There are a few counties that are not going SAFE-T. Out of those, several have their own P25 trunked systems either now online or coming online soon. Including Marion, Hamilton, and Madison using the Indianapolis Department of Public Safety family of systems, Lake on its own P25 Phase II TRS, Tippecanoe on its own P25, Allen on its own P25, Howard on its own P25, and the ODDBALL Steuben on an OpenSKY, and Vanderburgh on EDACS with its own P25 in the works, and Warrick has an LTR (expect an upgrade/conversion of that before very long).
It's likely a link and what you're hearing are "virtual talkgroups." That's how I listen to Owen Co. on Safe-T, which is NXDN conventional...and I've heard ENC, though I don't have a NXDN radio to try to decode it with and verify this.I receive Warrick on the Safe-T system.
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However they're doing it, I'm just glad I can listen to them. Don't ever seem to hear much on the Fire and EMS TGs but their Sheriff Dispatch is extremely active. I do get Fire/EMS tone-outs etc on their conventional repeaters.Owen simulcasts
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I don't believe Lake County will migrate to Safe-T as they just spent $10 mil on their system (Other than a few isolated agencies such as Cedar Lake and Schererville)
The Lake County TGs on SAFE-T are for backup in case something crashes on their P25 system, and for interop with state agencies/surrounding area SAFE-T users. Lake County radios have both systems programmed, and will most likely be getting updated soon to reflect the changes to the SAFE-T system. Same with all other agencies that have their own systems for primary comms. Only Clarke is the reverse, with SAFE-T as primary, and their own P25 as backup. LC is a similar setup to how we run here in INDY area. We use the IDPS systems as primary, but can, and do access SAFE-T when needed, and ISP and the other SAFE-T users around us also have the IDPS systems in their radios and flip over to work with us when needed.
I know in the past I would occasionally hear towns in Lake County use the SAFE-T system every so often, when all the towns were all VHF. However since Lake County has moved to their own P25 system I have yet to hear them use SAFE-T at all anymore.