. If you do have to then it gives you an opportunity to buy encryption if you didn't have it before. That's why I think you see a lot of the newer systems implementing it.