This is often one of the most overlooked factors of these complex digital radio systems, the long term operating costs per radio. Like anything, it sometimes doesn't make fiscal sense when you add up the cost over time.
I can't speak for the city of Marietta, but I suspect this is one of the main reasons why the city opted NOT to join the then new Cobb county DTRS for their non-public safety users (BLW, DOT, etc). The long term per radio cost was just too high. So high that the alternative of procuring and using their own VHF Passport system made better economic sense in the long run.
The cities in Floyd county are looking down the same pipe and seeing the same money sucking vacuum cleaner and have to make some tough decisions.
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