Sorry, but only an authorized radio can be on the system. P25's are set up so that the instant an radio is put on it, it affiliates, and if its RID is not in the system's data, it is blocked, or even bricked. So to get an radio actively monitoring in trunking mode, even TX disabled, you will have to have it authorized by the System Admins. Otherwise you have to use it in P25 Conventional with TX disabled, but then you won't be able to filter traffic heard by TG etc... And you can't use it for a feed without that capability. So you will have to go to Indianapolis Department of Public Safety; Communications Division, and personally talk to administration. Good luck on that, as even the press does not have actual radios here.