Conventional they most likley lock the codeplug, simple programming, no ids, no scan, primary talkgroup and or primary event. If anything if scan was enabled it would have primary fire, ems nothing more nothing less no fancy add on channels.
Trunked same concept, primary only with primary fire or ems scan possibly enabled or disabled. Depends. Code plug locked and radio DOES affiliate with its own I'd on system and can be killed anytime in both type of systems. Rx only on talkgroups but registering with system. Along with ours I have seen others and it isn't anything spectacular other then the radio receives basic traffic and the enc traffic and sits in a news room, typically large entity who pays a subscriber fee to listen in or other costs associated. Some get lucky and one is loaned over no cost but most sign life sway and understand at any moment the radio can go dead.
Some may have a admin tech check these devices at anytime and if tempering is found they'll be removed from all of them who have one. Has happened before. Over all it isn't a mass codeplug with state, city, county, tacs, interops next door etc. Basic at best rx only and watched by the system.