I'm wondering if there's any of these WeatherStar 4000 systems in use near Green Bay, Wisconsin. If there are, they would most likely be found in some small towns in northern Brown County, Shawano County, and southern Oconto County.
Here are some possible WeathereStar 4000 locations:
Pulaski, Wisconsin (They had had a Star Jr in 1998, when I lived there, it's possible that they upgraded to the 4000)
Oconto, Wisconsin (I lived here in 1994-1995 when they had a Star III, it's possible that they upgraded to a 4000 or XL.)
Gillett, Wisconsin (Had a Star III when I lived there in 1996-1998, it is possible they upgraded to the 4000 when the III was decommissioned in 2004, since their population is lower than 2,000)
Clintonville, Wisconsin (Formerly had a WeatherStar III, unsure if they upgraded to a 4000 or Jr.)
Bonduel, Wisconsin (I'm unsure about this one...)
Oconto Falls (When I lived here from 1994 to 1996, they had a WeatherStar 4000, it is pssible that they upgraded to an XL.)