769.5375 is still silent here in Highland Park on a Pro-95.
The Pro-95 is not made for 700MHz; I am surprised it allows you to input that frequency (maybe it could be unlocked like the Pro-96 bands could be expanded?) but in any event you cannot count on its performance on that band.
I believe opensky will take place. However just like many towns like Piscataway that has recently implimented P25 radio interfaces. I think some towns that are on the EDACS format will start their own talkgroups like Piscataway and Dunellen did. Maybe combining one large P25 talkgroups. This is just valid speculation. No confirmations, though I have heard of this being a valid idea. Plus it is cheaper to implement since encryption usually costs nothing to enable and maintain.
Sure, it's an opinion and "there's no such thing as a bad opinion," but you seem to misunderstand the technology at hand and its cost. To "start their own talkgroups like Piscataway" would take millions of dollars for repeaters, site controller, and subscriber units, and possibly dispatch center upgrades as well. Spectrum would have to be found and licensed.
Piscataway upgraded their trunked system from a Motorola-type to a P25-type (they were never regularly on the County EDACS), which is much more straight-forward and less expensive (depending upon exactly how the Motorola system and its subscriber units evolved) than building a new system. For a better idea of the work involved to build a new system, study Woodbridge. They have spent years building it out and trying to find available, useful, reliable frequencies on which to operate.
"Starting their own talkgroups" (as opposed to using excess capacity like Dunellen has done on Piscataway's new system)
isn't like programming a scanner, where you just put in some different frequencies and TGIDs and, presto, there's a spanking new system ready to go.
Yes it is possible, though it is
very highly unlikely that any municipality which has jumped onto the county's trunked system is going to leave it and construct their own trunked system, and as unlikely that any town currently on conventional is going to build their own new trunked system. It is more likely that legacy trunked systems will be partially tied together at the back end, and possible for them to be consolidated as upgrades/ transitions occur. And if the UHF-T vacation mandate remains, frankly I expect East Brunswick, Edison, Monroe, Piscataway, Sayreville, and Woodbridge trunked users to be rolled onto the county's or the state's 700MHz systems, though that is more speculative and further out on the calendar.
As I requested in the other thread you posted something similar to, please study the technology and clarify the meaning of your statement about towns "starting their own talkgroups" and "one large P25 talkgroups" and what encryption has to do with any of this. As presently written, I'm afraid it is nonsensical; a better discussion could be had if we understand what you mean (talkgroup versus system, new system versus existing or upgraded system, and what encryption has to do with any of the above).