Sounds as if they are using Radio Link's UHF community systems - possibly WPIJ432 - because that particular "group", using the name as listed and spelled by Stateboy, is not in the FCC database at the FCC server. Also, 155.1600 is licenced to The State of Wisconsin for 10,000 mobile units under KO-2099, so whatever the group is doing, it "probably" has State backing... (? - opinion based solely upon available data.)
KO-2099 is part of the Wisconsin State Patrol system for MANY mobile statewide frequencies...
Now ya got me curious too... LOL...