radio call sign

Hey, all. I have a question. I heard on the Phoenix Metro Area Fire Scanners on Broadcastify that Arizona DPS is on the Scene with Gilbert Fire and Gilbert PD. However, Engine 258, Medic 251, Medic 258, Battalion Chief 251, and Ladder 251 were not heard by their usual callsigns on DPS Radio when...

Hey Guys, can anyone provide information about Beverly Hills Police Department callsigns (service identification letters if applicable), radio codes and procedures? I am familiar with LAPD, LASD, CHP, RSO, etc. communications and expect BHPD to be heavily influenced by the two big departments...

Does Anyone have a current list of radio call signs? The wiki doesn't list a lot of the new units I am hearing. For instance, in weber county sheriff talk group. Call sign "1J" (1 Juliet) is not listed (If I had to guess I will assume these are outside jail perimeter patrol/transport units)...