Correct, ALL radios on an P25 system MUST affiliate with the system to receive information as well as voice. If you try to use an unauthorized radio on the system, even with TX inhibited, it will automatically attempt to affiliate and will be either denied any access thus blocked from the system, or even bricked. Gone are the days when you could just buy an trunking radio, set it to TX Inhibit, program it, and just listen. That is NOT happening on P25 systems.
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