You should carry a copy of Indiana Code 35-44-3-12 with you in your car, turck, anywhere you operate a mobile. If you are operating a ham ht you should carry a copy with you in your wallet. New Police Officers are not aware of this law.Carrying this with you could keep you on the legal side of the law and keep you from going to jail.
So if the officers are unaware that scanners are illegal, how is carrying a copy of the law that outlaws them, that I'm producing for him to go and verify going to help me not get arrested? If he doesn't know about the law then he doesn't know it's illegal.
Even if the intentions are good, is saying I'm smarter than you going to help things? The example you give, without links callsigns or names, describes the actions of an officer that arrested someone, without any cause to show it was a police radio (by your account), if someone is that set on arresting you, even when it can and did mean his job, is a piece of paper in my glove box really going to stop him? Mind you he has a whole book full of the criminal code in his car. Or is going to take a judge dismissing the criminal case? Know your rights, keep your mouth shut, don't escalate things in the field, win the case in court, and when there is wrongful arrest and/or selective prosecution, file a lawsuit. Then again, I don't blare my radios loud enough for people outside my vehicle to hear them( which seemed to be the case in your example and the cell phone app case in Muncie), and I use ipod style headphones in crowded areas, so I look just like everyone that's neck deep into their phone. I know the law, and don't make a big deal about it, if confronted I'd be seeking to de-escalate the situation, and I don't see how my having a copy of the law is going to assist in that at all. Now calling up and talking with the higher ups in the department after the fact, about proper education, sure I see that helping. Taking things to court and winning, I see that helping in the long term. Playing lawyer in the field, I see making things worse.