Where do you get these weekly updates? Two weeks ago, Survival Flight opened up a new heli base at St. Mary's Hospital in Russellville and I've been trying to find the frequency.
Some people search the FCC ULS database themselves.
Some people use the FCC data here on RadioReference. You can search each county and sort the listings by grant date. That shows the newest ones first.
Some people look at the weekly grants and applications on Quick Scanner Links.