So, what if they have to go outside their district to chase a bad guy? You're saying their radios will not affiliate/login to the other site if it has a stronger control channel?
Yes.
In Hillsborough County's programming, a zone references one site and one site only. A user does not "roam" between sites in a single zone like you'd expect in a multi-site trunking system. Some talkgroups are only contained in one zone - one site and some talkgroups are duplicated in an east and west zone so it will affiliate on the relevant site.
So if you were a deputy and turned on your radio to the zone "Patrol West" and channel "D1" while you were in Plant City, you'd affiliate with the west site because the zone "Patrol West" does not reference the east site at all and "D1" doesn't appear in any other zone.
That being said... the talkgroup "Countywide" for example is in both "Patrol West" and "Patrol East" zones. But, if you are on "Patrol West" - "Countywide" while in Plant City, you're still using the west site. You'd need to flip over to "Patrol East" - "Countywide" to use that talkgroup on the east site.
Same thing with HCFR tacs... Tac 1 is programmed to a zone that only has the east site referenced. The next channel in the zone is Tac 3. So you'd never see Tac 2 affiliate on the east site because Tac 2 is in a zone that has only the west site programmed. The Dispatch talkgroup is in both zones, but the user essentially has to pick east or west.
Why did they decide to do it this way? Dunno. That is a question for the system admin. Nothing new here, it was set up the same way even in EDACS.