Today, MetroNet has stopped using the temporary Countywide 2L/2O TGs for major north incidents, and have switched back to the North Cell 2N/2M. For all the North major incidents with Battalions attached (Structure Fires, TC Cut and Rescues), they are now utilizing Zone 22, Tac 2N (Encrypted). The original 2N now shows out of range. It sounds like all the other fire channels and MetroNet South are still in the clear.
This will be a slow transition on the switch over so enjoy it as long as your can. The whole county fire departments will be a 100 percent encrypted soon.