I can't answer the question accurately, because of geography. However, the correct color code is needed unless monitor/promiscuous mode is turned on for both time slots. If promiscuous mode is on it will show CC, TS, and TG which you can then use to update the memory channel in your radio. I'm assuming the Public Safety Service is not encrypted. My post is a general answer to using a 878 at a specific location and Public Safety Service agency so results might vary from my expectation.