Radio ID's specify a particular radio. Let's say that dispatch calls a medic unit. If the medic answers on a handheld radio, the radio ID will be different than the mobile radio in the medic unit. Often, there may be 4 handheld radios assigned to each piece of fire apparatus. Each one has a different radio ID. It's that way everywhere, not just in Nebraska. I've seen the same thing here in Baltimore County MD. If a police officer is assigned to the desk is away from it uses a handheld radio, the radio ID will not match that of the precinct.