Thanks for the information. I've been able to figure out some of the Meriden codes by listening to the FD and PD at the same time. The FD sometimes strings codes together which makes it difficult. For example, 9-5 means off radio. Sometimes they'll say "9-5 at station", easy enough. Other times they'll say something like "9-5, 3-0" or "9-5, 3-2".