Only two that are capable of reliably decoding Dubuque's simulcast system; Uniden SDS100 & SDS200, price $700 Digital P25 Phase II Scanners (scannermaster.com)
Now the really bad news if radio reference is correct Dubuque PD and county sheriff dispatch channels are encrypted which means no scanner is capable of receiving. Fire looks in the clear.
I was out in Dubuque a few weeks ago for lunch at 7 Hills Brewing. Amazing food and beer. Their pd appeared encrypted. You can still receive IL State Police, IA State Police, and WISCOM as well as local fire and EMS. I could using my 325P2 in my car.