A "terrible idea" that's become the entire selling point of the whole system, the whole idea of spending $20-25/per radio per month, and $50-100/per month per console is so that public service & public safety are able to communicate with each other in times of disaster and not pick up a telephone. Otherwise it's a mish-mosh of terrible ideas with different radio systems amongst public service and public safety agencies. The one thing that continues to get lost is the training and coordination of how to communicate between agencies so it doesn't become a disaster with different priorities.
The entire selling point of the radio system is interoperability, NOT sharing agency-specific TGs. 🙄
A terrible idea is sharing agency-specific TGs with outside agencies.
The great idea was sharing the same radio system statewide.
A better idea would be training radio users how to communicate with other agencies, using countywide Ops TGs, regional Ops or mutual aid TGs, and statewide Ops or mutual aid TGs.
This is NOT a new concept. In the analog days, and still today, if one county had a question for another county the first county did not switch over to the other county's primary dispatch channel. They called the 2nd county on Point-to-Point (155.370Mhz). Mobile units that needed to communicate with outside agencies used LEEN (155.475Mhz). In the fire service multiple fire depts at a scene would use Mutual Aid (154.280Mhz).
Mutual aid and Ops channels are used so that every dept doesn't have to have every other dept's primary and secondary channels programmed in their radios.
Why do you think each county agency in route to the same call is given the same Ops channel assignment? That is so they can communicate and coordinate with each other, without switching to each agency's primary dispatch channel.
Also, FWIW, in Indiana, there are no 'user fees' for any agencies or radios. The state paid for all of the original infrastructure; and the counties just have to buy their own radios. After the original infrastructure was in place, if a county wanted to add additional voice channels to their county's site (due to busy signals) or if they wanted to turn their site into a simulcast cell, then the county would have to fund that. Indiana started the process of their statewide P25 radio system in the late 90s; and if you were involved in public safety shortly after 9/11/2001 you would know federal public safety money started flowing faster than a fire hose. The counties in Indiana didn't have a burden to fund their radio or console purchases, or site upgrades, it was mostly all funded by federal grant money after 9/11.