Police accountability requires transparency, but access to relevant information is frequently hindered by collaborators in government or the police themselves. Fortunately there is one source of info we can take into our own hands: their radios. Police in the United States largely use the digital, trunked radio system “Project 25.” We can listen in to this using spare computers, a few Software Defined Radios (SDRs), and open source software. Even better, we can go far beyond what very simple broadcastify-style dispatch streams offer, like having our own archives of radio traffic. Based on an actual system that sees real-world use, this talk will cover how to set up your very own DIY police scanner. Ansible playbooks and supporting scripts to streamline the process will be released, and practical tips and lessons for real-world applications of such a system will be covered.