The old technology referred to in this article, primarily referenced the ARC4000 switch, which hasn't been (officially) supported by Motorola for several years. The followers on the PBRICS TRS discussions know that the ARC4000 supported the 9 - VHF and 3 - 800 sites owned by the PBRPC in addition to the two city of Odessa owned sites. The 800 MHz PBRPC owned sites are at Notrees, Gardendale, and SE Midland county.
Odessa wanted the PBRPC to pay several hundred thousand annually for the privilege of connecting to the new switch. As the PBRPC relies entirely on Homeland Security grants to build and sustain their 12 sites, this was not an option. In essence, the PBRPC would be subsidizing the maintenance of the new Odessa switch and console equipment. Even though those three PBRPC-owned sites significantly improved the coverage *outside of the Odessa city limits*, Odessa remained adamant that the PBRPC ante' up. So much for level 5 interoperability, we can never seem to quite get on the same page as the Austin area managed to do. (
https://www.dhs.gov/sites/default/files/publications/interoperability_continuum_brochure_2.pdf)
We will have the capability, but typically, it is difficult to get the end user to manually change zones (systems) as they leave their jurisdictional coverage area (particularly when they are in pursuit mode).
Enter the city of Austin GATTRS) which does not charge the outlying entities to connect their infrastructure. If you haven't already, check out the (mostly VHF) sites that connect to GATTRS. Particularly the MRGDC, STDC, and Llano, Burnet, Blanco counties. Only related costs to the PBRPC will be for subscriber template approval, any direct manpower costs incurred at hourly rate by GATTRS. This makes it a no-brainer.
As it sits now, the plan is to connect the PBRPC sites to GATTRS. This complies with a long term goal identified in 2007 of having a statewide TRS. This move will be in phases, grant funds permitting, beginning in April 2017. First phase will be the sites generally South of IH20.
The upside is that seamless roaming will be available to users that have reprogrammed to GATTRS (13E). Coverage depending upon subscriber radio (dual band) capability. The downside is that portable radio coverage for the 800 MHz users will suffer, most notably DPS, UTPB and ECSO. This has been openly discussed, but it does not appear to be an issue with the decision makers. The PBRPC TRS was intended for regional *mobile* coverage. It should be noted that *some* entities regularly using the PBRPC-owned 800 MHz sites pay a user fee to Odessa.
There is lot of duplication of infrastructure. Three public safety switches are in play in our region: Midland, Odessa, and regional/statewide. And it is not fiscally viable to connect them. Technically it can, but several features won't (at present) cross over when it involves disparate vendors.
Usual disclaimers apply: My observations, my opinions. No one else's.