So that I'm up to date and clear on the swap over , what group of 800 meg frequencies is Troop 7 on ? Do they ever swap from one set to the other ? I need to understand this a bit better. We have Aiken and Orangeburg. Before the change, I thought troop 7 was called "Orangeburg ". I need to be on the same page. Thanks.
Troop 7 encompasses Orangeburg, Calhoun, Aiken, Allendale, Barnwell, Bamberg and Hampton Counties. The dispatch and tac talkgroups for SCHP for Troop 7 will be carried on any site (I assume by "group of 800MHz frequencies" that you're referring to "sites") that a radio user tuned to that talkgroup is affiliated with. That's how a multi-site trunked radio system works - with some exceptions, any talkgroup that has a radio "affiliated" with the site be carried by the site at that time. So if you're listening to the Aiken site, you're most likely going to always hear the active SCHP talkgroup for Aiken because it is very likely that there is an SCHP radio tuned to the talkgroup and affiliated with the Aiken site.
Troop 7 is a little tricky in that they have fewer dispatch talkgroups - other troops have 4 dispatch talkgroups, and Troop 7 has either 2 or 3. Most of the time, 2 or more of the SCHP Troop 7 dispatch talkgroups are "patched" or joined together so that radio traffic on either talkgroup is heard on both. So most of the time, it's as if there's only one active dispatch talkgroup for all of Troop 7. They do this because there is usually only one dispatcher working for Troop 7 at a time and that one dispatcher doesn't want multiple channels talking at the same time. The dispatch center for Troop 7 identifies as "Orangeburg."
So, to answer your question more directly, Troop 7 talkgroups are carried on any and all sites with an SCHP radio affiliated to them. They may not always be carried on every site all the time if there isn't a radio affiliated with a particular site. The active talkgroup ID may change as the patch is changed.