EMSA is still encrypted full-time in both OKC and Tulsa on OKWIN.
EMSA also primarily operates on OKWIN in both OKC and Tulsa, so what you're hearing on the OKC MPS is actually just a patch of the EMSA talkgroup from OKWIN to the OKC MPS, and it is only active when there is a subscriber unit affiliated with the EMSA OKC Disp talkgroup on the OKC MPS system. It has been mostly in the clear on the OKC MPS system at least since I lived in OKC last year and monitored that system, with a few encrypted voice calls here and there, but if you look, there will be long periods of time on the OKC MPS where nothing comes through on the EMSA OKC Dispatch talkgroup. So you're not always hearing everything unless someone is affiliated with that talkgroup on the OKC MPS.
I also noticed that I wasn't hearing everything cause working overnights covering news, I would often be at a scene with EMSA. And I would hear their dispatch toning out another call on the EMSA radios and my Unication would still be dead silent. And the other station photographer who had an OKC MPS media subscriber unit would not hear anything either, both of us having the EMSA OKC Dispatch talkgroup on the OKC MPS in our scan lists.
I think the point of the patch was for better coverage in the rural spots of Oklahoma, Logan and Canadian county, where EMSA has/had some contracts. Coverage was poor on OKWIN in several parts of those counties. And in certain buildings, but OKC MPS had better coverage in some of those areas.
Hope that information helps.
