I live in Calumet County and have always heard them on 155.040 - NAC 080. I use Pro-Scan software to track what my BCD436 hits and since December 28th I haven't gotten, but 4-5 hits for a second each. When I pull up my iPad app for scanning, I hear Calumet there, but the app doesn't reveal the frequency they are monitoring. I've been looking for the last five days to see if there has been any changes and so far nothing has surfaced. Thanks for the reply.