They’re sticking with VHF, the “APD Ch. 2” animal control repeater is running mixed mode, and the PD uses it for tactical comms. (whatever that’s worth)
They dumped Lawton Comms in favor of OneLink in OKC, bought a bunch of APX 4000H’s and APX1500s. Seems like they’ve been having some key management issues. I’ve heard several “my radio says key fail” transmissions on analog. I’m not aware of any dual band radios that they own, but I could be mistaken. Now that the Mangum OKWIN site is up, I can see a linked talk group eventually, but the only interop that would bring would be OHP or OBNDD, since everyone else is just running a conventional system.