After doing a search on the FCC website, I figured it's one of three radio dealers that operate this LTR system in Sandusky County.
They are Futronics, Sound Systems Inc, and Rays Electronics Inc.
The FCC database shows 18 possible LTR systems (Service YG) in Sandusky County. Fremont Fire may be on one of these systems.
If you find out anything further, please, pass it along to us.