To listen to the Milwaukee County Sheriff you will need an APCO25 digital trunktracking scanner. The City of Milwaukee is switching to an OpenSky digital trunking system. Some suburbs operate on the County trunked system their own Motorola trunked systems or regular conventional channels for which a basic police scanner will work.
To monitor the Wisconsin State Patrol and other state agencies a basic police scanner can be used as they operate on VHF radio networks.
To view more information on this county please see the following links: