All sites count. A simulcast counts a s single site, just like an stand alone. There are some TG's that are literally locked down to one site only, some TG's that are locked down to a "region", or "zone", and some that can be used on every site systemwide. You can also lock down areas radios can be active in. Like say on an Fire Department, if they wanted to, they can lock certain RID's to not work outside a specific "Region" or "Zone". Lets say you want the higher ranking guys to know whats going on even if they are down in Indy for some reason, but you do not need E-1 B, C, and D if they have a 4th radio to be able to access every site systemwide. You can lock those other radios down to only the immediate mutual aid area, and if they ran E-1 down to Indy for the IFFIA convention, only the A radio would be able to access the SAFE-T from Indy. Yes the system is set up so everyone can help everyone else out etc... BUT: You don't need every TG in every radio to be dragging data/TG's to every single site they can affiliate with systemwide. That is what the mutual aids are all for. Lets use the IFFIA as an example. There are at least twenty local IN FD's represented there yearly, plus INDHS/EMA folks. If every single radio in every single unit, plus the extra HT's were all on, and accessing every TG they could, there would be no way you could every hope to use the IGC-North site on SAFE-T for ISP, INDOT, INDOC, or anyone else as the limited pathways would be completely blocked up with traffic, and so many busies would be logged, IPSC would literally sweat bullets.
