Ham Radio → 500-512mhz band usage

Any of you folks know what all goes on in the frequency band 500 thru 512 MHz?

Land mobile, fixed services and UHF channels 14-20.

In my area, they are rolling out P25 systems there.

470-512mhz are in the lower uhf tv band. I guess I should have known this.
I imagine now it will see some white space use in rural areas where it isn't used for TV

Ahh the good old FCC, they are still trying to pack the TV station's in even more, yet allocating 2way on TV channels. Bottom line in an inversion, who do you think will win? The megawatt Digital I blanket everything TV transmitter or a wimpy 200W P25 box? I know where I'm placing my bets..

Pretty soon white space broadband will be polluting that spectrum.

Specifically, that's TV channel 19 in 500-506 MHz, and 20 in 506-512 MHz. In major urban centers, the FCC reallocated two specific TV channels per city (Los Angeles, Chicago, NYC, etc.) in that range of TV channels 14-20 (470-512 MHz) to Land Mobile about 35 years ago. These were the white space channels that couldn't be used for TV in that market.