Anything numerically listed as 45 would refer to Lake County. So that could refer to the actual SAFE-T TGID that we might not have listed as its current naming, or a TGID we have not found yet, or an TGID on the Lake County TRS, or an conventional Freq we don't have listed as they do. Many. many TG's etc have changed since the first listings from old codeplugs and subs years ago. In fact: Heads up, there are EVEN MORE changes in store in the very near future for Johnson County's SAFE-T set up as they are repurposing more TG's etc... And yes, all the counties surrounding Lake have access to the Lake TRS (Patches for those without TDMA radios, direct for those that do), as well as each other's TG's. IPSC sets it up this way for mutual aid. Just like every radio in Lake County, also has full access to SAFE-T, and the surrounding counties' TG's. Same way that things are done for SAFE-T to IDPS mutual aid. Same also applies for Tippecanoe, etc...
I can't recall if the Lake County TRS has DDM turned on or not, but I do not think they do.