I had to read your post a few times to understand what you were asking. I don't intend to come off as being rude, but it is a bit hard to understand what questions you ask sometimes. I know you are new to the hobby, but you should try and perhaps word your questions a bit better.
From what I gathered, you are asking if there is any police or ems activity on 400 or 600 MHZ that are not on a trunking system ?
First off, 600 MHZ ....you won't find much there. Forget about it.
Second, 400 MHZ or also known as UHF has a bit of activity of all sorts. Public safety, commercial, ham, etc.
What you will find depends on the area your interested on scanning in. If your in Milwaukee, and as stated many many many times here, you will not hear too much in UHF for public safety as the city is on a 800 MHZ digital trunked system that CAN NOT be heard by any scanner. Perhaps a Milwaukee user can tell you the details on what agencies have switched to it, but the plan is for all public safety users in the city to be on it.
If your in Madison, you will find the city all on 800 MHZ trunked. I think they may still use the old UHF paging freq for fire station alerting .
What you need to do is this...
1. Research the database before posting. You may find your answer there. If it's not in the database, then RR doesn't know about it, or it's classified. As a previous Motorola technician, I can assure you there are many freq's out there that the public doesn't know about, and for good reason. Those channels you don't want to be caught listening to....seriously.
Again as a previous Motorola tech, I can assure you RR is probably the best site on the net for scanner freq's. Us techs even used them for info. Normally radio techs can't divulge information like that. If I was asked, I would refer them to RR as it's normally already on here and in public forum and keeps me out of trouble.
2. If you need to post to have a question answered, tell us where your scanning from by putting it in your profile. If you refuse to do that, at least tell us in the posting where your located, a county or city would be nice. Asking us for a UHF freq in Wisconsin for "cop" action is pretty generic. It's a big state and UHF doesn't travel too far. We need to know where your at. if your in Milwaukee, we'd tell you the city is a no go for scanner much anymore. Your only bet is to monitor the nearby counties.
3. Please word your posting on here so we can understand a bit better. RR has some good folks on here who take scanning as a hobby seriously and keep excellent records and including radios techs who have great knowledge of scanner and radio systems. Asking us for UHF frequencies for "cop" action probably puts a lot of users off an pass up your postings. I don't intend to come off insulting here as I am trying to be helpful. Personally, I can't stand it when forum users on....well...any forum become grammar and spelling cops. My take is, as long as we can understand what your saying, then ...meh. Big deal. However, I have had some trouble trying to understand some of your previous questions. So please, try to word them a but clearer, you my find more users willing to help you
There are many reasons why areas will huddle on VHF, or UHF or even 800. Normally the rules for trunking systems are, metro area with a population of 500,000 people. That is the target RF engineers look for before considering a trunked radio system. The population base has to be great enough to support the upkeep on the system. Which, is a big job as each radio has to be setup individually for system security reasons. Normally if an area has a trunk system, they have their own radio shop. Not all do, but that's a general rule of thumb.
I can't vouch for areas too far North of Madison and Milwaukee as I lived in Madison when I was still in the USA. From the IL border to a line from about LaCrosse to Milwaukee, you find most public safety on VHF, and some on 800 trunked in the city areas.
Again, I don't mean to cut you down or anything, but being your new I wanted to help you understand why we can't sometimes can't give you the answer you want. Most of us started out in scanning by buying our first scanner and being glued to it. I started when I was 12 with my Radio Shack PRO 38. And up until April I built public safety simulcast systems. Scanning got me into the being a vol fire fighter, ems, being a police dispatcher, fire/ems dispatcher and all the way up to building the systems public safety talks on.
73's