No, no ID just says RF 22.1
Mediafrog didn't really go in depth with his answer for you, and I know you are truly interested in learning, so maybe I can help. I'm not exactly sure what he's talking about as far as KUVN-LD. I never knew there was an application for an -LD version of it, much less a station licensed at RF-22 here in Houston using those calls. An abbreviated search only pulled up Univision's owned and operated station in Fort Worth. I'll do a more extensive one as time permits.
RF stands for Radio Frequency. Now, I know that sounds odd, a radio frequency omits a video signal? It's true. You see, your television has a tuner inside of it that strips the content out of the radio frequency's carrier wave and displays it on your screen. Satellite works the same way, except the frequencies are out of the range of television tuners and require a special external tuner to receive the signal which is why you need the box and the pizza pan on the side of your house to receive satellite service, whether it be Dish, DirectTV, or the old C-Band and Ku band satellites that used to be prevalent in higher income households.
I rescaned my flat screen and my analog tv with the digital converter box. Neither yield an RF-22 from my location just up 45 from you, mrtejano. Flat screen gets nothing at all, digital converter box shows only KLTJ at virtual channel 22, operating from RF-23. I find no evidence of RF-22 here. Are you certain it's RF-22? RF-21, which is KVQT, meets your description, having .1-.7, and has experienced several recent changes to the subchannel line-up.